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Throughout a day I charge my Tilt from a variety of sources: the stock charger, my old Apache's charger, my PC, car charger, my Moto headset charger ...
Looking at them all the only difference I see listed is the amperage.
The Stock charger is 1Amp, so is the Apache's
The Moto charger is 550mA
iGo Charger is 1.5Amp
no idea what the PC or the car charger output is.
I am assuming that the differences in amperage would simply effect how quickly the battery charges to full. Is that correct?
Maybe also that a fully depleted battery would need a full 1Amp charger to begin charging ... the 550mAmp might not cut it for a fully depleted battery.
Would charging with a lower amp charger (550mA) or a higher amp charger (1.5A) have any long term negative impact on the charging or overall battery life?
Just curious ...
batteryuniversity.com
telll us wat u learn
The amp rating is the normal maximum current that can flow from the particular charger. They all are spec'd to put out a regulated 5V but the current comes into play if you are using the phone at the same time as charging. If the phone draws more than the charger can supply then it's going to take longer to charge or may not fully charge. Normal charger is 1A and with that the phone can be used most likely at the same time. With a 550ma charger I'd turn the phone off (standby) to ensure a full charge in a reasonable time.
None should affect battery life, just time to reach full. The charge lite on the phone is your guide, when it's amber, it's charging, green it's full, simple as that.
The only thing that will harm the lithium is to take the phone to dead for long periods, that's the hardest thing on a lithium.
Also see http://wiki.xda-developers.com/inde...y car or USB charger! It just doesn't charge!
I seem to get a longer battery life (first step down from 100%) if I charge my MDA C4 using the supplied charger as opposed to a charge from a PC using the USB lead.
If I charge using the charger, and just use 2G, I get approx 14 hours before the first drop in the batterymeter. From the PC it happens well before 11 hours.
Is this possible or am I just imagining things?
tmohammad said:
I seem to get a longer battery life (first step down from 100%) if I charge my MDA C4 using the supplied charger as opposed to a charge from a PC using the USB lead.
If I charge using the charger, and just use 2G, I get approx 14 hours before the first drop in the batterymeter. From the PC it happens well before 11 hours.
Is this possible or am I just imagining things?
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Click to collapse
To get full capacity phone needs 5v 1000mA (= 1A) input, which is the charger outputs. If the PC USB output cannot pump that amount it might last shorter....
a PC's standard USB port only outputs 500mA (0.5A)
i think the supplied charger may be 2A (cant check atm), i know the official HTC Car Charger is 2A.
Cheers,
mugglesquop said:
a PC's standard USB port only outputs 500mA (0.5A)
i think the supplied charger may be 2A (cant check atm), i know the official HTC Car Charger is 2A.
Cheers,
Click to expand...
Click to collapse
My original HTC charger (Model: TC P300) outputs 5v 1A
Interesting. I'll check the HTC charger when I get home.
However, Would this not mean that it would just take longer to charge the battery?
(Analagous to having to fill a bucket of water from a 1/2" bore pipe as opposed to a 1" bore pipe).
Artyaw said:
My original HTC charger (Model: TC P300) outputs 5v 1A
Click to expand...
Click to collapse
My original HTC charger is at 5V 2A.
What I did notice is that charging form USB takes much longer than charging off the wall.
Sergio PC said:
What I did notice is that charging form USB takes much longer than charging off the wall.
Click to expand...
Click to collapse
It will do, should not effect the overall charge (as long as it is left long enough!)
tmohammad said:
(Analagous to having to fill a bucket of water from a 1/2" bore pipe as opposed to a 1" bore pipe).
Click to expand...
Click to collapse
Correct, actually water analogy is quite often used here
yes i thought that...
phone charge lasted longer with the mains charger than the usb on pc
and usb pc takes ages to charge full
So I guess we'll all be using our wall chargers now? As the charge is faster and some believe better!
Make no sense to me as to why the charge of the PCs USB cable is not as good as from the wall....
However the slow charge time bit of it makes sense
Car Charger
I have huge problem with my car charger. I use Noname USB car charger, that worked perfectly with my Trinity. Now, when i connect my Diamond it sometimes connects and disconnects the device to USB twice in two seconds and so if the battery is low message about battery fklashes in an out. SOmetimes it does not happen and the battery is charging normally. When i start IGO8 while battery is full and Diamond being charged, it sometimes LOOSES power and after couple of hours it gets out of power even when charged. Sometimes it doesnt happen and the device is charging properly, but very very slowly. When i turn device off, it charges normally. I tried two different chargers and get the same results. But none was HTC original.
