How to check this battery is compatible with my laptop?

• Please find out your old battery’s part number or the exact model name of your laptop at first, then to match our product compatibility chart. Second please compare your old battery to our product images ensure their shape is same. Finally check the voltage(Rating) is same to your old battery's.

Replace the ASUS AP21-T91 Battery

• You can trust us for all your ASUS laptop battery replacement needs with our outstanding customer service. We have replacement batteries for popular ASUS Series laptops.

Thorough Quality Assurance

• ASUS AP21-T91 Battery complies with international safety standards in order to provide safe and high-quality batteries. We provide batteries that have gone through internal verifications and quality tests by trusted third-party CAs.

Optimal Battery Usage Environment

• Our Battery is designed to perform best at 0° ~ 35°C. Continuous use or charging in extreme temperatures may accelerate battery deterioration. Temporary exposure to extreme temperatures will activate the device’s safeguards to minimise damage, and charging will be limited to protect the battery from overheating.

How to charge a new battery for ASUS AP21-T91 for the first time use?

• New ASUS AP21-T91 battery battery pack is normally shipped in its partially charged condition. Please cycle your ASUS AP21-T91 battery by fully charge and discharge it for 3-5 times to allow it to reach its maximum rated capacity before use.