Battery kind: Li-ion, Voltage: 18.0V, Capacity: 4000mAh / 72.00W h.
^^Specification: 121.98 x 85.00 x 62.50 mm, Weight: 790g. ^^No memory effect, over-charge, over-discharge, over-heat, over-current and short-circuit protection. ^^Our products have passed strict quality inspection. if you have any questions, you can contact us. ^^365 days warranty