It's irrelevent how the phone was charged. If the battery is full, then its full ,and it will last the same period of time irrespective of how it was charged.
Charging rates will vary depending on input current, but once the touch sensor light stays on, then the battery is full.
Recently my X1 cannot be charged with USB cable through wall outlet & even car charger , but able to charge with USB cable through PC.
Anyone do encounter the same problem?
Well that's a strange one - how long was it connected to the wall?
Without getting into the discussion about volts and amps provided, and amps drawn by the phone, any method should charge.
In terms of speed, I would think the wall would charge fastest (see above), and the USB slowest.
Did the phone show on the top bar, the charging icon when attached to the wall? Or after a period of time there was no increment in the % charge showing??
If the battery was down to 0%, you probably wouldn't see an immediate increase in the % charge. The % charge is orientative, especially at both ends of the scale.
paul c said:
Well that's a strange one - how long was it connected to the wall?
Without getting into the discussion about volts and amps provided, and amps drawn by the phone, any method should charge.
In terms of speed, I would think the wall would charge fastest (see above), and the USB slowest.
Did the phone show on the top bar, the charging icon when attached to the wall? Or after a period of time there was no increment in the % charge showing??
If the battery was down to 0%, you probably wouldn't see an immediate increase in the % charge. The % charge is orientative, especially at both ends of the scale.
Click to expand...
Click to collapse
I do agree with you. Charging with wall outlet is faster. Therefore, normally I'm charging my X1 with wall outlet, unless in office, will use PC USB.
Top bar never show charging icon, but once I charge it with PC USB, the charging icon show up immediately.
It seems like no power for the USB when connected to the wall outlet. I've tested with battery removed, plugged in USB cable connected to wall outlet, there is no charging illumination light. I cannot power on it.
I tried to recall, it happened after I used a USB charger for my MP3 player. The next day, when I tried to charge with car charger. To my surprise, the USB connection notification showed up (I do remember, while charging with wall outlet or car charger, it will never prompt me for USB connection).
I don't think, it is the ROM issue. Try a few ROM still having the same problem.
From now, I got to live with PC USB :|
X1 Charging problem
I have same problem. I can not charge via both USB-PC and Wall. In order to charge the phone, I have to switch it off and then charge it.
This happened after I used CHEAP car charger from dealexteme.com
Now everytime I want to charge my phone, I have to switch it off.
torquefever said:
I have same problem. I can not charge via both USB-PC and Wall. In order to charge the phone, I have to switch it off and then charge it.
This happened after I used CHEAP car charger from dealexteme.com
Now everytime I want to charge my phone, I have to switch it off.
Click to expand...
Click to collapse
let's me try with power off charging with wall outlet
well thats why se said USE only original accessories...you need to change the power ic on the board.
donottouch said:
well thats why se said USE only original accessories...you need to change the power ic on the board.
Click to expand...
Click to collapse
will the SE service centre entertain changing 'power ic'?
make sure your charger have an out put minimum is 1.Ah ,if lest than that it will not work , that is the troublem
nguyennghiep said:
make sure your charger have an out put minimum is 1.Ah ,if lest than that it will not work , that is the troublem
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Click to collapse
I'm using the original SE charger!? I would not think the problem with the charger, but my X1 was screwed by the incompatible MP3 USB charger
Yep same with me, not sure why mine started doing that though, I never got used a cheap charger. Maybe its the rom... I am trying a new one now.
torquefever said:
I have same problem. I can not charge via both USB-PC and Wall. In order to charge the phone, I have to switch it off and then charge it.
This happened after I used CHEAP car charger from dealexteme.com
Now everytime I want to charge my phone, I have to switch it off.
Click to expand...
Click to collapse
digitalspree said:
Yep same with me, not sure why mine started doing that though, I never got used a cheap charger. Maybe its the rom... I am trying a new one now.
Click to expand...
Click to collapse
it's not caused by the ROM, I'm very sure. I've installed different ROM. The problem still exist.
