Does long-term battery life go down if drained 100-->30-->100, vs 100-->95-->100?

My battery drains from 100 to 95 when plugged up, then it charges again, I think.

Anyway, would using my battery a lot (so it would drain from 100 to 30 or so) instead of keeping it plugged up cause long-term battery life loss more than just repeated 100-->95-->100 cycles?

 

Cycle called a complete discharge - charge run .

 

In most cases if the battery life is your main concern the advice is to leave it unplugged and use the battery (to as low a point as possible) then recharge. Leaving it plugged in will most likely decrease life.

 

NO NO NO NO NO NO!

The more you drain your battery, the harder it is on it and the more you will wear it out.

If your really worried about maintaining your battery life then remove the battery after plugging the laptop in. Heat is the worst thing for a battery, and being held next to all of your hardware and being constantly trickle-charged will accelerate wear, but going to 30% every day will be much worse.

 

Okay, so you're saying the trickle wear of 100 to 95 to 100 to 95 to 100 better than multiple full discharge cycles?

 

I thought I read somewhere that once the battery is fully charged it leaves it alone in modern notebooks. On my HP the charging light turns off when the battery hits 100%. Is this true?

 

Although there is huge debate on the subject, from my experiences, full discharges are not recommended for lithium batteries. The only time you should do it is to calibrate your battery maybe once every few months.

My notebook doesn't charge if the battery is hovers from 95%-100%. I usually use it to 25% or so then recharge it to 100%. I also leave my battery in my computer and just keep it propped up to prevent heat build up (which it rarely does since it doesn't charge often, it's more of a UPS in case of a power failure).

 

I had my Dell D600 for 4 years and battery life did not diminish much. I had it plugged in most of the time but I would use it on battery 4-5 times a week as well (Drain down to 10-40% or so before recharging). And the D600 would get pretty hot when left running (I used to leave a bottle of water on the palm rest to absorb the heat overnight). Worst thing is to leave it plugged in and never use it on battery (had several friends that did this and their battery life went down to ~10minutes after a few years). Just unplug it and use it on battery once in a while (I do this when I take it to the living room).

 

I use up my battery to about 10% everyday. There has been about 10-20% battery wear after 6 month.

Leaving the battery in the latop and let it tickle charge is definetly better than "using" the battery. Nowadays... heat from a laptop isn't really a issue unless you're using a "performance" laptop or stress your laptop. My part of my comptuer near the battery is cool even when stressing the cpu and gpu.

 

the decrease in battery life is because of going below the threshold voltage. these people always thought that by empty to 0%, it will increase the life. but NO NO!
these battery r special ones. they DO NOT behave the same as NI-MH AA/AAA battery.
what causes them to decrease the battery life is because of the default value in windows xp, which will alarm at critical at 3%.

to be safe n no need to worry, change the settings to either 15% to 20%. u never have to worry, because it will alarm you when remain to those value.

look at this, under LI-ON: http://www.batteryuniversity.com/partone-21.htm

also i have observe from RMClock, look at warning alert and low battery alert. i do some maths, n found out that it is 7.5% n 4%.