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Kaiser Current draw at full processor load?

I am attempting to build a small 4xAA USB charger to use while on long flights so that I can watch movies. I notice that the wall charger is rated 5v 1000ma. I wonder if anyone has any clue what the Kaiser draws at full processor load. I can make a 4x AA charger with a 1000ma capacity, but if i could get away with something like a Minty Charger(2xAA, maybe like 500ma), I would, as the plans are there, and it would save me 15 bucks for a switching voltage regulator.
Has anyone done any work to this effect, and would they mind sharing their measurements?
Thank you in advance,
Ben

use batterystatus and check consumption when watching a movie or something

I will certainly check that, thanks!
Also does anyone know whether the kaiser has and odd charging tendedcies?
My plan basically calls for 4 aa batts wired in series to provide 6v, into a 5v switching voltage regulator, and out to USB. Will this be something that will work, or are there any odd little caveats i need to worry about?
Ben

The USB spec calls for a max of 500mA at 5V. Since the Kaiser can charge off of USB, then that should work.

I have a back ground in basic electronics, and building something like this would be right up my ally. But when I can find just what you want at a price like this>>
http://www.thepocketsolution.com/PSI-42555.html
I can't see any reason to bother building my own. I use this vary one, for just the same reasons you want one. And it works great.

GWelker62 said:
I have a back ground in basic electronics, and building something like this would be right up my ally. But when I can find just what you want at a price like this>>
http://www.thepocketsolution.com/PSI-42555.html
I can't see any reason to bother building my own. I use this vary one, for just the same reasons you want one. And it works great.
Click to expand...
Click to collapse
Wow! I suppose I should have done a little more research first That charger costs the same as a decent switching voltage regulator.
Does that thing look like it's easy to open up? I may wish to modify it slightly so that I can charge other USB devices off it. I also probably want to repackage it into something fun.
Thanks for letting me know about this charger... You have saved me a lot of soldering
Ben
edit:
http://www.thepocketsolution.com/PSI-36223.html
I'm scratching my head re this one. The tilt and the kaiser are, with very few exceptions the same phone. I would imagine that the battery chargers here are the same too, though this one is a couple bucks cheaper. The AAA model is only 10 bucks... I imagine that all these things are is a voltage regulator and an LED... if i am gonna rip one apart anyways, is there any reason i couldnt get the AAA model, tear it up, jack 4 AA batteries to it, and get all the benefits of the 15 dollar model, for 10? Im not really penny pinching, though if i decide to repackage the whole deal anyways, might as well save the 5 bucks and buy a USB jack
ben

with the cost of geting the parts, you can buy one for about USD 10.
kms

You might want to check that giving the phone 5 volts will actually put it into charge mode. I believe the mot razar won't charge off the USB unless it first communicates with the computer. Don't know though, I only borrowed the phone for a week when traveling for work.
As for power consumption, I took a 10 hour trip yesterday. Bought a USB car charger and used the data cable that came with the phone. I plugged it in and it went into charge mode. Running tomtom and such didn't charge the battery to any meaningful extent while it was plugged in. Fortunately, it didn't drain the battery either.
Maybe the phone knows the diff between USB and an OEM charger, and draws power accordingly (500mA for usb, 1 amp for OEM charger).
Edit: the car usb thing I picked up is rated for 5v +-.5 volt and 1 amp output (says the sticker anyway). Does the job I was hoping for and was cheap (6 bucks at fry's).

Nice!
I think im gonna order 2 of the battery chargers linked above. one i will keep stock (i leave for spain in a few weeks and need one to work)
the other i will rip apart and see if i can do something fun and exiting with it. I think i have an empty altoids box around somewhere.... the one i used to hide smokes from the parents in when I was a kid....
I like breaking stuff!
Ben

Note that the Tytn II's charge circuitry may require more than 500 mA if the battery is sufficiently discharged. In such conditions, a 500 mA charging current won't actually charge the battery. A 1000 mA charging circuit should be sufficient, as that matches the device's rating as specified in the manual.

