How to Make Your Cell Phone Battery Last Longer 8
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Charge your battery properly
Depending on the type of battery you have -- the common lithium ion or the rarer, older nickel-based -- you have to make sure you charge it correctly or else it can drain more quickly or display the remaining power inaccurately. A good rule is to let the battery fully discharge when you first get the phone and do so occasionally after for nickel batteries. For lithium, let it discharge to about 40% before recharging. Lithium batteries will also decrease in power over time, about 20% a year, so if your phone is getting old, it may be time to replace the battery. The type of battery you have is usually marked right on the battery itself.
