Your battery gauge is lying to you (and it's not such a bad thing)

[SandmanEight]

Well written explanation byrong. Thank you!

 

[Magpir]

How do u do this with windows phone htc?

They cant be turned off while charging.

 

[beowulf1979]

Very well written and explained. Thanks

 

[autre_pensee]

Great thread. Thanks for the graphs!!! Very instructive

 

[WookieFan]

Very well done. Do you have any thoughts on battery conditioning? Is it useful, recommended or useless?

Sent from my Dell Streak 7 using Tapatalk

 

[byrong]

Do you have any thoughts on battery conditioning? Is it useful, recommended or useless?

Personally, I don't do it. It seems to be one of the more touchy topics when it comes to batteries, with arguments devolving to "I don't care what your fancy science says! I know what I've seen!"

Example from XDA: http://forum.xda-developers.com/showthread.php?t=1169979

I would recommend reading around on Battery University, for example this article:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

 

[Toledo_JAB]

So the Chargers supply standard USB 5v dc to phone, and the drivers/kernel use it as programmed. So the phone actually charges itself? Right. So I am ok plugging it in overnight but not running below 20% or red.
I hope my X10 battery recovers from my ignorance. :-(

Nice work on this very helpful.


X10a, Wolf's XPERIA, DooMkerneL, 1.2Ghz

 

[Antarsrider]

Very Informative

Thank you for taking the time to make this post! The information provided has helped me understand that I do not need to worry so much about my battery as I had been.

 

[Athalon]

Thanks

Allthough it may seems pointless just to add my thank, i do think this is a very informative piece, i dont think i will do any battery tricks. i will just drag my charger along everywhere i go. TYVM!

 

[AlexGraves]

OMG ... what an enlightment ... :good:

Thank you for the information. Now I will try the partial charging whenever i get the chance.

 

[criptix]

The whole discharging to 90% while on the charger was one of my many reasons for taking the evo 3d back after I bought it.......guess they were using the honest method, it makes sense tho and thanks for the write up

Sent from my SPH-D710 using xda premium

 

[prboy1969]

Thank you. Well written and informative :good: .

 

[ra9b]

thank you so much for clearing this up. i have always told my friends about this problem that i have. i will change my charging habits.

 

[zimarrio]

Thanks for all the detailed info. Very well written. I think everyone should read this as there is a lot of wrong information about batteries...

 

[calcali33]

Excellent article. Very informative and insightful. Thanks.

 

[akita16384]

I can't see how an automobile adapter which outputs 5 volts DC can be any way different from a wall charger that outputs 5 volts DC. The phone can't tell the difference and won't charge any differently.

Comments about the input (DC from the car, 12-14 volts or so) or the home (120 volts AC) aren't relevant since the charger should be putting out the same 5 volts DC.

If Motorola is saying that their car chargers are somehow different then they must be putting out more than the specified 5 volts DC. If so, then they're defective. They can't claim that EVERY car charger is equally defective.

(For reference, my undergraduate degree is in Electrical Engineering. If you're going to disagree, please explain why.)

A lot depends on how the car chargers are designed although the same can be said about AC-DC adapters.

Car chargers just need a voltage step-down and can be down in a few ways, either with a 1) transformer or 2) a cheapo resistor step down. Either way, if the charger has no proper voltage or current cap protection built-in, surges in current can affect or damage the phone. I reckon that is why starting the car would cause the car radio and other stuffs to do 'dim'.

Now, most decent chargers would have simple diode or fuse protection, so it is prob ok.

The same dangers can be true for ac-dc adapters. If proper protection is not built in, the phone can be fried if lightning were to strike the building. But this extends beyond just the adapters, but to both the house earthings, power mains circuit breakers and wall sockets.

One thing that may have it going for ac-dc adapters is the rectifiers used for converting ac input to dc output. They also act as voltage regulators and protection. They would mostly fry first in the event of a current surge before killing your phones.

But again, not all ac adapters are equal.

All said, make sure your charges have the FCC and EC (and whatever Cs there is) certification, or you could open them up to see what wizardry is inside, and solder in diode or fuse protection if there aren't any!

 

[LiquidSolstice]

And three years later, regardless of what phone you own, this is an extremely well written post and is helping people make better decisions about bump charging, especially those who have phones with non-removable batteries.

 

[makbil]

Thanks for this informative post. At least people can now make informed decisions on if they want to bump charge or not and also if it will help them occasionally to do so. There's a trade off in everything and rather than say bump charge is bad, people should just think of what they are gaining versus what they may be loosing and make a decision based on that.

 

[ademcal]

Thanks for usefull searching.

 

[Ahmedmoataz]

great work!!

I don't have this exact problem but I have similar one when the phone is 15-20% it suddenly drops down to 10% and then drops down again to 1% !!!
But can last for an hour on 1% or sometimes shutdowns but when I start it again without changing it's 20% again!!????

Please help me bro!!!
I am using note10.1 2014 3g

thanks In advance