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Interesting. AC charging better then USB??

Hrm.. This is interesting.. I used to always charge my G1 with AC power. However past couple days, I was lazy and used my laptop USB to charge it. I noticed those days however the battery life was HORRIBLE! I mean I couldnt even get past lets say 9 hours without the battery being at 15-30% and this is without doing anything major. On AC I always got home with 50%.
Has anyone else noticed this? I am using the power profiler mode, so unless something goes out of whack on USB power mode, which I dont see why it would...
(Also I did turn off phone and back on to reset anything just in case) but its just a interesting thing that it seems USB charges suck?

Yes I noticed the same thing, used the computer USB to charge and only lasted about 6 hours of the day. I use the Wall charger and get about 9 hours consistantly. Not sure why but I have noticed this several times........
Mark

Every Tmobile rep I've talked to always say the AC charger does a better job of charging the phone.

Hrm, is this info on a G1 Wiki yet? Would be good info to pass around. My logicial guess is that USB charging can only allow the voltage on the battery to charge to "x" max. While AC power being stronger could bring the battery up more. I cant say thats fully the case.. but since the USB cannot supply the power max a AC could.. its possible.

I've got and idea for a little test, would be helpful to see a lot of different users results as well..
Get Battery Graph, run your phone dead, plug in usb charger and graph. then take a screenshot of the overall charge time, clear graph
Run it dead again, plug in AC charger #1 and and repeat
Repeat the process for each additional recharging apparatus
The reason I mention additional apparatuses is because I think my car's DC charger does better than both ac and usb (tho this will be hard to get a full accurate graph of) , also I use my gf's moto charger from time to time (i know bad mojo)..
This will probably take a few days as charging will take place at sleep time for me but this should give us an over all view of how things are working if we all get pretty consistent results..

Mysticales said:
Hrm.. This is interesting.. I used to always charge my G1 with AC power. However past couple days, I was lazy and used my laptop USB to charge it. I noticed those days however the battery life was HORRIBLE! I mean I couldnt even get past lets say 9 hours without the battery being at 15-30% and this is without doing anything major. On AC I always got home with 50%.
Has anyone else noticed this? I am using the power profiler mode, so unless something goes out of whack on USB power mode, which I dont see why it would...
(Also I did turn off phone and back on to reset anything just in case) but its just a interesting thing that it seems USB charges suck?
Click to expand...
Click to collapse
I've had 4 different miniUSB charging phones and all of them have had this same behavior. I'm sure that the voltage coming through the USB isn't as strong as AC.

I have the same issue too...!!!

No offense.. but EVERY phone charges better w/AC versus USB .. This is not just a G1 issue .... lol

jamaicansolja said:
No offense.. but EVERY phone charges better w/AC versus USB .. This is not just a G1 issue .... lol
Click to expand...
Click to collapse
Indeed.
Also, USB charges at 500 mAh, while the AC gives double if i remember correctly.

jamaicansolja said:
No offense.. but EVERY phone charges better w/AC versus USB .. This is not just a G1 issue .... lol
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Click to collapse
Im wondering, if I use my usb while plugged into my laptop (for tether wifi app) will this hamper my battery life? I have the extended battery (2200mah) and I get far better life from it and to be honest I like the bigger size because the g1 felt too much like a toy to me before.
What do you guys think will this mess it up? I dont have wifi at home so the tetherwifi app is the only way I have net on my laptop unless I go somewhere where they have wifi. Cursed neighrbors and there password protected networks!

