okay i been looking for a charger that does not change the battery temp too much
the batter gets warm from the usb or ac charger
when i use Ni Mh in the charger vs a single use lithium (not lithium - ion/single use), the temp of the battery in the phone does not rise over 27 C throughout the whole charger
i charged from 20-100% with no temp change
there was major temp changer when i use the lithium batter with the portable charger
i am using an energizer portable usb charger
zeikos AA Ni Mh 3100 mah
i use a Joe cell charger it takes me 5 min to charge the AA
ill test for major temp change with use next
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I was wondering if standalone desktop battery charger for Universal good in recharging batteries or if they shorten the battery life. Thanks!
As long as the minimum specs for the universal are met by your charger it should not shorten your battery's life in any way.
Me and other people across the forum have used a moto razr charger to charge our universals, good results have been achieved, i have a charging/sync craddle bough out in ebay for few euros, it's branded "just mobile", it has its own battery charger (rated at 5V, 1A) and it works fine, although many people have had problems just with this charger.
One last thing, the real battery charger circuit is inside the pda, so provided that the battery charger is normal to good quality (5V +/- 10%, 500mA to 1A), you should not have any problems.
Bear in mind however that the battery can 'sk' for up to 1A if its almost flat. This means that your charger should be able to deliver it if you want to charge your battery
Hardware: HK version GN+Scotland MIUI 5.18+Sony EP850 Charger(5V / 1.5A)+2000mah original battery
Measurement soft: Battery Pro
Statistics:
6/5 00:47:49am Capacity 9%
6/5 01:57:36am Capacity 57%(Currency est. 915mah)
6/5 03:47:36am Capacity 100%
Charge time(9% ~ 100%) 3hrs 13sec
Charge efficiency = (2000x(100%-9%))/3 = 606mA/h(Per hrs 606mA)
Conclusion: Charge time is shorter than original 1A charger. But not too much
difference. Since the charge circuit is design to charge at small currency at
the beginning and the end(almost 1mAh)
I will post more figures based on Nokia 1.2A charger and Delta 5V 3A charger.
Pls share urs!!
Here's a graph to show the different charge time and currency between 1.2A and 1.5A.
X-axis is time(Minutes)
Y-axis is currency(mA)
I worked on giant lead-acid batteries on my submarine, and was intimately famiiar with charge current/voltage curves like these.
Li-poly is different game, I learn something new about them all the time. Thanks!
matika said:
Hardware: HK version GN+Scotland MIUI 5.18+Sony EP850 Charger(5V / 1.5A)+2000mah original battery
Measurement soft: Battery Pro
Statistics:
6/5 00:47:49am Capacity 9%
6/5 01:57:36am Capacity 57%(Currency est. 915mah)
6/5 03:47:36am Capacity 100%
Charge time(9% ~ 100%) 3hrs 13sec
Charge efficiency = (2000x(100%-9%))/3 = 606mA/h(Per hrs 606mA)
Conclusion: Charge time is shorter than original 1A charger. But not too much
difference. Since the charge circuit is design to charge at small currency at
the beginning and the end(almost 1mAh)
I will post more figures based on Nokia 1.2A charger and Delta 5V 3A charger.
Pls share urs!!
Click to expand...
Click to collapse
don't forget to include the links to buy them
Did you have fast charge enabled with a different kernel? I've found that there is no need for powerful chargers with Fast Charge enabled. A regular PC USB jack charger just as fast as my 1A wall chargers.
Isn't that a little too slow My phone charges super fast compared to this. And runs around 41 hours on almost standby mode.
arzbhatia said:
Isn't that a little too slow My phone charges super fast compared to this. And runs around 41 hours on almost standby mode.
Click to expand...
Click to collapse
Really? Pls post ur charge time here and ur battery capacity also.
Thank you!
DriveEuro said:
Did you have fast charge enabled with a different kernel? I've found that there is no need for powerful chargers with Fast Charge enabled. A regular PC USB jack charger just as fast as my 1A wall chargers.
Click to expand...
Click to collapse
Yes, I've enable the fast USB charge option(I'm using franco kernel 181r)
And I'm using 1.2A and 1.5A AC charger,but not USB charger.
Battery Pro reported they are all charging in AC mode.
I am planning to buy a new charger for my Moto G as well as Nokia Lumia 520.
I would be using the same charger to charge both phones.
Please help in selecting a correct charger; a 1500 mA charger or 750 mA charger.
Lumia 520 battery is a BL-5j 1430 mAh battery
Moto G battery is a 2070 mAh battery
I dont want to harm any of my phone.
Also is somebody could explain in brief about mAh and charger relting to battery mAh ans all, will be very helpful.
There are plenty of guides about which chargers to use with which devices. In fact there was an xda article about it within the past few months, you can do a search for it in Google.