Be real careful..
Be careful taking any home built electronics on a plane in these days since 9/11.
A girl in USA got done for having a battery and LED on her t-shirt in an airport and wasnt even flying...
id be amazed if you were allowed to take a home-built circuit onto a plane, esp. in the USA
just saying
g

pontifex33 said:
edit:
http://www.thepocketsolution.com/PSI-36223.html
I'm scratching my head re this one. The tilt and the kaiser are, with very few exceptions the same phone. I would imagine that the battery chargers here are the same too, though this one is a couple bucks cheaper. The AAA model is only 10 bucks... I imagine that all these things are is a voltage regulator and an LED... if i am gonna rip one apart anyways, is there any reason i couldnt get the AAA model, tear it up, jack 4 AA batteries to it, and get all the benefits of the 15 dollar model, for 10? Im not really penny pinching, though if i decide to repackage the whole deal anyways, might as well save the 5 bucks and buy a USB jack
ben
Click to expand...
Click to collapse
I can't see any difference in these two. I've had this one for over a year and half. I used on the 8125, the 8525, and now the Tilt.
As far as a AAA ver a AA, since the voltage is the same between the two, then it is only a question of mAh capacity.

I have one thing to say if your coming into America with some home made electronics your going to be thrown in Jail ...

ripnetuk said:
Be careful taking any home built electronics on a plane in these days since 9/11.
A girl in USA got done for having a battery and LED on her t-shirt in an airport and wasnt even flying...
id be amazed if you were allowed to take a home-built circuit onto a plane, esp. in the USA
just saying
g
Click to expand...
Click to collapse
I've actually taken a suitcase full of half built circuit boards and electrical components as carry on (half finished school project). They didn't even raise an eyebrow. As long as it isn't connected to something that looks like a bomb, I don't think they care.

thanks, i surmised that based on some other devices i have. I'm not too concerned as the battery will never (hopefully) get critically low. I'd like to jsut keep the thing running for ~9 hours while running either GPS or a movie... I hate plane rides, and i need something to do to entertain myself. I'll see what the charger mentioned above can put out. I just ordered two, and we'll see what it looks like... I'll write a review when i have had time to play with it a bit.

I've had Archos portables for years and it also has a 5V input. A simple 4 cell pack using 2300-2900 NiHi AA batteries in series will easily power these devices for over 10 hours straight. What's nice is that you don't need any regulator at all, just don't use alkaline batteries in it as you'll be at 6V. I carry a very small 4-cell charger to charge the cells. Works great for long travel. I took an iPod version with battery fuel gague, stripped out their power supply and just kept the power switch and fuel gague circuit. This costs more but works really well and looks good too.

So this thread is of some use to others: here are some data that i collected regarding current draw:
Locked with the screen off, no apps running: 1-4ma
TCMP playing a movie fullscreen: never more than 350ma
TCMP Playing in background with tomtom navigator 6 running: 416ma
all done in flight mode with the backlight set to the middle.

Can you you do a worst case test for current draw?
Turn on GPS, bluetooth, Wifi, backlight max and not flight mode.

Does anybody else get super SLOW performance when charging?

Whenver I'm charging via wall charger or USB my captivate is super duper SLOOOWWW. It takes forever to switch screens, the keyboard doesn't function correctly, and my bluetooth won't sync. As soon as I disconnect the charge everything is back to normal.
Any ideas?

No replies? Sooo...Am I the ONLY one?

be patient for answers here
Ive noticed it charges slowly but I have not noticed it being slow while charging.
The theoretical output of the charger is .7 amps, and thats not very much in the smartphone world these days. When I am using it and it is plugged in, it charges roughly a percent every eight minutes. The .7 amps must be just enough to cover the phone being on and in use.
I am currently looking around for chargers in the 1 amp range. My old tilt 2 charger works great for that and i definitely saw a charge time improvement. I would love to have one with a greater than 1amp output but I dont think you can find them anywhere

Are you running SetCPU with set profiles ?
If Yes : that is the problem , adjust profile.
If Not : must be something else, not a common behavior.