Might using a USB stepup voltage converter help? I've used it to charge my Nokia phone on usb in the past so it would reach the battery is full message.
The argument is usually that laptop usb don't output adequate voltage.
Its cheap and works for me on the nokia phone, Haven't tried it on the G1 yet though, can anyone find the ac charger's output info?
http://www.dealextreme.com/details.dx/sku.2649

yea this goes for alot of devices.. my ipod/psp charge pretty slow compared to wall outlet, however i didnt really see strength difference.. never tried USB charging my g1

I think it's worth noting I have the G1, My girlfriend has a HTC Touch(Elfin)
Both use Mini-USB Charging, both have 5V 1A Batteries (can't remember mA rating though)
Through a wall charger, my phone seems to charge quicker, but I get no longer out of it, the same behaviour is exhibited with the Touch. Both USB and the Wall charger are rated at 5V (It would/coul destroy componants methinks if it was any higher).
USB's Specifications say that unless a device has special permissions, It can only draw 500mA, with a maximum of 1000mA and a very rare (as in, one maybe two things use it) 2000mA.
Also, I have a custom made USB charger, that takes 3 AAA batteries (1.5x3 = 4.5)
It causes the phones internal battery to mess up, but does actually charge it (just a lot longer than other methods). It's more of an extended battery however, as it says it is charging, yet the battery life slowly degrades.

It's simple really and it has already been explained.
The USB port on a computer is limited to 500mA for most devices where as AC chargers like
The G1's can rpovide up to 1 Amp, even more/less depending on the chargers.
It doesn't depend on the voltage but on the current delivered. Less current equals
More time to charge and viceversa,
There is no myth.

Turn off USB Charging for Omnia (solved)

Hi all, there is a way to turn off the charging function when using USB ,
1-install FdcSoft TaskMgr from here
dotfred.net/TM/FdcSoft_TaskMgrv3.3_WM6.5.cab
2-go to Devices--->$device\BAT1(BAT1 and stop this service
3-thats All
To Use charge restart this service

hey thx for the tips! but after stop the service my o2 keep saying batt low...

Is there any reason why we would want to turn off this service?

I heard that it keeps your battery in good shape

peepe1302 said:
I heard that it keeps your battery in good shape
Click to expand...
Click to collapse
I'm not so sure about that... I've always charged both my O2 and the O1 before through usb and the battery has always been fine.
Actually, I even noticed that charging through usb takes longer but once it's charged it also lasts longer (this happened on the O1, haven't made the same comparison on the O2 yet)
Dunno if plugging / unplugging the usb cable too frequently can have some sort of ill effect on the battery life, but it's not like we're plugging it every 10 minutes is it?
Never had a battery problem with a "normal" usb usage and usb charging enabled so far...

Yes but not anymore
peepe1302 said:
I heard that it keeps your battery in good shape
Click to expand...
Click to collapse
It's always good to drink all the juice so the battery don't develop a offline or fake "memory".
Also the multi cell assembly insde the battery praticly don't allow batery memory anymore.
Thx for the reference

Regarding battery life
Hi,
Actually, for a battery it depletes it's life every second. There is no way of preventing this But we can extend the service life. For example the most basic rules:
1-Do not charge your battery unless it is almost empty
2-Avoid deep discharging (this is not possible with a PDA coz it has an early shut down routine)
3-Do not overcharge the battery (also this not possible, coz there is a voltage limiter by hardware)
4-Do not leave your battery in a high temperature environment (for example in a car during summer, we are using chemical-reaction batteries)
the rest is do not puncture, do not short circuit boola boola boola
ok, finally while using your PDA with a USB charging interface, it should stop charging when the battery is full (Even my mother's old nokia doing this)
Plus, how much it costs for a new battery? only few bucks.. ehh.. (not for an original one ofcourse)
PDA batteries, in most cases, are 3.7volts (charging voltage is 5volts by USB) and 1200 to 1500mAh (for the ones who doesnt know what is "mAh": it is the capacity of the battery and it means if you pull for example for a 1300mAh battery, 1300 "mili ampers per hour" it will deplete. Some of my friends they are using 3.7V 2000mAh batteries while their PDAs supplied with 1230mAh batteries, thus, standby time goes up to a week. They are not using their originals ofcourse. I dont understand why manufacturers are not supplying PDAs with these kind of batteries by standart. Even a chinese made battery can be so efficient. (I am using a chinese one, my original battery is 1300mAh, i could find 1500mAh same battery)
I spoke to my friends, they are not charging their 2000mAh batteries via USB/charger while battery is in the phone. Because there is an internal electrical resistance of every battery. May be PDA's battery charging circuit get damaged! Because of this if you plan to use a high capacity battery, charge it seperately by using another charging equipment.
Finally when you want to sell out your PDA install the original battery (which you have never used before hehe ) and get a higher price

