The Acer battery is tested and inspected before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty. Tech Specs Acer; 15.2 Volts; 3510mAh or 53Wh; 4 Cell Li-ion; Samsung (South Korea); Black; 2 Year Warranty; 30 day full satisfaction guarantee; 300-500 recharge cycles; You can expect up to 5 hours of run time with this Aspire V5-121 battery when new. You can get longer battery life by closing unused programs and dimming your laptop screen. Replaces these Acer Aspire part numbers AP13B8K AP13B3K 41CP6/60/80 M5-583 M5 R7-571G V5-471PG V5-473G V5-552G V5-552PG-XB09 V5-573 V7-581 V7-581PG M5-583P V5-472 VV5-572 V7-581G V7-582P R7-571 V5-552 V5-481P V7-581P R7-571-53338G75ASS


