nvrmd allready done.
nvrmd allready done.
THe way to get the best charge out of a battery is drain it completely, but you will need another battery to do it with the droid. Because you would have to either keep turning it on/off until it does not come on anymore. Or take the batter out and hook jumper (I dont mean car jumper cables) from the battery to a lil light bulb and wait until the bulb dies. People do not have that kind of time unless they have a spare battery.
So what pilot mentioned, I've heard that often with lithium ion batteries - I'm assuming that's just supposed to be either rarely or only when we first get the battery.
I would not do a full discharge like that but maybe once every 60 or so short cycle charges.
Oh yeah, I had a wicked "duh" moment the other day when I was upgrading my kernel that you may want to mention...
Never install a new kernel when you're low on battery (Most people recommend you have at least 40% battery left). I did it when it said I had 20% left... and it didn't take well. I had to plug it in, recover from my Nandroid backup, and then reflash it again. :)
Question, why do you need the battery to last 3 years anyway? OEM Motorola batteries can be had on ebay for ~$10, so replacing one every year or even every 6 months if you really want to is a non-issue. The phone will run better OC'ed, and if you don't have the battery capacity you want, just replace it.
This article from Tesla Motors is a very good read on maximizing battery life (as applied to the Tesla Roadster). Tesla Motors - Leadership
just the type of thread i was looking for. thanks!
Industrial grade batteries don't have built in protection chips like the commercial ones we use. Their charge cycle, top end voltage and low end voltage are a little different because of the life span they need to achieve due to their costs. Commercial Lithium-Ion batteries are set, by the battery not the device, to charge to 4200 micro-volts and discharge down to around 3000 micro-volts (some risk going lower). If you exceed either limit, the battery itself can go into a protected state and shut off. Doesn't matter what you do, the battery won't work till you hook it up to a device that resets the protection protocols of the battery.
A lithium-ion battery does actually last longer if you short cycle charge it. But, there is always a but, the protection circuit has a section devoted to relaying to the device the predicted discharge rate. So if you fast discharge a cell phone battery enough time, it memorizes that rate. Even if you put the phone in standby mode and don't touch it for a day. How do you get around that? You do a deep discharge and then a full recharge in one cycle. It should wipe the pattern from the circuit.
Now here is where it gets very interesting for me. I am not 100% convinced that the Motorola Droid uses the batteries on board drain profile. I have found a file that I believe contains similar data and is used by the Android OS. I just haven't had the time to research it properly because of another project I am working on. I hope to get back to this drain profile file in the near future.