This might be some really big idiotic question, but what if the service is down and the battery drains and the phone shuts itself off, will it turn on by connecting the charger to the phone?
I ask this because with the service off even the real phone charger wont work (at least while it is on)!

houssam10001 said:
Hi all, there is a way to turn off the charging function when using USB ,
1-install FdcSoft TaskMgr from here
dotfred.net/TM/FdcSoft_TaskMgrv3.3_WM6.5.cab
2-go to Devices--->$device\BAT1(BAT1 and stop this service
3-thats All
To Use charge restart this service
Click to expand...
Click to collapse
I just did what you said, and now the device\BAT1(BAT1 completely disappear! How am i supose to turn it on again now?
And no, i obviously didn't delect it, i just stoped the service and it vanished from the damn list!

im very interested in this but how can you restart the charging service?

Fix for battery drain when connected to PC

I'm not sure if this has been noted elsewhere but I couldn't find it if it was.
I ran into the problem yesterday in which my HD2 running WP7 would drain the battery if connected to the PC USB port instead of charging it. This was the first time my phone had done this and restarting the phone and switching USB ports did not result in any difference.
On a whim I decided to look in my device manager and there was an unknown device listed there. I selected it and had is search for and install the drivers and now it listed as USB Composite Device. Once that was done, the phone charged as normal.

jaxjaguar said:
I'm not sure if this has been noted elsewhere but I couldn't find it if it was.
I ran into the problem yesterday in which my HD2 running WP7 would drain the battery if connected to the PC USB port instead of charging it. This was the first time my phone had done this and restarting the phone and switching USB ports did not result in any difference.
On a whim I decided to look in my device manager and there was an unknown device listed there. I selected it and had is search for and install the drivers and now it listed as USB Composite Device. Once that was done, the phone charged as normal.
Click to expand...
Click to collapse
My phone's listed as Windows Phone USB, which i think is cool, but stll not enough!
Charging takes hours...

stealth21 said:
My phone's listed as Windows Phone USB, which i think is cool, but stll not enough!
Charging takes hours...
Click to expand...
Click to collapse
that depends on the charging source.
if you use a laptop you will only be getting 200-300mA of current, a normal PC USB port will give you around 500mA, the wall charger will give you 1A (1000mA)
Now its not as simple as that as the device uses some of that power for working as we cant charge whilst off, so knock 100mA off it if the screen is on, on standby it'll be minimal so forget that.
1A charger should get you charged in ~1.5 hours
PC will double it to ~2.5 hours, some PCs do have 1000mA ports so say ~1.5-2.5 hours)
laptop could be ~4-6 hours (some laptops do have 500mA ports so say ~2.5-6 hours)
note you can get 2A quick chargers (~35min-45min, but i would be very careful with those an can ultimately lead to a shorter life span of the battery

dazza9075 said:
that depends on the charging source.
if you use a laptop you will only be getting 200-300mA of current, a normal PC USB port will give you around 500mA, the wall charger will give you 1A (1000mA)
Now its not as simple as that as the device uses some of that power for working as we cant charge whilst off, so knock 100mA off it if the screen is on, on standby it'll be minimal so forget that.
1A charger should get you charged in ~1.5 hours
PC will double it to ~2.5 hours, some PCs do have 1000mA ports so say ~1.5-2.5 hours)
laptop could be ~4-6 hours (some laptops do have 500mA ports so say ~2.5-6 hours)
note you can get 2A quick chargers (~35min-45min, but i would be very careful with those an can ultimately lead to a shorter life span of the battery
Click to expand...
Click to collapse
Thanks for quick reply, i tried computer it took so long..
Although I'm using wall charger nowadays it takes more then 3-4 hours. Theres something wrong, When i had winmo6.5 the device was fully charged in 2.5 hours...