I am having a similar problem. When the phone completely discharges , i am unable to charge it with any power adapter or even car charger. I have to initially charge the phone using a PC , then after the power is around 15% , then the phone gets charged with a normal adapter.. any suggestions??
same problem. It happends when the battery is completely discharged.
what I do is use a charger w/ low amp rating (.1) and plug it in for at least 10-20min. Give it some time, it will start charging after a while (indicated by the blinking lights). After that, you can turn it on and charge it normally
I had a similar problem twice.Both times I solved it by replacing the charger.
the same happen to me and i have another issue
my xperia doesnt work as usb mass storage!!!
the solution was buying another charger but..the usb mass storage issue still not working as a flash drive!!
luirhy said:
same problem. It happends when the battery is completely discharged.
what I do is use a charger w/ low amp rating (.1) and plug it in for at least 10-20min. Give it some time, it will start charging after a while (indicated by the blinking lights). After that, you can turn it on and charge it normally
Click to expand...
Click to collapse
It works with Z1 too. Thanks a lot!
I guess something goes wrong with battery controller
Iam using the Dell Streak 7 as a sat nav system in the car. Ive tried to charge it up on the usb car adapter but it seems to loose its charge over time, making the D7 unusable for the purpose of a sat nav. Am i doing something wrong or is there a special usb car adapter for the job?
Thanks, David.
Does it say it's charging when plugged in?
Depending on how powerful your charger is it's likely that it's draining faster then the charger can provide. At best on my s5 it's just barely faster then the charger and the s7 needs more power then that.
Thanks for peply, yes it states it is plugged in. I came to the same conclusion. Wonder if there are any other chargers that have more juice.
diddy64 said:
Thanks for peply, yes it states it is plugged in. I came to the same conclusion. Wonder if there are any other chargers that have more juice.
Click to expand...
Click to collapse
There are several that will do the job. Just look for specs that include putting out 5.5 volts and 2 amps. Several of the chargers that are made for the iPad2 will work. And you may want to install a lighter adapter that you can wire directly to the battery that will allow up to 2 or 3 amps from each port
Most standard USB ports do not put out enough power to charge the DS7. The best bet is to use a inverter that plugs into your cigarette lighter and then plug the charger into that, not just the USB cable.
http://www.amazon.com/Power-Inverter-Charger-Portable-SmartPhones/dp/B00144KS6W
I use this setup:
Bestek Adapter
Trans4m lighter adapter
The Bestek I have wired to the battery so I have no fuse problems with lighter, and with that I can charge either my iPad2 or my Streak7, IF I need to charge both, then I plug the Transform adapter into the Bestek and can then charge BOTH devices, the Ipad2 AND the Streak7 and a couple of other things if need be
Thank you guys, this gives me alot of hope. Once again you all get my thanks.
Cheers,
David.
Yea, like they previously stated not all chargers are created equal.
Unless it states it's a tablet/ipad charger you cant assume it's doing 2+ amps. Most phone/lower end ones can only do 500mA/1A.
Realistically you'd prob need at least 2 amps to get a net gain while using gps/anything demanding. But I dont know if it would even try and draw above that if given the chance. [email protected] is what the bundled wall charger does and can accept up to 5.5v (as it's still within the +/-10% tolerence of the usb spec, but just barely)
My fully charged stock S7 WiFi running 514 draws only 45-70mA. Maybe starting fully charged would help?
wptski said:
My fully charged stock S7 WiFi running 514 draws only 45-70mA. Maybe starting fully charged would help?
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Click to collapse
I don't know anything about how it works, but I imagine tablets are wired to know when they are receiving the correct amount of input. For instance, if you connect your Streak 7 to a powered USB hub that only puts out 5 volts, it won't charge nor will it charge when connect via usb to the PC, it has to be receiving 5.5 volts and 2 amps before it will let itself receive charge. I have an iPad that is the same way and have noticed all the tablets I have had my hands on are the same, Galaxy Tabs, Transformers, Xoom... all those have to receive higher numbers to charge. So you have to have a cigarrette lighter adapter that puts that out, if it's for a cell phone it won't do anything for it
cdzo72 said:
I don't know anything about how it works, but I imagine tablets are wired to know when they are receiving the correct amount of input. For instance, if you connect your Streak 7 to a powered USB hub that only puts out 5 volts, it won't charge nor will it charge when connect via usb to the PC, it has to be receiving 5.5 volts and 2 amps before it will let itself receive charge. I have an iPad that is the same way and have noticed all the tablets I have had my hands on are the same, Galaxy Tabs, Transformers, Xoom... all those have to receive higher numbers to charge. So you have to have a cigarrette lighter adapter that puts that out, if it's for a cell phone it won't do anything for it
Click to expand...