I read this on another forum but someone mentioned changing the default usb setting from Kies to something something else may help.
Sent from my Galaxy S using XDA App

matthewpapa said:
I am currently looking around for chargers in the 1 amp range. My old tilt 2 charger works great for that and i definitely saw a charge time improvement. I would love to have one with a greater than 1amp output but I dont think you can find them anywhere
Click to expand...
Click to collapse
Ordered these the other day. Just combine them with a USB cable.
http://www.monoprice.com/products/product.asp?c_id=108&cp_id=10826&cs_id=1082602&p_id=3523&seq=1&format=2
http://www.monoprice.com/products/product.asp?c_id=103&cp_id=10311&cs_id=1031106&p_id=6767&seq=1&format=2

ladiesgod said:
No replies? Sooo...Am I the ONLY one?
Click to expand...
Click to collapse
No, mine doesnt do that. It runs the same whether its plugged into the wall charger or not.

derek4484 said:
No, mine doesnt do that. It runs the same whether its plugged into the wall charger or not.
Click to expand...
Click to collapse
same, get your phone replaced whole you still can

Jack45 said:
Ordered these the other day. Just combine them with a USB cable.
http://www.monoprice.com/products/product.asp?c_id=108&cp_id=10826&cs_id=1082602&p_id=3523&seq=1&format=2
http://www.monoprice.com/products/product.asp?c_id=103&cp_id=10311&cs_id=1031106&p_id=6767&seq=1&format=2
Click to expand...
Click to collapse
if u had an iphone charger can we use that , that has 1A rating too ?

anilkuj said:
if u had an iphone charger can we use that , that has 1A rating too ?
Click to expand...
Click to collapse
As long as the output is 5 volts, you're o.k.

My captivate runs the same while charging but the actual process of charging the phone takes forever it seems. I've only had it a couple days now and I have to get used to killing some tasks while charging because I actually think the battery life was decreasing as it charged.
Incidentally, the display is the real killer on the battery...most tasks don't really eat as much battery life in comparison.

Recent Nokia chargers will work with a slight mod to the plug where it fits the phone,

After Pimping out my phone it works fine while charging now. Yea screen eats up like 82% of batteries resources...OUCH!

Just search for Motorola P513 on Amazon. Rapid rate car charger! And, belive me, it's perfect fit! Now on sale for $5.85 (was $29.99).
Sent from my SAMSUNG-SGH-I897 using XDA App

I agree with the device charging slowly (but then again it doesn't help that I'm using it while it charges) but I have not had any performance issues.
Sent from my Samsung Galaxy S

for those of you who have a old iphone/ipod touch charger block, use that instead.
its rated for 5V/1A output, higher than the 5V/.7A output on the default samsung charging block.
that should charge the phone much faster

I have the same issue with charging, no matter what charger I use (iPhone, Tilt, USB), it's all VERY painfully slow. I've been as high as 1% per 6 minutes (rare - when using Nokia charger (1.2A I believe) to 1% per 13 minutes via USB.
I'm thinking it might be something internal to the actual phone. The iPhone didn't take this long even with USB charging through a computer or LCD monitor. Heck, the iPhone on average was 90 seconds per 1% of battery. I could have a nearly dead phone and be fully charged and ready in less than an hour and a half.
Anyone else think the same?

yea i think it might be something related to the phone indeed. this is, in my opinion, the biggest problem. i'm always on the go and i depend on my phone so much that if it doesn't charge fast enough i'm screwed.
let me make a post in the galaxy s forum and see if there's battery charging problems

Everyone else is charging.

littleasian said:
yea i think it might be something related to the phone indeed. this is, in my opinion, the biggest problem. i'm always on the go and i depend on my phone so much that if it doesn't charge fast enough i'm screwed.
let me make a post in the galaxy s forum and see if there's battery charging problems
Click to expand...
Click to collapse
which thread is that? I'm curious to track that one as well. I have gotten 4 other people to purchase the Captivate from the iPhone and we are all on the same boat..even with a 1.2A charger from my N97 (which only lasted 3 weeks with me...but can't wait for the N8), it takes about 4 hours to charge the battery...something's wrong there. It shouldn't take less to drain the battery than to charge it!

