Laptop Battery does not charge

A few days ago power outage, electricity used to forget to flush, put on the battery on the power cord must be pulled down and then plugged in to boot, a little power is not charged. Plug in the battery display project unknown, why the battery is unable to charge.

There are three reasons why the battery is out of order, the power adapter is faulty, and the power module on the laptop motherboard is faulted. First, eliminate the source of the fault, unplug the battery, only use the power adapter to boot, if the normal power supply is the adapter and the motherboard is no problem, if the failure is still likely to be a power adapter or motherboard problems, this time, try to use battery boot, if the battery and power is the same reason can not be a smooth boot, It may be a problem with the laptop board.

Notebook batteries used too long, or idle too long will appear to be unable to charge the situation, there is no good way to change the battery bar. Laptop batteries have more built-in control chips, sometimes collisions, or low temperatures can also cause damage to the battery.

The following figure:

The battery has been dormant due to excessive discharge, the lithium battery will go into hibernation less than 3v, now the voltage of 2.75v (8.26V/3) has been lower than the 3v low voltage limit. In the absence of professional equipment, you can only try the following two ways:

1. To connect the power supply, put a day or so time (on the boot can be), to see whether the self-activation.

2. Battery out, the back of the battery has a button and several LED lights, click or long press the three-second button (all try), see whether it can be activated.

The failure of the power adapter may be the current is not stable, plug the power of the moment when the instantaneous high-voltage current damaged the adapter.

Motherboard failure is similar to the power failure, but more is the internal dust accumulated in the notebook caused by poor heat caused by high temperature welding components.

The most effective way to eliminate the failure of the power adapter or motherboard is to use the replacement parts to do the testing, recommend to the After-sale repair center to do the test is relatively good, generally this fault detection is free of charge.