Here's everything you want to know about charging and discharging Lithium-ion and Lithium-ion polymer batteries. Our Razr series Motorola phones have Lit-ion polymer batteries. When you access the link there's a section about overcharging, over discharging and also talks about the similarities of the polymer batteries.
Charging Lithium-Ion Batteries
There's lots of info on the above linked site so surf around.
I think I need a more basic "do and don't" haha. I wasn't sure what the article was talking about with voltage and stuff.
This was at the bottom of the page I linked.
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Simple Guidelines for Charging Lithium-based Batteries
? A portable device should be turned off while charging. This allows the battery to reach the threshold voltage unhindered and reflects the correct saturation current responsible to terminate the charge. A parasitic load confuses the charger.
? Charge at a moderate temperature. Do not charge below freezing.
? Lithium-ion does not need to be fully charged; a partial charge is better.
? Chargers use different methods for ?ready? indication. The light signal may not always indicate a full charge.
? Discontinue using charger and/or battery if the battery gets excessively warm.
? Before prolonged storage, apply some charge to bring the pack to about half charge.
? Over-discharged batteries can be ?boosted? to life again. Discard pack if the voltage does not rise to a normal level within a minute while on boost.
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Does this help?
It's just that it doesn't say whether it's good to let it the charge run down sometimes before charging, or whether it's bad to leave it plugged into the charger for a long time, stuff like that.
As far the "turn it off while charging," that's a no-go for me. I only have a cell phone, no land line, so I'm not comfortable cutting off my contact with people while I'm charging it.
It's just that it doesn't say whether it's good to let it the charge run down sometimes before charging, or whether it's bad to leave it plugged into the charger for a long time, stuff like that.
As far the "turn it off while charging," that's a no-go for me. I only have a cell phone, no land line, so I'm not comfortable cutting off my contact with people while I'm charging it.
In the link I sent, this is in the "Over-discharging lithium-ionbatteries" section;
Li-ion should never be discharged too low........
In the "Over-charging Lithium-ion batteries" section, it said this;
Lithium-ion operates safely within the designated operating voltages; however, the battery becomes unstable if inadvertently charged to a higher than specified voltage
And this;
Lithium-ion is not the only battery that is a safety hazard if overcharged
Those statements alone would lead me to believe you should not leave the charger on to long.
So like I said all the info you were looking for was on the battery university website.
I agree with you regarding turning off the phone while charging as my wife and I gave up our landlines many years ago.