Solar back?

The design of the Streak seems like it could fairly easily take a back with a solar charger built in. Has anyone seen something like that?
Sent from my Dell Streak using XDA App

I think you would have difficulty finding a solar panel small enough with enough power output to do any good, not to mention having to leave it out in the heat of the sun while it charged.

Good point.
Buts not about replacing the mains charger but adding a little charge while out and about. Prob get a few days extra with solar panel. Unless you forget to take it out of your pocket
I think its a great idea. Maybe a battery with built in cover/solar panel
Sent from my Dell Streak using Tapatalk

does sounds like a good idea you can already get solar phone chargers but one attached to the phone would be great!!

you'd probably be better off looking for one of those solar power batteries that could charge an internal battery, then use it to charge the streak once the charge is up

Solar chargers work under indoor lighting also. My watch never dies on me and I'm indoors all the time. As long as you left the unit face down, it would trickle charge and maybe get enough extra time to never worry about dying out before you get home to your charger.

mid_life_crisis said:
Solar chargers work under indoor lighting also. My watch never dies on me and I'm indoors all the time. As long as you left the unit face down, it would trickle charge and maybe get enough extra time to never worry about dying out before you get home to your charger.
Click to expand...
Click to collapse
Problem is the Streak needs an awful lot more power than a watch. I see this panel on eBay http://www.ebay.com.au/itm/5V-150mA...895?pt=LH_DefaultDomain_0&hash=item4aacb1b777 which they say is 5v 150ma and it's 110mm x 56mm. This is roughly the size of the battery cover on the Streak, but you would need 7 times as much current to successfully charge it.

Troute said:
Problem is the Streak needs an awful lot more power than a watch. I see this panel on eBay http://www.ebay.com.au/itm/5V-150mA...895?pt=LH_DefaultDomain_0&hash=item4aacb1b777 which they say is 5v 150ma and it's 110mm x 56mm. This is roughly the size of the battery cover on the Streak, but you would need 7 times as much current to successfully charge it.
Click to expand...
Click to collapse
What if you combined this with the battery idea? So it would charge a second smaller battery, and when your battery was running low you flipped a switch to charge the streak from that? It would start to get bulky but might work?

not a new idea or device... see:
http://www.powerbee.co.uk/Solar-Phone-Chargers/Powerpod-Solar-Phone-Charger/p-84-355/
http://www.amazon.com/Premium-Solar-Charger-Built-Windshield/dp/B00449U3K0/ref=pd_cp_e_0
http://www.ecoexpress.com/page-1440-ECO SHOPS-1101.htm
http://www.amazon.com/i-Sound-Portable-iPhone-Blackberry-Silver/dp/B00439G3WS/ref=pd_cp_e_2
etc...

I bought two extra charging cables. One for the car, one for work and the original stays at home by my computer. Charging problem solved with nothing to lug around. This thing is big enough without toting around accessories.

Troute said:
Problem is the Streak needs an awful lot more power than a watch. I see this panel on eBay http://www.ebay.com.au/itm/5V-150mA...895?pt=LH_DefaultDomain_0&hash=item4aacb1b777 which they say is 5v 150ma and it's 110mm x 56mm. This is roughly the size of the battery cover on the Streak, but you would need 7 times as much current to successfully charge it.
Click to expand...
Click to collapse
No you wouldn't, it would charge with only 150ma, it would just take about 10 hours for full charge, in reality, something like this would only slow battery drain on a "super"-phone like this.

That's my point - not to charge from dead, but to top up and maybe get an extra hour or more before searching for an outlet.
Sent from my Dell Streak using XDA App

Aren't there serious problems with trying to trickle charge Lithium ION cells? As in, it kills them pretty quickly?
Isn't that why loads of modern kit has normal and fast charge modes, depending on what the available amperage on the cable is, and why some things, e.g. iPad, cannot charge at all from some USB ports?