stealth21 said:
Thanks for quick reply, i tried computer it took so long..
Although I'm using wall charger nowadays it takes more then 3-4 hours. Theres something wrong, When i had winmo6.5 the device was fully charged in 2.5 hours...
Click to expand...
Click to collapse
yeah that doesnt sound right, the battery its self is only 1230mA, the wall charger is 1000mA on standby within WP it should draw any more than 10mA but lets say 100mA on the extreme side, that gives you a net gain of 900mA every hour which is like 1 hour 20min.
I assume its the 1A charger that came with the device? check the adaptor and see what the current output is listed as
according to your figure of 3 hour charge time ( again, assuming from flat) that means its dumping around 400mA in to the battery an hour. That means one of two things
Firstly that your device is using an incredible 600mAh, that would be toasty and is unlikely!
Secondly, the charger isnt putting out 1000mA, more likely 500mA or 300mA
I suppose there is a third option, something gone wrong in the device its self, i cant think why it would tho, try running it near flat, restart it, make a note of the battery level then restarting again (you restart twice because WP on the HD2 has battery reporting issues) hold down the VOL down button on reboot which will take you in to the bootloader.
plug in the charger and leave for half hour, go back to windows and look at battery (remember to set the clock properly again!)
if the charger is 500mA it will have only charged to just less than 1/3
if its 1A it will be just less than 2/3 maybe half
the point of doing it in the bootloader is that you rule out WP and its dodgy drivers and will help to narrow down the problem

Check charge current in Battery tool apps. Battery current - positive figures are charging current.negative discharge.
To get high charging current(more than 200 ma) from power suply(wall or car) usb data lines must be shorted(fast charging mode). On ploperly made power supplies usb data shorted and phone can suck high current(700-800ma normaly not more).
Even if on charger written 1000ma it doesn't mean phone wil take all. what is written on charger - it is max allowed.

zcdg said:
Check charge current in Battery tool apps. Battery current - positive figures are charging current.negative discharge.
To get high charging current(more than 200 ma) from power suply(wall or car) usb data lines must be shorted(fast charging mode). On ploperly made power supplies usb data shorted and phone can suck high current(700-800ma normaly not more).
Even if on charger written 1000ma it doesn't mean phone wil take all. what is written on charger - it is max allowed.
Click to expand...
Click to collapse
Indeed, although from my own tests it draws around 900mA, there is a large number of variables including power fluctuations on a dirty line regulated supplies, state of the battery, etc, its safe to play with estimates I think in this case without overcomplicating things, but the fact remains, on a wall charger that comes with the HD2 it should fully charge in around 1.5 hours unless it is not the same charger or something is wrong with it.

dazza9075 said:
Indeed, although from my own tests it draws around 900mA, there is a large number of variables including power fluctuations on a dirty line regulated supplies, state of the battery, etc, its safe to play with estimates I think in this case without overcomplicating things, but the fact remains, on a wall charger that comes with the HD2 it should fully charge in around 1.5 hours unless it is not the same charger or something is wrong with it.
Click to expand...
Click to collapse
yes, with correct wall or car charger it charges in about 1.5 hours from almost empty to full.

Extreme difference between charging on pc and charger

I can't remember if this has been happening before, but when I have the HD2 conncted to a computer it takes forever to charge. Maybe 1 % per 10 or 15 minutes! Charging on the regular charger is so many times faster. Mybe 1 % per minute or so. This can't be right, can it? I have the same problem on my HD2 and my wife's HD2. They both are using the same ROM (ironically it's the Energy Max Sense ROM...). Is it possible that the ROm is the culprit? They both have quite new original batteries.

USB port supplies less than half the "oomph" of the wall charger. USB charging will run about 300mAh while wall charger will supply about 800mAh
Also, older PC power supplies and older USB 1 sockets may provide even less, depending on what other devices are in/on your machine drawing power.

Yes, thanks. I know that. But that shouldn't accord for an at least 10 time slower charge. And I know that they weren't like this before, but I can't remember how long before. And I have no idea if it can be the radio ROM, the regular ROM or what.

