Database Develop

Doesn't charge via wall charger, OK car and usb

Hello Group
My Kaiser has stopped charging via a wall charger. I woke up this morning, and the battery had not charged at all
Some notes
-This problem occurs with 2 different chargers from 2 different outlets
-The device does show the charging indicators (lights and icons) even though it isn't charging
-The device does charge on PC USB port
-The device does charge on the car charger
-No visual bending of the USB pin
I've searched forums, and although I can find references to the opposite issue (wall power OK, USB power or car power NG), I can't seem to find any reference to what I'm seeing. My apologies to the group if I've missed any previous thread regarding this.
Thanks to all who help.

hello, strange problem. have you powered off the phone, pull out battery and try again, see if that might help
lupe

overhaulengines said:
hello, strange problem. have you powered off the phone, pull out battery and try again, see if that might help
lupe
Click to expand...
Click to collapse
Yup, and I have removed and re-inserted the battery.
I thought this also might have to do with a battery going bad, but from what I understand a wall charger gives more power than a usb port, so, again, if that were the case I'd think the opposite would be true
And I did find the thread on some Kaisers are eating up a lot of idle current, but after standby BatteryStatus/HomeScreen PlusPlus says just 1 ma

It sounds like your wall charger has gone bad. It may provide enough current to light up the charge LED, but it certainly doesn't have enough power to charge the battery. Try another wall charger- they all work the same way. I have a number of USB-mini devices and they all interchange for charging.

lsica said:
My Kaiser has stopped charging via a wall charger. I woke up this morning, and the battery had not charged at all
Some notes
-This problem occurs with 2 different chargers from 2 different outlets
-The device does show the charging indicators (lights and icons) even though it isn't charging
-The device does charge on PC USB port
-The device does charge on the car charger
-No visual bending of the USB pin
Click to expand...
Click to collapse
For what it's worth, you are NOT alone! The EXACT same thing has been happening to me on and off now for the past several months. At first, I thought it was the wall charger (I have 3 iGo chargers); however, ALL 3 of them failed to charge. I can understand one them failing, but ALL 3? No way. In my case, the car charger wasn't working either (it's also from iGo).
I ended up having to charge by USB. I eventually thought it was a battery problem, so I bought a new battery.
That worked...until the problem re-appeared again. The bottom line for me right now is that every now and then the wall charging does not work. So it will work fine for some time and then it will not, and then it starts to work again, etc. This erratic behavior happens with both batteries.
The duration of the wall charging working/not working is not fixed, I have found. For example, I have gone a couple of months of it charging fine and then it stops. At other times, it has been as short as a day. In any case, I usually find out about the problem in the morning, when I still see the amber charging light.
I'm convinced it's a Tilt problem.

I've loaded HomeScreenPlus to monitor current draw, and have seen the following:
-One wall charger is showing positive current (negative draw) SOMETIMES, and during those times it does charge the phone. This unit also makes the charge light turn off and on when I jiggle the plugs or cable. Obviously this charger is just broken.
-Another charger does not turn off/on the charge light or current draw when the wire is jiggled, but also never shows a positive current on the phone. This is an IGo charger, and based on previous posts here I'm thinking they just don't supply enough current to charge the phone. in other words, they suck
Any one have recomendations for a replacement wall charger for my Tilt?

i had the same issue with my htc tytn. no charger worked well for more than 5 minutes, until i got an official htc charger from my wifes shadow... now i use it because it works... and she uses the 3rd party one that came with my hermes when i bought it used... it charges her smart phone just fine, i assume beause it requires less juice? I dont know, but get a official htc branded charger... black berries have the same issue after they start getting a little old... probably something to due with wear and tear on resistors of some sort?

Found a charger that works
http://www.radioshack.com/product/index.jsp?productId=2935909
although I expect any ac to usb power adapter that supplies enough current will do. You just need to use your Kaiser/Tilt usb sync cable with it

I got exactly same problem for my Moto Q.
Tried several charger that worked before. Now, none of them works.

