Quote: Originally Posted by netadict
Thank you for all your replies
I was also under the impression that it was god for the battery to completely discharge it every now and then to prevent "memory" from happening.
Now I'm beginning to think "do what you want with it because you will have to replace it after 3 or 4 years anyways"
3 or 4 years is pretty good anyway, but I know folks that end up replacing a battery after less than 2 years, sometimes much sooner.
Might want to check out that link I posted if you're really interested in prolonging the life of your lithium ion batteries. You may find that you replace the device long before ever having to replace the battery. I've got a laptop from 2005 and a handheld device from 2001 with original batteries, and both get decent runtime (although the 2001 device only gets about 50% original runtime, and it's now a kid's toy).
And by the way, the "memory" you refer to was correct for older nickel cadmium technology. You rarely find those nowadays though. Nickel metal hydride was much more resistant to that memory effect. But discharging degrades the heck out of lithium ion batteries. The only reason to ever allow it is if you want to recalibrate the "fuel gauge" (the reported time remaining or precent charge).
If the charging mechanism for the device/battery cannot properly recognize full charge, periodically trickling juice to "top off", don't practice leaving it on the charger much longer than necessary (they don't like high voltage either).
And remember that heat is one of the biggest killers.
All my opinion of course, but I've had good luck. I've only ever replaced one lithium ion battery. 7 years old. Lucky to get it super cheap ($3 instead of the original $60) otherwise that device would've been disposed of before it actually failed. Apparently they over manufactured that part number.