New laptop battery can't be charged to 100%

Most  people who have purchased a new battery for their laptops may encountered this annoying problem: when they install their newly purchased battery into laptops and plug the adapter to charge battery for about 10 hours or more, however, to their disappointed, their laptop battery only shows 70% capacity or even less.Here are some advice to slove this problem.

Advice 1:

Many laptop batteries may have been put on the warehouse for a long time,so
it may shows inaccurately when used it at the first time. You can fully charge and discharge your battery to perfect is performace.
A typical charge and discharge cycle is as follow:

1. Install your newly purchased battery into your laptop

2. Disconnect the AC adapter and use your laptop until it itself shuts down. In this situation, the battery is fully discharged.

3. Connect the AC adapter and your battery should start charging.

  4. Charge until the battery is full.
Repeat this charge and discharge cycle a few times and your battery pack will be conditioned to perform at full capacity. But not to over discharge or over charge your battery.

Advice 2:

Calibrating your laptop battery to optimize its performance.

Inside the laptop battery is microprocessor software, which calculates the battery volume during the charging/discharging. Batteries must be calibrated from time to time to ensure correctness of the time and the percentage displayed on the screen. You must implement a complete cycle of charging and discharging the battery at the beginning of using the computer, and repeat this cycle every two or three months. The charging and discharging procedure is as follows:

1）. Set the Power Supply option first: Right click on the screen and select Property -> Screen Saver -> Power Supply -> Power Use Scheme -> Portable. In all the subsequent operations such as When Computer and Use Battery, select Never m,. Under the Alert option, deselect Alert for deficient battery and Alert for serious battery shortage.

2）. Disconnect the power adapter and use the battery until the computer is powered off due to exhaustion of the battery.

3）. Connect the power adapter until the battery is charged to 100%. Before initial use of the computer (or resuming use of the computer after long-term storage), the battery must be charged to full and discharged for 3-4 times to optimize the performance. The charging process takes more than five hours.

If your newly purchased battery can't be charged at all, please click the following article for more information.
http://laptopbatteryorg.blogspot.co.uk/2014/04/newly-purchased-acer-as10d31-laptop.html