I use energy ROM but older 23699 & see no issues on USB charge rate but yours does seem rather long, what status is the device in when USB connected & is screen off !

Also, keep in mind that the rate of charging goes down as the battery level approaches 100%. So maybe u r comparing charging rates measured over different regions of the curve, i.e. observing the rate with usb charging when the battery is around 90% will be drastically different from the reading observed with wall charging when the battery is at 10%.
Sent from my HD2

Mastiff said:
I can't remember if this has been happening before, but when I have the HD2 conncted to a computer it takes forever to charge. Maybe 1 % per 10 or 15 minutes! Charging on the regular charger is so many times faster. Mybe 1 % per minute or so. This can't be right, can it? I have the same problem on my HD2 and my wife's HD2. They both are using the same ROM (ironically it's the Energy Max Sense ROM...). Is it possible that the ROm is the culprit? They both have quite new original batteries.
Click to expand...
Click to collapse
if youre running windows 6.5 the quickest way is to turn the phone off then charge
or get a cheap chinese battery charger 6 dollars and a spare chinese battery extended around 10 bucks with 2400 mah double the juice i got a couple of those i never charge my phone anymore lol

Mister B, I have tried with the phone both on and off. But I really need to keep the phone on because I get a lot of work mail and SMS that I need to keep an eye on. Also I don't think I had problems with earlier versions of Energy, I may have to try to go back and see if it's the ROM.
ASCIIker, no. The problem isn't the final bit of the charge. If I put it in when it's around 30 % it almost won't charge at all. If anything it looks like the phone is getting a better charge when it's close to 100 %.
Casemandan, I have a charger like that you describe, but I do a lot of driving with TomTom, and even though I did change battery on the run yesterday it's not something I would recommend...
Btw I have the same problem in the car, with a combined charger/battery charger cradle that I have put there. The red/orange charging light is on, but it goes slowly down instead of charging. But I'm wondering if that is because the car charger is connected to a mini USB in the cradle, not to the micro USB. I have to try that.

I don't have mine connected for much time via USB to PC but when do & have left on charge rate seems acceptable, could be ROM as I found a few issues with newer builds.
As for car charger the low rate will be down to the power adaptor unit being recognised as USB charge not AC charge.
If the Power adaptor you are using can feed 800mA<>1000mA then modding it by bridging data leads so handset goes to AC charging rate is the way forward. Use tbattery to see what current charge mode is.
You may be able to buy car charger already set for AC charge (have a browse in HD2 accessories forum) but I use an old USB 1000mA Ericsson adaptor I bridged for AC charge mode.
Like you say testing charge direct in car is a good idea as many of the phone/battery charger cradles output pathetic charge current.

Well, it's not the ROM. I tried an original ROM and had the same problems. I need to see if there is something wrong with my cradle. I do have a charger that should do what you describe, but when it's plugged into the cradle in the car it doesn't. I'll try to connect it to the micro USB instead of the mini USB and see if that matters.

roms for fast charging

hey guys i bought my niece a 2012 nexus 7 it has the axus charge with different usb cable but it charge so slow
i was wondering if there is a rom with better charging speed
i havent root and is wifi version

