notebook battery for Dell Vostro A840

1.Product model:DELL Vostro A840 Type:Li-lon capacity:4400/4800/5200mah voltage:11.1V size:206.40 x 53.55 x 20.10 mm weight :308.3 g cell:18650*6pcs 2.Laptop battery replacement for: DELL F287H,G069H,312-0818,451-10673,F286H,F287F,R988H 3.Laptop battery fit machine models: DELL Vostro A840,A860,A860n,1014,1015,inspiron 1410 Series Laptop Battery 4.Quality warranty: Our product have: Over Charge protection Over Discharge protection Over Voltage protection Short Circuit protection To control IC to monitor each battery voltage,avoid over charging or discharging For all product: 1.we do the aging test and capacitance test to the cells ,and do performance and integration test to the finished products 2.strictlyrunthe IS09001:2000 quality system and commit 1 year quality warranty 3.Ourare aprofessional factory with all series ofdigitalcertificationDell laptop battery