CoolGo Replacement Battery For Acer Aspire 5520 5720 5920 6920 6920G 7520 7720 7720G 7720Z eMachines G420 G520 G620 G720 laptop Battery [Li-ion 6-cell 5200mAh/58WH] Battery Type: Li-ion; Voltage: 11.1 V; Capacity: 5200mAh; Color: Black; Cells: 6-cell Full compatible with your original battery, brand new direct from Professional Manufacturer. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. CE UL RoHS certified safe use.OEM factory price, US local dispatch Please make sure that the battery part numbers listed in the description matches the battery part number on your original battery before you purchase.