What does "so slow" mean? As in, how many minutes to change 10% in charge?
One thing you can do to troubleshoot things is to see how long it takes to charge the tablet when it is completely shut off. It should be pretty obvious that "the ROM" has absolutely nothing to do with that scenario. Wait till the tablet is discharged to about 10%, shut it off, and charge it for 90 minutes. If it is charging normally it will be close to 70% charge when you boot it back up.
If your tablet charges slowly in that case, then there is a problem with the charger, cable, or battery in the tablet - not the ROM. So, you should surely check that out first before you start worrying about software.
A nominal N7 (2012, WiFi) will charge from 5% to 100% in about 150 minutes: 2.5 hours. That's with a STOCK ROM. If you look at the battery capacity, that works out to a minimum 1.73A charging rate. (4.325 Amp-hours / 2.5 hours = 1.73 A). It's actually higher than that because a certain amount of charging current is "lost" to heat generation while charging.
The tab will ALWAYS charge slower than that if it is in use, especially if the screen is on and the owner is doing things like streaming data or playing games. If it is under heavy use, the tablet itself could easily dissipating 1.0 A of current... so in that case the 2.5 hour charging time would be over twice as long: over 5 hours.
The "fast charge" ROMs are not what you are thinking. "fast charge" there means "fast charge under conditions normally restricted to low currents when data transfer is taking place". If you are using a charge-only cable (such as the OEM charger and cable), the tablet should always be able to draw close to 2A of current with ANY ROM - there is no data connection present, and the tablet is not restricted in the current it can draw.
The ROMs don't really throttle the battery charging rate except in that very specific condition: when there is a data connection present. So, worrying about which ROM is installed really only applies to people that want to use a Y-cable and a live USB data connection (tethering or an OTG gadget attached) - for instance in car installs or maybe with data tethering via USB.
good luck

bftb0 said:
What does "so slow" mean? As in, how many minutes to change 10% in charge?
One thing you can do to troubleshoot things is to see how long it takes to charge the tablet when it is completely shut off. It should be pretty obvious that "the ROM" has absolutely nothing to do with that scenario. Wait till the tablet is discharged to about 10%, shut it off, and charge it for 90 minutes. If it is charging normally it will be close to 70% charge when you boot it back up.
If your tablet charges slowly in that case, then there is a problem with the charger, cable, or battery in the tablet - not the ROM. So, you should surely check that out first before you start worrying about software.
A nominal N7 (2012, WiFi) will charge from 5% to 100% in about 150 minutes: 2.5 hours. That's with a STOCK ROM. If you look at the battery capacity, that works out to a minimum 1.73A charging rate. (4.325 Amp-hours / 2.5 hours = 1.73 A). It's actually higher than that because a certain amount of charging current is "lost" to heat generation while charging.
The tab will ALWAYS charge slower than that if it is in use, especially if the screen is on and the owner is doing things like streaming data or playing games. If it is under heavy use, the tablet itself could easily dissipating 1.0 A of current... so in that case the 2.5 hour charging time would be over twice as long: over 5 hours.
The "fast charge" ROMs are not what you are thinking. "fast charge" there means "fast charge under conditions normally restricted to low currents when data transfer is taking place". If you are using a charge-only cable (such as the OEM charger and cable), the tablet should always be able to draw close to 2A of current with ANY ROM - there is no data connection present, and the tablet is not restricted in the current it can draw.
The ROMs don't really throttle the battery charging rate except in that very specific condition: when there is a data connection present. So, worrying about which ROM is installed really only applies to people that want to use a Y-cable and a live USB data connection (tethering or an OTG gadget attached) - for instance in car installs or maybe with data tethering via USB.
good luck
Click to expand...
Click to collapse
thanx man now i get it it won charge fast like the note 3
i was playing fifa 14 and didnt charge at all it was loosing power

mrej201 said:
hey guys i bought my niece a 2012 nexus 7 it has the axus charge with different usb cable but it charge so slow
i was wondering if there is a rom with better charging speed
i havent root and is wifi version
Click to expand...
Click to collapse
Get a better cable. I was using a third party cable on my Nexus 7 for a while and realized it was only charging about 10-15%/hr.. Changed the cable out for a better one and it charges at the normal rate now, 30%/hr or so.

Do check for loose connections for both battery connector and usb ribbon connector (under speakers). I’ve opened the back cover to check after slow charging problems and was solved by opening and clipping back the usb ribbon connector. Charging's back to normal now.
http://androidforums.com/nexus-7-20...esting-while-diagnosing-charging-trouble.html

Lim Wee Huat said:
Do check for loose connections for both battery connector and usb ribbon connector (under speakers). I’ve opened the back cover to check after slow charging problems and was solved by opening and clipping back the usb ribbon connector. Charging's back to normal now.
http://androidforums.com/nexus-7-20...esting-while-diagnosing-charging-trouble.html
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Click to collapse
thanx bro