NinjaBatt Laptop Battery for HP 493976-001 EliteBook 8540W 8540P 8530P 8740W 8530W 8730W HSTNN-LB60 AV08KU533AA HSTNN-OB60 AV08XL 484788-001 HSTNN-XB60 NBP8A82 501114-001 [8 Cells/4400mAh/63wh] PREMIUM QUALITY REPLACEMENT NOTEBOOK BATTERY: Bring your laptop back to life with Ninjabatt's high quality laptop battery - Made of high quality materials, top grade battery cells and packed with safety features. TRUE CHARGING CAPACITY THAT LASTS: Every one of our replacement notebook batteries are tested to meet OEM specifications. Our 8 cells Li-ion battery is rated at 63wH/4400mAh/14.4V - true charge capacity that wont let you or your laptop down. SAFETY FIRST: Dont fall into buying cheap and unsafe batteries, our batteries are UL/CE-/FCC-/RoHS certified for safety and packed with a variety of safety features, including short circuit, overheat, and overload protections. HIGH QUALITY COMPONENTS: Our Laptop batteries are assembled from top quality material and circuit boards to ensure durability and performance, our batteries are equipped with grade A battery cells that provide up to 500 charging cycles. 12-MONTH WARRANTY AVAILABLE ON ALL LAPTOP BATTERIES: Were so confident in the performance of our replacement laptop batteries that were including a 12-month warranty with every single purchase. Reliable performance Extended battery life Safe use anytime, anywhere