Lithium ion batteries don't self discharge in any significant way. That said, to prevent the cells from deteriorating, the system must be used on battery periodically - at least once a month, install the battery, use it normally until the charge drops to 40% or lower (but DO NOT completely discharge it) and then charge it.
Kept in the system or stored unused, the cells will eventually deteriorate, no matter how they're treated - the cells don't last forever.
You say, "Recharge once a month.". That means battery charge drops due to inactivity?
The final "loop" looks like this: ?
1. Leave the battery at 80%
2. Remove and store
3. Battery charge drops due to inactivity, goto 1.
...
Also, one last question. Since I will be removing the battery, I'm thinking of buying a UPS. My question is, should I buy one that outputs a sine wave (cons: expensive) or I can buy one that outputs square wave (pros: cheaper)?
speedstep
9 Legend
•
47K Posts
1
September 5th, 2011 10:00
The battery is not a simple battery. It has circuitry on it that monitors the battery. This circuit uses power.
The battery uses EVEN MORE power when not attached to the charger.
Most batteries within 1 year or less will completely discharge the battery if left without testing.
If you dont feed your dog for a year he too will die.
So In or out of the laptop the battery discharges. You have to put it back in the laptop to see if its still at 80 percent.
if it isnt you should charge to that point and then store again.
APC Backups Units are not harmful to your laptop ac adaptor.
You should reboot your machine every so often. If you have automatic updates on it will do this by itself.
speedstep
9 Legend
•
47K Posts
1
September 5th, 2011 18:00
"Lithium ion batteries don't self discharge in any significant way."
This statement is not true.
^ H. Abea, T. Muraia and K. Zaghibb (1999). Vapor-grown carbon fiber anode for cylindrical lithium ion rechargeable batteries.
Journal of Power Sources 77:2, February 1999, pp. 110-115. DOI:10.1016/S0378-7753(98)00158-X. Retrieved 2010-06-11.
15% at 40 °C
31% at 60 °C
(per month)
12 * 8%=96% in 1 year
speedstep
9 Legend
•
47K Posts
0
September 5th, 2011 09:00
leave the battery at 80 percent and remove and store in cool dry place.
Recharge once a month.
Batteries will age whether you use them or not.
If you dont recharge for a long time the battery will go flat and NEVER take a charge again.
Deep discharge is not a good idea.
ejn63
9 Legend
•
87.5K Posts
0
September 5th, 2011 10:00
Lithium ion batteries don't self discharge in any significant way. That said, to prevent the cells from deteriorating, the system must be used on battery periodically - at least once a month, install the battery, use it normally until the charge drops to 40% or lower (but DO NOT completely discharge it) and then charge it.
Kept in the system or stored unused, the cells will eventually deteriorate, no matter how they're treated - the cells don't last forever.
unsigned long i
2 Posts
0
September 5th, 2011 10:00
Hi SpeedStep,
You say, "Recharge once a month.". That means battery charge drops due to inactivity?
The final "loop" looks like this: ?
1. Leave the battery at 80%
2. Remove and store
3. Battery charge drops due to inactivity, goto 1.
...
Also, one last question. Since I will be removing the battery, I'm thinking of buying a UPS. My question is, should I buy one that outputs a sine wave (cons: expensive) or I can buy one that outputs square wave (pros: cheaper)?
Thanks again.