Sent from my Nexus 5 using Tapatalk
buy a lithium polymer battery
Monsieur_Bond said:
I am planning to buy a new charger for my Moto G as well as Nokia Lumia 520.
I would be using the same charger to charge both phones.
Please help in selecting a correct charger; a 1500 mA charger or 750 mA charger.
Lumia 520 battery is a BL-5j 1430 mAh battery
Moto G battery is a 2070 mAh battery
I dont want to harm any of my phone.
Also is somebody could explain in brief about mAh and charger relting to battery mAh ans all, will be very helpful.
Click to expand...
Click to collapse
you'd better buy a lithium polymer battery instead of a Li-ion one, for which will do harm to your phone.
If you buy a higher mA charger than you can charge your phones faster. So I suggest you should go with the 1500mA one.
Chargers can supply any current (mA) up to their max. rating, the voltage is stabilized to 5V for USB. It depends on the device that contains the charge controller/regulator how fast it's charging the battery. So you can't get a charger that provides too much mA for any smartphone as long as the voltage is not above 5.2V.
More mA=faster charging
Some devices require more mA to even charge. But if they get more it's OK.
Ohm's law is still valid - even for modern electronic devices like smartphones.
http://en.wikipedia.org/wiki/Ohm's_law
Levivig said:
More mA=faster charging
Some devices require more mA to even charge. But if they get more it's OK.
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Click to collapse
I'm building a Lipo battery charger out of an old PC power supply and throwing a USB port on it to use the 5v line. It supplies something around 22A on the 5v line haha. I'm only using 18 gauge wire and the charging cable has like 20 or 22 gauge wire so realistically, I can only charge it at 3 amps before the voltage drops too much.
Don't go too cheap on the charger, some no-name cheapo could actually harm your phone.
I have a couple of generic chargers I've been using with my note 2 for a couple of years. I realize these will charge slower than the samsung fast charge charger but is there any reason we can't use them or will they impact battery life (I would think they would increase battery life); i supect the answer is that they are fine but maybe battery technology has changed and there is some 'smarts' between charger and battery that would be damaged by these ?
No issue using your old charger except as you mentioned it won't be fast charging. I do not believe that the fast charging will hurt the battery. The fast charge only works for the first portion of the charge then the rate of charge slows to a trickle charge.
U can use any charger but i recommend to use any charger with 2amp output as it charges quick 40% in 30 mins insteas of 50%in 30 mins with original.
Original charger has two modes 9v and 5v it charges with 9v untill 50% and switches to 5v after that.
I think the unit i use is a sanyo 800ma 5 volt. I don't mind the slwo charge as long as it can't harm the battery. This is only used during travel and office; @ home I use the charger that came with the device.
You can definitely use another charger. Like said before it wont charge as fast. The adapter that comes with the phone will charge your phone at 9v instead of the normal 5v. If you use a different usb cable with the charger it will still charge at 9v. If you change the adapter, it will charge at the normal 5v whether you use the another usb cable or the one that came with the phone. The usb cable is just wires. The wall adapter is what determines how fast it will charge...
Let's take the charge current and voltage as 3000 mA and 4400 mV for best case scenario, the actual resulting wattage is 3000x4400 = 13200000 (i.e. 13.2W) which is still way lower than 18W. So what's the deal here?
It is charging the phone at 12V 1.5A = 18W
Charging the battery requires 5V Input (The shown 4400mV is the battery Voltage, not Charging voltage) so it needs to get Converted from 12V to 5V
In my case, It is charging at 12V 1.5A Converted inside the phone to 5V 3.4A = 17W (Software based Charging meter are not really accurate, it is even said in the app)
*To get full charging speed, the battery needs to warm up a bit, so the first time plugging the Charger wont be at full speed
*The battery Voltage will increase from around 3.8V at 5% to around 4.3V at 100%
Trisks said:
It is charging the phone at 12V 1.5A = 18W
Charging the battery requires 5V Input (The shown 4400mV is the battery Voltage, not Charging voltage) so it needs to get Converted from 12V to 5V
In my case, It is charging at 12V 1.5A Converted inside the phone to 5V 3.4A = 17W (Software based Charging meter are not really accurate, it is even said in the app)
*To get full charging speed, the battery needs to warm up a bit, so the first time plugging the Charger wont be at full speed
*The battery Voltage will increase from around 3.8V at 5% to around 4.3V at 100%
Click to expand...
Click to collapse
So how to see this accurately in an app? Is there a way where I can check the actual charging voltage and current received by the battery?
Are you also using Accubattery?
th1nd said:
So how to see this accurately in an app? Is there a way where I can check the actual charging voltage and current received by the battery?
Are you also using Accubattery?
Click to expand...
Click to collapse
Use hardware based charging meter like these. But its not really required, you can trust the Factory charger saying its 12V 1.5A.
What you can't trust is third party charger and cables in which case you should check using this.