As far as I know the only thing you don't want to do to a lithium battery is let it discharge fully, that shortens the battery life considerably.

Troute said:
As far as I know the only thing you don't want to do to a lithium battery is let it discharge fully, that shortens the battery life considerably.
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This didn't make sense to me, so I Googled. It is correct. I found this quote on a battery research site.
"Similar to a mechanical device that wears out faster with heavy use, so also does the depth of discharge (DoD) determine the cycle count. The smaller the depth of discharge, the longer the battery will last. If at all possible, avoid frequent full discharges and charge more often between uses. If full discharges cannot be avoided, try utilizing a larger battery. Partial discharge on Li-ion is fine; there is no memory and the battery does not need periodic full discharge cycles other than to calibrate the fuel gauge on a smart battery."
There was a chart that indicated that discharging only to 50% as opposed to until it dies can triple the battery life.
The moral is to have it on a charger whenever possible.

Well, according to http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
A continuous trickle charge would cause plating of metallic lithium, and this could compromise safety.
Click to expand...
Click to collapse
It is referring to when they are fully charged, but you would definitely have to cope with that situation, since that's a recipe for exploding batteries, otherwise

mid_life_crisis said:
The moral is to have it on a charger whenever possible.
Click to expand...
Click to collapse
After reading that article, this statement I made previously is clearly wrong.
What I gathered from the article is that for max lifespan of the battery, a couple of things should be done:
1) Do not completely discharge.
2) Turn the phone off while charging.
Of course with the Streak it would be impractical to do both of these, as it would mean turning your phone off for an hour or so in the middle of the day.
Oh yeah, and hope like hell that Dell did a good job designing the charger circuitry.

p_razzi said:
The design of the Streak seems like it could fairly easily take a back with a solar charger built in. Has anyone seen something like that?
Sent from my Dell Streak using XDA App
Click to expand...
Click to collapse
http://batteryuniversity.com/learn/article/charging_with_solar_and_turbine

Its still a great idea, free energy, even if its only 10mins
Sent from my Dell Streak using Tapatalk

A seperate solar charger might be useful but there's another potential problem with a built in one, that is having to leave the phone lying in the sun for long periods of time, never a good idea.

QI Wireless Charging

We heard rumors that it'd have wireless charging and now the Motorola Site doesn't list it on the Droid Turbo Spec Site.
:crying:

Juliann826 said:
We heard rumors that it'd have wireless charging and now the Motorola Site doesn't list it on the Droid Turbo Spec Site.
:crying:
Click to expand...
Click to collapse
It would be nice. I have an N7 but haven't bought a charging pad yet because I didn't feel I'd get enough use from it. My N7 battery easily lasts me a full day and I just throw it on the charger at night. No big deal.
I use a Moto X right now and tether my N7 to it on my daily bus commute (~2 hours each day) and I usually need to give the battery some juice before I leave work to have enough for tether on the ride home and the remainder of the evening.
When I get the Turbo, it will easily last a full day. I don't think I'd ever really need the full two days of battery life, but it would be great for long days. My Moto X right now can't make it through an entire day with my usage. I know I'm probably above the bar in SoT (usually 3.5-4h), but I average about 13h, according to GSAM over the last 8 months. Could use a nice big battery to keep me going for 18-20 hours.

I guess it does have wireless charging...
The new DROID comes with a turbo charging feature so when you’re low on battery, a 15 minute charge can get you up to 8 hours of use. DROID Turbo comes with the Motorola turbo power charger in the box at no additional cost. And for added convenience, the new DROID is wireless charging capable.
Click to expand...
Click to collapse
Source: http://www.verizonwireless.com/news/article/2014/10/a-new-droid-experience-arrives-in-48-hours.html (in the "Endurance" section)

fury683 said:
I guess it does have wireless charging...
Source: http://www.verizonwireless.com/news/article/2014/10/a-new-droid-experience-arrives-in-48-hours.html (in the "Endurance" section)
Click to expand...
Click to collapse
what does wireless charging capable mean? does that mean it will have QI built in?

