Battery type: Li-ion; Voltage: 7.5V; Capacity: 66Wh/8800mAh Compatible Models: Fit for Lenovo Yoga 4 Pro(YOGA 900) Series, Fit for Lenovo Yoga 3 Pro Series, Fit for Lenovo Yoga 900-13ISK Series, Fit for Lenovo Yoga 900-13ISK 80MK Series, Fit for Lenovo Yoga 900-13ISK 80SD Series, YOGA 900-IFI, YOGA 900-ISE, Fit for Lenovo Yoga 900-13ISK2 Series, Fit for Lenovo Yoga 900-IFI Series, Fit for Lenovo Yoga 900-ISE Series, Fit for Lenovo Yoga 900-13ISK2 80UE Series