Eachbid 12V High Capacity Li-po Battery1800mAh Dimension: 6.6cm x 3.7cm x 2cm - 2.60inch x 1.46inch x 0.79inch. Output voltage: 12.6-10.8V. Input voltage: 12.6V. Capacity of battery: 1800mAh. Duration of power up to 8 hours.