Laptop batteries are batteries used to power laptop devices without using an AC power adapter.The length of the laptop battery duration is related to the size of the battery and the amount of electricity used by the system resources.A non-Charging a laptop battery can be caused by a variety of different reasons, but the general trouble-shooting principle for correcting this problem is to double chargeCheck and ensure that the AC adapter used to charge the battery is properly connected to the computer and the power outlet.Also check if the power outlet is generating power (make sure it works by plugging in a different device ).The laptop battery needs to be charged with a specific voltage and current from the AC adapter.Using an AC adapter that does not provide the correct voltage or current specified by the laptop battery can cause the battery to be charged incorrectly or not at all.The accumulation of dust and particles between the battery and the laptop can cause poor connection, resulting in power failure or inability to charge the battery.Troubleshoot the laptop battery by removing the laptop battery from the laptop and checking the build up or residue on the battery connector.If the laptop is running on the battery and then plugged in using an AC adapter, the battery will run less time than normal expectations over time.This is caused by a battery memory problem and can be fixed by completely draining all the power of the battery before fully charging with an AC adapter