Here is the solution.
From www dot heberts dot net/motorola-q-wasnt-charging-via-usb
Start → Settings → Connections → USB to PC. I make “Enable advanced network functionality” on and off, and it works.
szniwawa said:
Tried several charger that worked before. Now, none of them works.
Click to expand...
Click to collapse

My Kaiser
- Charges via AC
- Charges via Doc
- Does not Charge vis USB
- Does not charge via Car Charger
But if I use an "audio Adaptor" which has usbMini Input it will charge whatever i plug in!!
Weird as hell.
Regards
Mo

I bought one of these from fleebay and it works a treat with ANY charger I plug into it.
HTC Multifunction Audio Cable YC A300
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Regards
Mo

Qi plus external battery

Ordered one of these today, big battery plus qi charging, should get it Tuesday, I'll report back with a quick review how it does with the turbo
http://www.amazon.com/dp/B00J409JCM/ref=pe_385040_30332200_TE_item

Was looking to buy the same item. Let us know how it is. Specifically, if really charges ~10,000mAhr worth of battery. Thanks!
mikera67 said:
Ordered one of these today, big battery plus qi charging, should get it Tuesday, I'll report back with a quick review how it does with the turbo
http://www.amazon.com/dp/B00J409JCM/ref=pe_385040_30332200_TE_item
Click to expand...
Click to collapse

{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Got it in the mail yesterday, nice looking packaging, the instructions are a bit strange, think it was translated but not proof read, but not a big deal since there is just one button.
The qi charging is pretty neat, slower than ordinary chargers (all qi chargers are limited) but so much nicer to use the phone without having to plug and unplug device. Both usb ports claim 2.1a, one labeled Samsung, one Apple. Everything seems to work fine, will get better idea today after letting it full charge overnight.

How many times can you can fully charge your phone using this?

Depends if you use the usb or wireless, usb is roughly 90 percent effective, so that works mean only 9,000 mAh, so about twice fully charging the droid, wireless is roughly 70 percent effective, that's about 1 full charge and three quarters charge.
That's on paper, haven't fully tested yet, doubt I'll ever will, like knowing I have a fully charged device ready to go. I just charged my nexus 7 wifi from half full, charges pretty darn fast. Love the wireless charging, no need to plug phone in, slower charge but that's expected. It has worked with every device we own, 2 iPad's,2 iPhones,3 android phones,2 android tablets and a kindle, yes we own a bunch of electronics, three kids plus the wife and me, the biggest kid of them all!

Can it be used in a "bypass" mode as a dock? In other words, have it plugged into the wall and charge devices without it constantly charging the internal battery of the qi device.

Yes it can, it is different from my ankor 12,000 mAh external battery, if it's plugged in to charge it will charge it's battery and whatever you have plugged in, this one seems to only charge the phone when plugged in, when the phone is full it charges the battery.
Now that could be wrong, the charging lights on the battery can be confusing what is actually going on, it could be charging the external battery and whatever is plugged in, the device manual looks like it was crudely translated,I hear the company is releasing a new pdf with updated instructions, either way it doesn't effect me.
One of the best features over other batteries is a normal micro usb is all you need to charge it, the ankor has it's own brick, lose or break it the battery is useless. Really love this, owned several packs and this one goes everywhere with me, my Droid hasn't gone below 55% , just too easy to charge wireless, set the phone down, hit a button it charges, no cord to undo to use the phone, awesome

Just looked at the online faq, there is pass thru charging, plus I found out it has two modes by long pressing the only button, red light on wireless on, red light off,usb charging only, here is from the faq
Pass-Through Wired Charging: While the power bank is connected to a USB charger, long press the power button so that only the red LED is on. You can now use the USB1 (1A) jack to charge a device (USB2 is disabled due to insufficient current).Pass-Through Wireless Charging: While the power bank is connected to a USB charger, long press the power button so that only the red LED is on. Place a mobile device on top of the power bank, and align the center of its wireless receiver with that of the wireless transmitter within 2 cm (0.6 inch).

I don't know anything about qi charging and am just learning. Are there others out there like this? This looks really nice I'm just curious for comparison.

