Quick tech specs
- lithium ion
- 4400 mAh
- 6-cell
- for ASUS F52; F5GL; F5RL; F5SL; F5Sr; F5VL; F5Z; K40; K50; K51; K60; K61; K70; P50; X5JIJ; X70
Know your gear
Need a battery for Asus Laptops/Notebooks with the following model numbers: F52, F82, K40, K50, K60, K70, X87, X5D, X5E, X8D; Pro 5C, 65, 66, 79, 88? BTI has you covered with our premium 6 cell LiIon battery. This product has been engineered to meet or exceed the original manufacturer's specifications and replaces the original Asus part numbers 70-NA51B2100,90-NA51B2000,90-NA51B2100,90-NA51B2200,90-NA52B2000,90-NA71B1100,A42-A3,A42-A6. All BTI batteries are manufactured and tested under our stringent quality standards and come with an industry leading 18 month manufacturer's warranty. BTI.. True to the Original.