Does doing so lower the battery performance or life? I'm talking about getting connecting the phone to the power when batt percentage shows like 50,60 or 70.
As long as you run the battery to zero once a month it doesn't matter what you do in between.
As always with threads on this topic:
http://www.apple.com/batteries
I didn't know that I should run the battery on my phone to zero once a month as once it gets below 10 %, I usually recharge the phone.
so, does that mean you do not have to run the battery to 0 like some suggested?
Running it to 0 once a month or so is for calibration purposes. It's good from time to time to let the phone know what "empty" is. That will help your battery % stay more accurate.
It should be done either way, it's for optimal battery health.I'm not doubting that calibrate stuff is accurate, but for most users, I would bet that plugging it in at bedtime no matter where the battery is at is just fine. If you don't have battery issues, there is no point in worrying about running your battery out once a month. I would also bet that most users do not do this and haven't needed to.
As long as you run the battery to zero once a month it doesn't matter what you do in between.
Sure but you should let the batt. run a full cycle every now and then.
It should be done either way, it's for optimal battery health.
interesting ... many of us were educated to let battery runs to zero before recharging .. but i wonder why the info was not in the instruction booklet that came along with my iphone.
What about taking the phone off the charger before it's done charging. Does that affect it's life? Ocassionally need a quick boost to get me through the day but can't let it fully charge.
You don't. More mis-information on batteries than you can imagine.
This is good advice for your 1999 battery for your camera, but not really pertinent now.