Dash Charge protocol analysis

On the Oneplus forum there is a thread where they analysed the dash-charging cable ( https://forums.oneplus.net/threads/...-cable-doing-internally-lets-probe-it.456017/ ).
The topic was finished by somebody posting a teardown of the cable revealing that it's dash-charging capabilities are encoded on a BQ2022 from ti.
The next logical step is to dig into the communication between the phone and the charger.
The same guy that tore down the cable also took a look at the chargers (google translate will be helpfull):
http://www.chongdiantou.com/wp/archives/1228.html Mains
http://www.chongdiantou.com/wp/archives/1339.html Car
Maybe we can continue the investigation here....

So, I did some digging around the Car-Unit with my Logic Analyzer.
Description of setup here: http://imgur.com/a/G7pPN
The charger waits for a current draw (i didn't bother testing it's thresholds) and then reads/checks-for the E²PROM embedded in the plug of the cable (presumably containing an authentication for dash).
At a similar time the phone sends a kind of "preamble" consisting of high-low transitions of varying lengths (but this doesn't seem to important to the charger, it tries to "dash" even without it).
Afterwards the phone and charger start exchanging 9 bits of data in bursts. One USB-Data-Line is clock, the other one is data. The chargers supplies the clock and the first 9 bits and after a short pause the phone gets to reply with another 9 bits as the charger supplies another "clock-burst".
At the beginning (before dash-charging is in effect), the charger sends 150h and the phone replys with 158h.
Once the phone is ready to begin dash-charging it replys with 178h instead.
The charger then configures it's Step-Down Converter for ~4.5V of output voltage and then sends 148h to the phone.
It either replies with 170h if the voltage is too high or 178h if the voltage is correct (I didn't see a reply for "too low", but it might exist).
If the phone replies 170h the charger lowers the voltage by about 100mV-200mV and "asks" again.
Once the phone replies with 178h the charger stops lowering the voltage and sends 14Ch to which the phone replies with 141h.
During the dash-charging process the charger periodically sends 144h to which the phone replies with a number which seems to roughly coincide with the state of charge (i have seen values from 16Eh to 178h).
The charger seems to nudge-up the voltage every once in a while (presumably when the current dropped below a threshold).
If the battery is relatively full (i tested at 90% charge) the "dash-charging-cycle" doesn't even start and the communication stays at an exchange of 150h/158h data "words".
I did some minor probing on the wall-wart with a stripped USB 3.0 extension and found that it uses the same commands but with the lowest bit set (i.e. it adds 1 to the command codes). Unfortunately the USB 3.0 cable had some internal resistance ruining most of the analog measurements.
todo:
- I didn't manage to capture is the transition from dash charging back to "normal" 5V mode at the end of the charge cycle.
- The values communicated at the transition from the voltage-setting process to the dash charging operation are unclear to me (but they appear to be always the same).

Do you think it's safe to use OnePlus 3 brick or car Dash charger with let's say micro USB cable and charge other phones? Or OnePlus power bank?

nitramcek said:
Do you think it's safe to use OnePlus 3 brick or car Dash charger with let's say micro USB cable and charge other phones? Or OnePlus power bank?
Click to expand...
Click to collapse
it's safe as with other phone or cable it will act as a normal charger blocking at 1.5A.
Dash charge will only activate if, the dash cable is used with a dash charging phone or oppo vooc phone.

Le_Zouave said:
it's safe as with other phone or cable it will act as a normal charger blocking at 1.5A.
Dash charge will only activate if, the dash cable is used with a dash charging phone or oppo vooc phone.
Click to expand...
Click to collapse
Great, so It's safe to use my car Dash charger for charging other phones to.

