Mobile battery power is exhausted and can not be used
Activated with a large voltage charger. Cell phone batteries are 3.7 V, can be connected to the plate with the 5.1-volt charger activated, pay attention to the need to remove the battery operation.
Short-circuit stimulus. On the universal charge can not be filled and the phone charging invalid, short circuit to stimulate the battery positive and negative recovery charge.
Continuous charge activation method. Open the phone shell to remove the battery with a universal charge to connect the battery, continuous charging until full.