NEW LINE OF ELITE LAPTOP BATTERIES: NinjaBatt is proud to present its new line of batteries NinjaBatt PRO - Our new replacement batteries use premium battery cells and are made of the highest-quality materials for an overall life expectancy of over a 1000 charge cycles. Bring your laptop back to life. BUILT TO LAST WITH OVER A 1000 CHARGE CYCLES(!): Our new Li-ion battery is rated at 42Wh/3500mAh/11.4V. Combined with its A grade cells and smart control chip, you can expect it out-perform, out-gun and out-last any battery out there!