Click to collapse
The voltage is constant but current isn't. It won't know how much current is available unless it asks for it. It's like a 2A fuse, you can draw up to 2A, no more.
Even with a fully charged battery it'll show charging at 98% for a short time and that's when I saw the higher 70mA but I'm not sure if it's in the CC or CV part of a Li-Ion charge cycle but I'd guess CV because it's less than 100mA.
My bad thinking measuring AC input current instead of DC current since this thread is about USB power.
Used a cheap ReTrak USB extension cord that loses connections to seperate the wire to measure DC current. My fully charged S7 showing 100% charge still draws 150mA after hours of being plugged in. Since Li-Ion cells normally don't use a constant trickle charge, I "assume" something draws on the battery all the time along with the indicator light and buttons.
Booting up it draws a little over 1A, fully charged while booted up, it draws around 600mA. While charging and powered up, it draws 914mA. Charging while off, it draws 1160mA. Far from 2A.
wptski said:
My bad thinking measuring AC input current instead of DC current since this thread is about USB power.
Used a cheap ReTrak USB extension cord that loses connections to seperate the wire to measure DC current. My fully charged S7 showing 100% charge still draws 150mA after hours of being plugged in. Since Li-Ion cells normally don't use a constant trickle charge, I "assume" something draws on the battery all the time along with the indicator light and buttons.
Booting up it draws a little over 1A, fully charged while booted up, it draws around 600mA. While charging and powered up, it draws 914mA. Charging while off, it draws 1160mA. Far from 2A.
Click to expand...
Click to collapse
I understand that, but you are missing the point, if the internal wiring of these tablets don't receive the 2A they want they WILL NOT even begin to charge. I tried literally dozens of chargers when I first got my S7, spent a couple hundred bucks actually, and none of the chargers not meant for larger devices won't work, and what those chargers all had in common, 2A output
The S7 can and will draw off low capacity ports, it just wont admit to charging unless it's at least 1A as it's just that.
I've had my S7 charge off a 500mA port on my pc at the rate of like 1%/hour while sleeping. As it's barely gaining even while idleing it's not really charging in the literal sense, but it's definitely charging in the technical sense.
Are your data lines shorted together? I believe most high draw devices wont attempt to pull 2A unless it detects that it's on a high draw charger (which I think do this to indicate it as such)
cdzo72 said:
I understand that, but you are missing the point, if the internal wiring of these tablets don't receive the 2A they want they WILL NOT even begin to charge. I tried literally dozens of chargers when I first got my S7, spent a couple hundred bucks actually, and none of the chargers not meant for larger devices won't work, and what those chargers all had in common, 2A output
Click to expand...
Click to collapse
I don't know why your various chargers didn't work but it doesn't seem to be because of current. It didn't charge at 2A or even close to that.
If what your saying correct, why was I able to charge at less than 2A then? Could this be a ROM issue? I only had Froyo for a few hours but I've read that it didn't support USB charging which came with HC but it only charges with the S7 OFF.
It's possible that the demand went higher and I just didn't see on my current clamp meter. I'll have to try a current clamp and a scope to see if I missed a peak level.
Also what we are refering to as the charger might not be a charger but only a power supply and the actual charging circuit is in the S7.
I did notice one odd thing though. The green LED lights up at around 90% battery level and it's still charging. I downloaded a battery app which read the same level.
wptski said:
I don't know why your various chargers didn't work but it doesn't seem to be because of current. It didn't charge at 2A or even close to that.
If what your saying correct, why was I able to charge at less than 2A then? Could this be a ROM issue? I only had Froyo for a few hours but I've read that it didn't support USB charging which came with HC but it only charges with the S7 OFF.
It's possible that the demand went higher and I just didn't see on my current clamp meter. I'll have to try a current clamp and a scope to see if I missed a peak level.
Also what we are refering to as the charger might not be a charger but only a power supply and the actual charging circuit is in the S7.
I did notice one odd thing though. The green LED lights up at around 90% battery level and it's still charging. I downloaded a battery app which read the same level.
Click to expand...