atheist93 said:
So, I did some digging around the Car-Unit with my Logic Analyzer.
Description of setup here: http://imgur.com/a/G7pPN
The charger waits for a current draw (i didn't bother testing it's thresholds) and then reads/checks-for the E²PROM embedded in the plug of the cable (presumably containing an authentication for dash).
At a similar time the phone sends a kind of "preamble" consisting of high-low transitions of varying lengths (but this doesn't seem to important to the charger, it tries to "dash" even without it).
Afterwards the phone and charger start exchanging 9 bits of data in bursts. One USB-Data-Line is clock, the other one is data. The chargers supplies the clock and the first 9 bits and after a short pause the phone gets to reply with another 9 bits as the charger supplies another "clock-burst".
At the beginning (before dash-charging is in effect), the charger sends 150h and the phone replys with 158h.
Once the phone is ready to begin dash-charging it replys with 178h instead.
The charger then configures it's Step-Down Converter for ~4.5V of output voltage and then sends 148h to the phone.
It either replies with 170h if the voltage is too high or 178h if the voltage is correct (I didn't see a reply for "too low", but it might exist).
If the phone replies 170h the charger lowers the voltage by about 100mV-200mV and "asks" again.
Once the phone replies with 178h the charger stops lowering the voltage and sends 14Ch to which the phone replies with 141h.
During the dash-charging process the charger periodically sends 144h to which the phone replies with a number which seems to roughly coincide with the state of charge (i have seen values from 16Eh to 178h).
The charger seems to nudge-up the voltage every once in a while (presumably when the current dropped below a threshold).
If the battery is relatively full (i tested at 90% charge) the "dash-charging-cycle" doesn't even start and the communication stays at an exchange of 150h/158h data "words".
I did some minor probing on the wall-wart with a stripped USB 3.0 extension and found that it uses the same commands but with the lowest bit set (i.e. it adds 1 to the command codes). Unfortunately the USB 3.0 cable had some internal resistance ruining most of the analog measurements.
todo:
- I didn't manage to capture is the transition from dash charging back to "normal" 5V mode at the end of the charge cycle.
- The values communicated at the transition from the voltage-setting process to the dash charging operation are unclear to me (but they appear to be always the same).
Click to expand...
Click to collapse
Really interesting analysis. What's your goal? Enabling dash charging without dash accessories?
(USB-C for example)

My primary motivation is curiosity.
If the protocol turns out to be sufficiently simple to replicate (which is looking good at the moment) I might try and build a dash powerbank to quickly top of my battery. I wouldn't want 3+ Amps going through a flimsy micro-to-c adapter from a vooc bank...

atheist93 said:
My primary motivation is curiosity.
If the protocol turns out to be sufficiently simple to replicate (which is looking good at the moment) I might try and build a dash powerbank to quickly top of my battery. I wouldn't want 3+ Amps going through a flimsy micro-to-c adapter from a vooc bank...
Click to expand...
Click to collapse
hmm, so you're trying to replicate it on the hardware side, that's a cool application and it'd be great to have other options for power banks and car chargers.
i honestly don't know much about the topic, but do you think i'd be possible to replicate it on the software side? ie, mimic the protocol to enable faster charging when plugged into a USB-C fast charging output? (but also limit it to 3A since that's a safe max similar to the Nexus 5X/6P)

I am pretty sure that it is not possible to do it in software only.
The whole point of Dash is to let the charger do the regulating and make the phone just "pass-through" the raw connection to the battery.
You might be able to trick the phone into switching it's "pass-through" feature on without getting the right initialization, but this would frankly be stupid as the result would be 5V from the USB-Port pushing directly into the lithium cell which is supposed to stay below 4,2V. Initially the internal resistance of the USB-Cable might limit the current sufficiently to prevent an immediate catastrophic failure, but I can't imagine it working out well in the long run...
The only possible solution i see for this to work is to have a device that plugs into your existing USB and steps down the voltage appropriately, but that is hardware again.

atheist93 said:
I am pretty sure that it is not possible to do it in software only.
The whole point of Dash is to let the charger do the regulating and make the phone just "pass-through" the raw connection to the battery.
You might be able to trick the phone into switching it's "pass-through" feature on without getting the right initialization, but this would frankly be stupid as the result would be 5V from the USB-Port pushing directly into the lithium cell which is supposed to stay below 4,2V. Initially the internal resistance of the USB-Cable might limit the current sufficiently to prevent an immediate catastrophic failure, but I can't imagine it working out well in the long run...
The only possible solution i see for this to work is to have a device that plugs into your existing USB and steps down the voltage appropriately, but that is hardware again.
Click to expand...
Click to collapse
a physical device which enables dash charging, particularly up to 3A via USB-C and 2.4A via USB-A to USB-C, would be of great use too

