Help Is Battery Calibrated After Drain and Full Charge OR...

[Phoenix777]

...is there another step such as using that full charge to drain again?

I know calibration is not really necessary these days with the improvement of battery technology, but I still like to calibrate it the old-fashioned way once in a blue moon. And I can't remember: Do you just use it until it shuts itself off and then fully charge it to 100% ... and then it's calibrated? Or do you have to use it again until it drains?

 

[AZgl1500]

There is NO need to drain a Lithium-Ion battery to the ground...
in fact, it is considered harmful by the manufacturers IF you persist in doing it on a regular basis.

They highly suggest that we consider 40% as being discharged and to put it back on charge at that point.
I do try to adhere to this as much as possible.

Why?

1. the battery can reach 95% or more without incurring high internal temperatures.

2. the length of time to recharge is much shorter, which is why #1 occurs.

3. 40% is about the nominal "storage value" for a Lithium-Ion to be left alone for months at a time w/o harm.

4. Batteries that are kept in the upper regions of the "state of charge" will literally have a Life Span of years, if not decades...

I have a very old Galaxy S Fascinate that still has the OEM battery in it, and it still gives a very reasonable time of use before needing to be recharged and that is at the 40% point. I have always practiced what the OEMs preach, and it has always worked for me.

nearly everyone who complains of piss poor battery performance is the same guy who insists that he should be able to run it down to 10% or worse on every discharge cycle. Sorry, but you just cannot defeat the Laws of Physics. The chemistry can only do so much, and you need to adhere to the manufacturers recommendations... or you should at least.

 

[Phoenix777]

There is NO need to drain a Lithium-Ion battery to the ground...
in fact, it is considered harmful by the manufacturers IF you persist in doing it on a regular basis.

They highly suggest that we consider 40% as being discharged and to put it back on charge at that point.
I do try to adhere to this as much as possible.

Why?

1. the battery can reach 95% or more without incurring high internal temperatures.

2. the length of time to recharge is much shorter, which is why #1 occurs.

3. 40% is about the nominal "storage value" for a Lithium-Ion to be left alone for months at a time w/o harm.

4. Batteries that are kept in the upper regions of the "state of charge" will literally have a Life Span of years, if not decades...

I have a very old Galaxy S Fascinate that still has the OEM battery in it, and it still gives a very reasonable time of use before needing to be recharged and that is at the 40% point. I have always practiced what the OEMs preach, and it has always worked for me.

nearly everyone who complains of piss poor battery performance is the same guy who insists that he should be able to run it down to 10% or worse on every discharge cycle. Sorry, but you just cannot defeat the Laws of Physics. The chemistry can only do so much, and you need to adhere to the manufacturers recommendations... or you should at least.

Thank you for your reply. Do you have a link from the manufacturer that states what you wrote? I've read so many conflicting views from manufacturers about this, a link would be very helpful. Thanks again!

 

[AZgl1500]

Right now, I don't.... my PC crashed and I had to reimage it back to where it was on November 2015....
sorry...

but, my avocation has been in Electronics/Communications since 1958, and I tend to remember what I am told in the factory training seminars.

 

[eddiekeyton]

...is there another step such as using that full charge to drain again?

I know calibration is not really necessary these days with the improvement of battery technology, but I still like to calibrate it the old-fashioned way once in a blue moon. And I can't remember: Do you just use it until it shuts itself off and then fully charge it to 100% ... and then it's calibrated? Or do you have to use it again until it drains?

Draining it is actually bad. Sometimes they don't like to charge back up once they hit 0%. It's not NOT necessary. It's plain and simple a waste of time and not needed. 0 good benefits and it hurts the battery.

 

[El Presidente]

Thank you for your reply. Do you have a link from the manufacturer that states what you wrote? I've read so many conflicting views from manufacturers about this, a link would be very helpful. Thanks again!

Here you go - http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

Lithium batteries don't have a memory and your phone doesn't need calibrated, so charge as and when.

 

[Phoenix777]

Here you go - http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

Lithium batteries don't have a memory and your phone doesn't need calibrated, so charge as and when.

LOL "Battery University"?? Never knew there was such a thing! haha Thank you SOOOO much for this!

And thanks everyone for your replies as well...I hit "Like" on all of them. Thanks again for all your help and have a great day!

 

[Fox Mulder]

Any advice about fully discharging to clear memory or extend battery life dates back to the old NiCad and NiMh rechargeables. For those types of cells this procedure may be beneficial, for lithium-based types it most certainly is not.

 

[Phoenix777]

Any advice about fully discharging to clear memory or extend battery life dates back to the old NiCad and NiMh rechargeables. For those types of cells this procedure may be beneficial, for lithium-based types it most certainly is not.

Wonder why "Android for Dummies" still states today that you can and should calibrate lithium-based batteries. Guess the "Dummies" series needs a "Dummies for Dummies" book lol

 

[Deleted User]

because people flash roms sometimes by similar devices if you look in the kernel it list all battery models supported that also get selected through makefiles and scripts; moreover, some of these files can become corrupted from system instabilities.

 

[Phoenix777]

I just think it's very odd that ppl say don't calibrate yet my lithium ion MacBook Air battery has outlasted anyone I know... And I've always calibrated it every few months

 

[eddiekeyton]

I just think it's very odd that ppl say don't calibrate yet my lithium ion MacBook Air battery has outlasted anyone I know... And I've always calibrated it every few months

Maybe you just got a really good battery? There isn't an reason to calibrate it.

 

[Phoenix777]

Maybe you just got a really good battery? There isn't an reason to calibrate it.

Yes could very well be!

 

[Fox Mulder]

I think that's more an issue of making sure the OS is accurately reading the battery state of charge than actually "conditioning" the battery itself. Too bad because that full discharge isn't all that good for it.

 

[AZgl1500]

I think that's more an issue of making sure the OS is accurately reading the battery state of charge than actually "conditioning" the battery itself. Too bad because that full discharge isn't all that good for it.

Precisely:
All you are accomplishing is ensuring that when the battery is about about 40%, the PC's OS battery monitor module can display a correct correlating result, and compute a general "length of time remaining" display.

 

[Phoenix777]

I think that's more an issue of making sure the OS is accurately reading the battery state of charge than actually "conditioning" the battery itself. Too bad because that full discharge isn't all that good for it.

I only did it once to my tablet, and I've stopped doing it to my laptop...since this thread.
Thanks everyone!