Linnaeusaer0
Joined: 21 Aug 2013
Posts: 5
Location: INDIA
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 Posted: Wed Aug 21, 2013 2:54 pm Post subject: Battery Charging Myths |
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Battery Charging Myths
I've seen a TON of people saying stuff like "It will hurt the battery if you use your phone before charging it" and "You need to do a full charge/drain cycle" to protect your battery.
That's just not true. It won't have any effect at all, not even a minor one. Trust me; I've been a "battery hobbyist" for nearly a decade now. Lithium-Polymer and Lithium Ion batteries have no memory effect whatsoever; these warnings and advice that you're reading are a carryover from previous battery chemistries where it was good to be do several full drain/recharge cycles.
With Lithium Ion, in fact, is actually very bad to do a full discharge and it will reduce the capacity of your battery. 4.2v is full charge for lithium ion/Lithium Polymer, and there is a protection circuit built into the battery somewhere around 2.4-2.7v. Once that threshold of discharge is reached, the battery will cut itself off to prevent even worse damage. This is why sometimes a phone will have trouble turning back on after the battery totally dies - the battery has to be recharged past the cutoff threshold before the phone will start up again. This is the point where you have "0%" battery life left on the phone. It's much better to charge your phone frequently than to do full charges and discharges - it will keep your battery in much better shape. Now, a full discharge once in a while won't totally kill your battery, but it will reduce the recharge cycle life of the battery. Not a ton, but it will nonetheless.
Other than avoiding full drains, the other thing you should do is to only use high quality chargers. Now it won't matter much if you charge the battery in your phone as the charging algorithms are software controlled in the phone itself, but I would be very wary of using generic ebay wall chargers like the following for the loose or extra batteries.
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