atheist93 said:
My primary motivation is curiosity.
If the protocol turns out to be sufficiently simple to replicate (which is looking good at the moment) I might try and build a dash powerbank to quickly top of my battery. I wouldn't want 3+ Amps going through a flimsy micro-to-c adapter from a vooc bank...
Click to expand...
Click to collapse
I bought the Dash car charger to be used as a car charger as well as backup power for camping etc. The dash charger seems to work with a wide range of input voltage. I would guess 8V-28V works fine.
I tested the dash car charger with eight AA Eneloop batteries but it didn't work well. The input voltage dropped from 11V to 6,6V. I think the stress was too much for eight batteries and dash charging didn't work. Ampere (app) displayed a reading of 1120mA for charging current.
Ten AA Eneloops were enough to dash charge the phone twice from 40% -> 90%. I also tested the dash car charger with a 19V PSU and it workerd fine as well.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
The next step is to buy lifepo 4 / lipo battery and build a case.

Thanks for the work done.
The problems with the enelope is the wiring... I guess there will be a massive voltage drop over the holder/wires and clips.
These things are not made for higher currents. I have seen experiments failing because of battery holders and crocodile clips very often. The problem is that these cables often have massive resistance which is no problem as long there is no current flowing... Greetings from Ohms law

Squabl said:
I bought the Dash car charger to be used as a car charger as well as backup power for camping etc. The dash charger seems to work with a wide range of input voltage. I would guess 8V-28V works fine.
I tested the dash car charger with eight AA Eneloop batteries but it didn't work well. The input voltage dropped from 11V to 6,6V. I think the stress was too much for eight batteries and dash charging didn't work. Ampere (app) displayed a reading of 1120mA for charging current.
Ten AA Eneloops were enough to dash charge the phone twice from 40% -> 90%. I also tested the dash car charger with a 19V PSU and it workerd fine as well.
The next step is to buy lifepo 4 / lipo battery and build a case.
Click to expand...
Click to collapse
How did your project go? And why Lipo batteries? Why not 18650 batts?

MonoTovarisj said:
How did your project go? And why Lipo batteries? Why not 18650 batts?
Click to expand...
Click to collapse
You can get custom Li-Po batteries to fit any size and are generally square. 18650s are cylindrical and there would be wasted space between the batteries so with a Li-Po you would be able to get higher capacity. Just a wild guess

MonoTovarisj said:
How did your project go? And why Lipo batteries? Why not 18650 batts?
Click to expand...
Click to collapse
I ended up using battery from my 18V cordless drill. The battery is quite small and light weight for it capacity. It was the easiest and cheapest option as I need battery backup very seldom.

I did a case for 4 x 18650 and the car charger, but got a little stuck in the project. Mostly because I don't have any electronic skills.

This looks cool.
What questions do you have? I can help out with the electronics. But it seems to be quite straight forward. But to be safe use protected 18650 cells. I can recommend the Panasonic NCR18650b, they are the best ones currently available. See: https://www.gearbest.com/batteries/pp_187046.html. You might need to adjust your design the protection makes them a bit longer than standart 18650 cells.

The design is already for the panasonic protected 18650 cells. However I would have liked a pcb in the buttom with full charging circuit and a usb-c for charging. With my current design I have to take the cells out for charging. :-/

MonoTovarisj said:
The design is already for the panasonic protected 18650 cells. However I would have liked a pcb in the buttom with full charging circuit and a usb-c for charging. With my current design I have to take the cells out for charging. :-/
Click to expand...
Click to collapse
You want to connect the 4 cells in series right?
I haven't found any good 4s charging modules yet.
Building you own charger circuit based on an charger IC is hardcore electronics. I have tried and i took months.
So charging the externally should be fine really.

affmalg said:
You want to connect the 4 cells in series right?
I haven't found any good 4s charging modules yet.
Building your own charger circuit based on a charger IC is hardcore electronics. I have tried and I took months.
So charging the externally should be fine really.
Click to expand...
Click to collapse
Yeah series, as I need the voltage for the car charger, and 3.7 times 4 gives a nice 14,8V for the charger.
Regarding charging that was my conclusion as well, however if I wanted to commercialise it, I would need a built-in charging circuit.
I would be able to get wires to the top poles as well if that would help the design, then you would be able to charge them individually and switch to a serial connection when in use.