Juliann826 said:
what does wireless charging capable mean? does that mean it will have QI built in?
Click to expand...
Click to collapse
I would say yes.

A tech reviewer from pocketnow says it does have qi wireless charging
Sent from my Nexus 5 using XDA Free mobile app

can anybody confirm this?

Got the phone in hand. Charging with Samsung Qi pad just fine.

ravikumars said:
Got the phone in hand. Charging with Samsung Qi pad just fine.
Click to expand...
Click to collapse
Awesome..thanks for that

Semi-related.. Can anyone suggest a nice charging pad? I've looked at them for my N7 before and the prices seem to range pretty widely. I understand they charge pretty slowly.. but are they all the same for speed? Does the device need to be perfectly aligned in order to charge? Can I charge two devices at once (N7 and Turbo)?
I'm thinking I'll throw a pad on my desk and one at home, either in the living room (coffee table/end table) or bedside table.

There are some features of a phone that you appreciate more when you have them than you do when you read about them. An example might be high speed charging, their are a few technologies out there for this but the bottom line is when you have it you really come to like it. Its very nice when you have forgotten to charge your phone and you suddenly decide to go out to be able to get a charge on it that will see you through in the time it takes for a quick shower. When it was new and I first read about this it sounded good but no big deal, I usually make it through the day fine and charge over night. Now that I've had it though I really like it.
This is kind of a long way to get around to it but wireless charging is the same way. Its very nice to simply have the pad on the night stand or wherever you may put it and drop your phone on it without having to plug it in. It seems like nothing much but once you get used to it having to plug in seems like a bit of a hoop jump. One benefit of wireless charging that often gets missed is port damage, I have had more than one phone in the household that met its demise by tweaking the micro usb slot so that it either wouldn't charge or couldn't transfer data or both. My understanding is we will still have to plug in to get high speed charging but the ability to do both if we want is a very good thing in my mind.

krabman said:
There are some features of a phone that you appreciate more when you have them than you do when you read about them. An example might be high speed charging, their are a few technologies out there for this but the bottom line is when you have it you really come to like it. Its very nice when you have forgotten to charge your phone and you suddenly decide to go out to be able to get a charge on it that will see you through in the time it takes for a quick shower. When it was new and I first read about this it sounded good but no big deal, I usually make it through the day fine and charge over night. Now that I've had it though I really like it.
This is kind of a long way to get around to it but wireless charging is the same way. Its very nice to simply have the pad on the night stand or wherever you may put it and drop your phone on it without having to plug it in. It seems like nothing much but once you get used to it having to plug in seems like a bit of a hoop jump. One benefit of wireless charging that often gets missed is port damage, I have had more than one phone in the household that met its demise by tweaking the micro usb slot so that it either wouldn't charge or couldn't transfer data or both. My understanding is we will still have to plug in to get high speed charging but the ability to do both if we want is a very good thing in my mind.
Click to expand...
Click to collapse
Good points. I held off on a pad for my N7 because the battery easily lasts me through the day, two if needed (I usually charge it every night, though). Even though the Turbo probably wouldn't need to be topped off during the day like my Moto X would benefit from, it would be nice to have the option. I agree on the Turbo charger too. Great in a pinch if you are at an airport or something and just need some quick juice for a flight or something.

3.9Ah batt's gonna take a long time to charge with a 700mA limit though.
Should be OK overnight. Then again if it's only discharged to 60% when you start it shouldn't be hateful.

Yeah, wireless charging works best where/when you are going to set it down for a while such as over night or when you place the charger where you set your phone in the evening. I used both, one on the nightstand and one on the end table by my chair. In the latter case it is quite convenient since you can answer a text or what have you and simply set it right back down and its charging again. This is why I think its a great feature to have both wireless and high speed by whatever name, they should complement each other well. I say should because I've had both but not on the same phone, I'm really fairly stoked about this handset for this and other reasons.

