Specifications:Model:01AV427; Voltage:10.8V;Capacity:72Wh;100% brand new from manufacture. Grade A product ensure fast charges and low power consumption. Compatible Part Number61++ 01AV427 SB10K97584 4X50M08812 01AV428 01AV492 SB10K97585. Compatible Laptop ModelsFit for Lenovo ThinkPad T470 T570 A475 A485 T480 T580 P51S P52S TP25 (Anniversary Edition 25) Series. NOTE:NOT Compatible Lenovo ThinkPad T460s T470s T480s series. Multiple Safety Protections: Our batteries feature multiple protections including Overcharge and Overdischarge Circuit Protection, Over-temperature , Our batteries are assembled with high-quality materials and boards to ensure fast charging. Support:Supported with 30 days Refund and 12 months Replacement.24h Email support.The Futurebatt brand provides friendly customer service.We are committed to providing our customers with the best possible service.