Used OEM Acer Aspire 7520 BATTERY AS07B31 11.1V 4000mAh    TESTED -- HOLDS CHARGE, WE USED IT TO POWER LAPTOP SEVERAL TIMES, NOT TESTED FOR DURATION ==    ORIGINAL BATTERY NOT AFTERMARKET  REPLACEMENT     If for some reason you are not satisfied with received item, e-mail us through eBay message system. Don't leave negative feedback, money back guaranteed! We value your time and business.   Actual item is pictured!  Please look carefully for the item you will receive.