Samsung Wireless Charging Pack Review

Hi Guys,
This is going to be my first review. figured it might help some people decide whether to buy Samsungs Wireless Charging Pack. For those in the Philippines, i got mine at the samsung official store in SM Aura, BGC Taguig
Just got it a few hours ago so this will just be my initial review with photos, ill give a whole day of use review tomorrow when ive had the chance to use it fully.
Findings:
1.) The case is huge, actual measurement with the phone in is 1.8cm or 0.7 inches. It really feels like a brick
2.) It makes the phone heavy. I dont have a way to measure it exactly but an estimate would be a can of coke (the drink).
3.) its not "Fast Charging" feels like the speed of a normal wireless charger, about an hour for 25%. but then its a phone case with a battery so its not much of a bother since there are no cables.
4.) Wireless charging doesnt work with the case on. the case will charge your phone wirelessly, but if you put it on top of your "desk/normal wireless charger" with the case on, it wont charge your phone. case is too thick
5.) not sure if this is safe or if it might damage the phone, but if i plug the case to charge with the phone attached to it, it charges both. the case charges and it charges the phone wirelessly at the same time.
6.) as can be seen on the photo, there is no "over lap" or "lip" when the phone is in the case. if your phone drops screen first, there is no protection
so basically thats all i can say for now. Tom ill try to see if it can charge the phone to full from empty with one charge.
Im a heavy phone user, the note 5 if unplugged at 7am only lasts me till 2pm. so this will help alot. i can deal with the increased size and weight as long as my phone makes it to bedtime.
let me know if you have any questions, ill try to answer them.

more photos

Reserved (for full day of use review)

mtsingson said:
more photos
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thanks for posting pics... been looking for this device.

Where did you get it? I have been looking for this.

How efficient is wireless charging? for example, if the battery pack is 3400MAH and the internal battery is 3000, can the pack charge the phone from 0 and still have some left over? or does it only manage 1 full charge (a waste of 400MAH) or can it only charge up to 90%... etc.

I got it from an Official Samsung store here in the Philippines.

Cant answer this right now because i think i got a faulty unit. Ill return for an exchage over the weekend. Its only able to charge my phone from 10% - 50% before the battery pack goes empty.

mtsingson said:
Cant answer this right now because i think i got a faulty unit. Ill return for an exchage over the weekend. Its only able to charge my phone from 10% - 50% before the battery pack goes empty.
Click to expand...
Click to collapse
Yikes, I hope the replacement one charges better than that.
Sent from my SAMSUNG-SM-N920A using Tapatalk

I've been thinking on this and I almost think it would be better to have a separate battery that includes a Qi pad, as opposed to one built into the case.
Built into the case, you always have to tote it around when it might not be useful to you.
you can't use any other case
you couldn't opt for a wired connection, assuming that wired is more energy efficient than wireless.
I'm all about convergence and efficiency, but this doesn't seem to be as beneficial as it ought to be.
In my opinion, a separate battery pack with a qi receiver and fast charger, so it could charge on your pad (or cable) , and then put your phone on top of that, so the phone could charge at the same time as the batter pack.
------ Phone in its case ----------
------ Spare battery ------------
------ Qi Fast charger -----------
The have a magnetic connection between the phone in your own case and the battery pack, so for those that keep their phone loose in a purse or bag or pocket could use it without cables or straps keeping them together.

Hi, magkano bili nyo? Thanks

Toniville said:
Hi, magkano bili nyo? Thanks
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Php 3,200.00

So did you get the replacement? Any different results on the charge %?

Hi. Yes i did get a replacement. Seems to charge faster also. Well 3 hours from 0 - 80. Im guessing it might be able to charge up to 100% but i use the phone while its charging which could account for the 20%.

I find myself using the fast charging battery pack more. Maybe its just personal preference. But the "wireless pack case" is just too heavy and takes too long to charge that its become cumbersome. While the fast charger battery pack only takes an hour and its done charging

mtsingson said:
Hi. Yes i did get a replacement. Seems to charge faster also. Well 3 hours from 0 - 80. Im guessing it might be able to charge up to 100% but i use the phone while its charging which could account for the 20%.
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What did you need to replace your wireless charging pack? Do you need a reciept?