Sometimes you may be late for an event or maybe a lecture but your phone is down. Here's how to fast charge your device to get to a reasonable percentage in a few minutes.
#1: Use a good, powerful charger
For most Android phones a 5.0v~2.A charger is powerful enough but it depends on your battery capacity. A battery higher than 3000 mah should use a higher charger.
Fast -charging devices has no negative effects on battery life (the charging circuits controlling modern batteries are very good).
#2: Put the phone in airplane mode
Staying connected to a cellular network drains the battery and slows down the charging.
By turning airplane mode on the device is not burning through the battery as you're trying to charge it up. Averagely, most devices charge about twice as fast when they are in airplane mode as they do when in normal mode.
#3: Remove any phone cases
Most especially thick rubber cases, because batteries charge slower when they get warmer. It's also a nice idea to place the phone in a cool spot while it's charging.
#4: Leave the device alone while it's charging
If you're sure you plugged it in properly resist the usual temptation to check how it's charging every few minutes, because every time you activate the display you're increasing power consumption and slowing down charging
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