Galaxy tab s2 9.7 very Slow charging!

Hi.
My galaxy tab s2 charging very slowly. It takes about 3 days to full charge.
I allready try 15 or more chargers and cabels (including original).
I format and delete cache files
I downgrade to android 6.0.1
I replace the charging port
The only thing i don't do is to replace the battery, but the battery (when finally get charged) drain like normal.
Please help i really dont have anymore ideas.
Thank you!

I have this also. Had slow charging for months. The first time samsung fixed it and sent me a new charger. The second time i was out of warranty so i replaced the charging port myself, tried many different chargers and cables and can't figure it out. It charges really really slow.

leyvatron said:
I have this also. Had slow charging for months. The first time samsung fixed it and sent me a new charger. The second time i was out of warranty so i replaced the charging port myself, tried many different chargers and cables and can't figure it out. It charges really really slow.
Click to expand...
Click to collapse
I charge with my Moto fast charger and it seems to charge it faster than the Samsung one.

jahciple said:
I charge with my Moto fast charger and it seems to charge it faster than the Samsung one.
Click to expand...
Click to collapse
if you have slow charging issue, the tablet gives you a warning to use the original charger to charge it fast. If you don't get the notification of slow charging, then your tablet doesn't have any charging issues.

update: i replaced the charging port and the battery. but still no luck. the percentages keep dropping when my fast charger is connected
i'm out of ideas so if someone have some thoughts i'm listening.

Itamar1239 said:
update: i replaced the charging port and the battery. but still no luck. the percentages keep dropping when my fast charger is connected
i'm out of ideas so if someone have some thoughts i'm listening.
Click to expand...
Click to collapse
I wanted to call Samsung and asked them what they fixed when I sent it to them when it was on warranty.

leyvatron said:
I wanted to call Samsung and asked them what they fixed when I sent it to them when it was on warranty.
Click to expand...
Click to collapse
now the battery stops charging at 22% (it takes 1 day to charge to 22% lol)
if you call samsung please let me know what they said.
thank you.

Itamar1239 said:
now the battery stops charging at 22% (it takes 1 day to charge to 22% lol)
if you call samsung please let me know what they said.
thank you.
Click to expand...
Click to collapse
did you disconnect and reconnect the battery?

leyvatron said:
did you disconnect and reconnect the battery?
Click to expand...
Click to collapse
I did.
And like i said i even replace the battery
But still no luck.
I suspect that some chip on the motherboard is not working right, but that just guessing.
Any more ideas are more than welcome

Itamar1239 said:
I did.
And like i said i even replace the battery
But still no luck.
I suspect that some chip on the motherboard is not working right, but that just guessing.
Any more ideas are more than welcome
Click to expand...
Click to collapse
Also out of ideas myself

As I wrote on samsungboard recently;
"I have tried multiple cables*(that work fine with all other phones - Samsung S7/Galaxy tab S2 9.7/Sony etc)
I have tried multiple chargers (Samsung quick charge as well as Samsung standard and Anker 6 port charger)
Tried changing the USB mode (*#0808#)
I have tried resetting device (long press vol up/down/power)
When connecting device to PC to use Odin to downgrade it is not even seen by Windows 10 (again it only charges albeit slowly - this to me is an indication that D+/D- are not handled correctly by the PMIC sw which in my mind is the root cause of this whole issue).
"
https:// us. community.samsung.com/t5/forums/v3_1/forumtopicpage/board-id/tablets/thread-id/1961/page/5
I also see in devops bugreport-xxxx.txt cable type is 4 and wire_status 4;
<6>[16050.764777] [c1] sec-battery battery.27: sec_bat_set_property: current_cable(4), wc_status(0), wire_status(4)
<6>[16050.764884] [c0] sec-battery battery.27: sec_bat_cable_work: Start
<6>[16050.764904] [c0] sec-battery battery.27: sec_bat_cable_work: Cable is NOT Changed(4)
<6>[16050.767168] [c1] sii8240: detection restarted
<6>[16050.767187] [c1] of_sii8240_hw_reset()
<6>[16050.769768] [c1] sec_chg_get_property: slow-charging mode
Whereas in kernel/kmsg logs cable type is 1;
<6>[ 4.613200] [c6] sec_chg_get_property: Charger Cable type : 1
Skickat från min BLA-L29 via Tapatalk

