Features: -This battery pack consists of 5-cell Ni-MH AA high-performance batteries with perfect performance and long service life. -Can be charged and discharged more than 600 times, does not contain lead, mercury and other heavy metal harmful substances, environmentally friendly and durable. -It can be connected with a USB charging cable (included), and can be charged by power bank, mobile phone charger, computer and other devices. -Compatible with RC toys, RC truck vehicles, electrical household appliances, lighting equipment, etc. Specification: Capacity: 2400mAh/ 13.2Wh Voltage: 6V Battery type: Ni-MH Battery size: 73*50*15 mm Connection type: SM-2P plug .