Click to collapse
You were able to charge because your charger was CAPABLE of outputting 2A at least... try charging with one that CAN'T put that out and you should find that the Streak will not charge, on ANY ROM has been my experience, custom or stock
cdzo72 said:
You were able to charge because your charger was CAPABLE of outputting 2A at least... try charging with one that CAN'T put that out and you should find that the Streak will not charge, on ANY ROM has been my experience, custom or stock
Click to expand...
Click to collapse
Capable is the magic word here. The wall wart isn't putting out 2A from what I've seen, unless it does for a split second at the start which I'm going to look into.
Most wall warts at whatever their rating is put out a higher voltage with no load and slightly higher than its marked voltage under a load. If it required [email protected] max., you used a [email protected], S7 needs more current, the voltage would decrease. What's been stated here might be that the voltage was being pulled down and that's why the S7 wouldn't charge, not "really" the 2A issue.
I have a battery pack/cell load testing device used on RC stuff that connects via USB port for its graphic software. There were issues with certain Dell laptops that had a low voltage at their USB ports.
Maybe starting fully charged would help?
I have the OEM T-Mobile car charger and I've found that if I have a full charge before plugging the Streak into the charger it maintains a full charge for as long as I'm driving/using it. Otherwise, with a less than full charge I've watched it slowly discharge even though it's plugged in and is charging.
FYI: I also have a top of the line car charger for an iPad2 that charges the iPad no matter what charge level I plug it in. This iPad charger has a USB port which I have plugged the Streak USB cord into and it also doesn't keep up with the Streak's discharge if the Streak isn't a full charge to begin with. Kind of strange because I would think the iPad would draw more than a Streak. (the iPad isn't plugged in at the same time the Streak is charging)
DCoop said:
Maybe starting fully charged would help?
I have the OEM T-Mobile car charger and I've found that if I have a full charge before plugging the Streak into the charger it maintains a full charge for as long as I'm driving/using it. Otherwise, with a less than full charge I've watched it slowly discharge even though it's plugged in and is charging.
FYI: I also have a top of the line car charger for an iPad2 that charges the iPad no matter what charge level I plug it in. This iPad charger has a USB port which I have plugged the Streak USB cord into and it also doesn't keep up with the Streak's discharge if the Streak isn't a full charge to begin with. Kind of strange because I would think the iPad would draw more than a Streak. (the iPad isn't plugged in at the same time the Streak is charging)
Click to expand...
Click to collapse
The S7 must run some check before it tries to charge . Whatever it is the OEM supplied power supply passes the test.
What's the specs on your two power supplies?
Just remember if you dont have the same 2A for charging in the car. You cannot charge the streak while its TURNED ON. Same with USB charging, just turn the streak OFF, then charge. It will work. =)
Otherwise, Id get a DC to AC converter for the car, plug in your normal adapter.
Carrier: ATT
Rom: AOSiP-V4.0-Marshmallow-6.0.1
Issue: Motorola Turbo Charger
Info: I have had no problems with the stock charger for the last year. Recently, when I plug in the turbo charger into my device, it will not charge. Usually in Ampere, it says it average around 1950 mA of charge, after the issue started occurring, it gives the charging icon but ampere and the built in battery meter says not charging. It actually decreases the charge at a quicker rate.
What I have tried but failed:
Restarting device
Changing Cables
Unplugging charger from wall
What has worked but is not a real solution:
It seems that the phone accepts the wall charger and charges normally after I plug my phone in to my computer via just the cable and then back into the main charger.
424aca said:
Carrier: ATT
Rom: AOSiP-V4.0-Marshmallow-6.0.1
Issue: Motorola Turbo Charger
Info: I have had no problems with the stock charger for the last year. Recently, when I plug in the turbo charger into my device, it will not charge. Usually in Ampere, it says it average around 1950 mA of charge, after the issue started occurring, it gives the charging icon but ampere and the built in battery meter says not charging. It actually decreases the charge at a quicker rate.
What I have tried but failed:
Restarting device
Changing Cables
Unplugging charger from wall
What has worked but is not a real solution:
It seems that the phone accepts the wall charger and charges normally after I plug my phone in to my computer via just the cable and then back into the main charger.
Click to expand...
Click to collapse
This honestly sounds like a outlet problem or a charging box problem. I would check both those if you have not allready.
MellowRoms Nexus 6
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