luckeb said:
As I wrote on samsungboard recently;
"I have tried multiple cables*(that work fine with all other phones - Samsung S7/Galaxy tab S2 9.7/Sony etc)
I have tried multiple chargers (Samsung quick charge as well as Samsung standard and Anker 6 port charger)
Tried changing the USB mode (*#0808#)
I have tried resetting device (long press vol up/down/power)
When connecting device to PC to use Odin to downgrade it is not even seen by Windows 10 (again it only charges albeit slowly - this to me is an indication that D+/D- are not handled correctly by the PMIC sw which in my mind is the root cause of this whole issue).
"
https:// us. community.samsung.com/t5/forums/v3_1/forumtopicpage/board-id/tablets/thread-id/1961/page/5
I also see in devops bugreport-xxxx.txt cable type is 4 and wire_status 4;
<6>[16050.764777] [c1] sec-battery battery.27: sec_bat_set_property: current_cable(4), wc_status(0), wire_status(4)
<6>[16050.764884] [c0] sec-battery battery.27: sec_bat_cable_work: Start
<6>[16050.764904] [c0] sec-battery battery.27: sec_bat_cable_work: Cable is NOT Changed(4)
<6>[16050.767168] [c1] sii8240: detection restarted
<6>[16050.767187] [c1] of_sii8240_hw_reset()
<6>[16050.769768] [c1] sec_chg_get_property: slow-charging mode
Whereas in kernel/kmsg logs cable type is 1;
<6>[ 4.613200] [c6] sec_chg_get_property: Charger Cable type : 1
Skickat från min BLA-L29 via Tapatalk
Click to expand...
Click to collapse
thank for the info.
Like I said, I sent in my tablet to Samsung when it was under warranty with the original white samsung charger and they sent the tablet back with a slower charging black samsung charger. I have exchange the usb port, tried different cables and plugs, tried resetting, etc... and nothing has worked.
Keep us updated on what happens. :good:

leyvatron said:
thank for the info.
Like I said, I sent in my tablet to Samsung when it was under warranty with the original white samsung charger and they sent the tablet back with a slower charging black samsung charger. I have exchange the usb port, tried different cables and plugs, tried resetting, etc... and nothing has worked.
Keep us updated on what happens. :good:
Click to expand...
Click to collapse
Hi, Charging cable from Cambridge Soundworks Oontz angle 2 has worked for me.

hi Guys!!!!!!!! i too had the same problem stated above and i got the reason of it in youtube and here is the link of the video:
and this video tells that we need to replace the IC of the device where this problem is very common in most of samsung galaxy tab s2's

vjackaadhitya said:
hi Guys!!!!!!!! i too had the same problem stated above and i got the reason of it in youtube and here is the link of the video:
and this video tells that we need to replace the QC of the device where this problem is very common in most of samsung galaxy tab s2's
Click to expand...
Click to collapse
That's not something most people can do... successfully. These are the hardest type of ICs to replace. A precision temp controlled hot air station with the skillset to use it is required. Full ESD protocols need to followed. You can easily destroy the multilayered PCB if you don't do it right... you get one shot at it.

I have T715Y, and it's really slow to charge. The current monitor show that it only pull 0.45A. The charger itself capable of supplying more than 2A on other device.
On the tablet, I try to monitor the current internally, and it said it connect to usb powered, not ac powered, and I already tried swapping other chargers. Maybe that's why it's only pulling half amps. Tried cleaning the charging port with some isoprophil alcohol and pinset, nothing change. Maybe I need to swap the charging port, but searching it in 2021 was hard.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

@xdanubi it shouldn't use AC as batteries are only being charged by DC.

xdanubi said:
I have T715Y, and it's really slow to charge. The current monitor show that it only pull 0.45A. The charger itself capable of supplying more than 2A on other device.
On the tablet, I try to monitor the current internally, and it said it connect to usb powered, not ac powered, and I already tried swapping other chargers. Maybe that's why it's only pulling half amps. Tried cleaning the charging port with some isoprophil alcohol and pinset, nothing change. Maybe I need to swap the charging port, but searching it in 2021 was hard.
View attachment 5389291
Click to expand...
Click to collapse
If the device is in use it will likely skew the charging curve and not draw as much as with the screen off. If you turn the display on and read within a second or less while charging you can probably see what it's actually drawing screen off.
Or simply count how many seconds it takes to charge 1% or minutes to charge to 10%, etc.
If the battery capacity has dropped more than 80% of it's original capacity it's time to replace it before it fails.
Any battery swelling is a failure, replace asap.
Erratic charging can indicate a failure as well.
A sudden drop in capacity indicates a failure.
It could simply be a failed battery.
A battery will last roughly 1-3 years depending how it's used/conditions ie temperature and time it's at near 100%.

My S2 started exhibiting this problem too. Basically it won't pull more than 450 ma from the charger. I discovered that with a custom charge cable that shorts the usb lines together, I was able to get it to draw about 1.5 amps @ 5v. You can get a little more if you supply it with a little more volts (5.5 for instance).
Currently i am using a bench power suppy connected to a micro usb tail that has the dp dm lines tied together.
I have some usb c female breakouts coming from amazon today that I will solder on to my custom micro usb tail which will hopefully allow me to charge it from my 6 port vogek charger.
I agree that it most likely had an IC go bad but replacing that is a MAJOR under taking. 1.5 amps is enough that it will still get about 1 amp charge while your actively using it so theoretically it should go from 0 to 100% in 5.8 hours. Less if you power it down. Good enough!

trnexus01234 said:
My S2 started exhibiting this problem too. Basically it won't pull more than 450 ma from the charger. I discovered that with a custom charge cable that shorts the usb lines together, I was able to get it to draw about 1.5 amps @ 5v. You can get a little more if you supply it with a little more volts (5.5 for instance).
Currently i am using a bench power suppy connected to a micro usb tail that has the dp dm lines tied together.
I have some usb c female breakouts coming from amazon today that I will solder on to my custom micro usb tail which will hopefully allow me to charge it from my 6 port vogek charger.
I agree that it most likely had an IC go bad but replacing that is a MAJOR under taking. 1.5 amps is enough that it will still get about 1 amp charge while your actively using it so theoretically it should go from 0 to 100% in 5.8 hours. Less if you power it down. Good enough!
Click to expand...
Click to collapse
What is your experience so far? Does your custom cable work? If yes can you please be more specific how to construct it? There are many users with the same problem!

Question Car USB Charging

My OnePlus 7 pro would charge great in my cars USB using Android auto. My new OnePlus 10 pro doesn't charge at all using the same car USB port and original red cable. Ampre app shows at most about 260ma then immediately drops to about 50ma charging and an external USB monitor device shows .4 amp charging rate but driving with Android auto on a 1 hour commute, my phone charge % will drop by 1-2%. Anyone know what's going on?

I do not have an answer to this, but I have exactly the same problem. My last phone was a Oneplus 9 and the cable I used for that is doing exactly the same as you have described. I've only had my phone for a few days and just realised this yesterday.

State of Charge is largely voodoo.
0.4 Amperes is what your device is using including charging current.
50 mA is what is going into your battery.
1-2% is not statistically significant.
You need to take a 20 hour road trip to see if it maintains charge.

the same problem with the oneplus 10 pro, i come from the whole oneplus series being the last one the 9 pro and it was charging fine until now. I even changed the charger and it didn't work the same way, I took my car to check if the charge was working correctly and I deduced that it was the cell phone, but only with the car charger it doesn't work. I agree that it is a software issue not accepting the configured voltage.