Description Capacity - 72WH/6600mAh 4400mAh 24WH/2100mAh Voltage - 10.8V 10.8V 11.4V Color - Black Black Black Cell - 6 Cells 6 Cells 3 Cells Battery Type - Li-ion Li-ion Li-ion Condition - Replacement Battery (100% Brand New） Replace Part Number - 01AV422 01AV423 01AV424 01AV425 01AV426 01AV427 01AV428 01AV452 01AV490 01AV492 SB10K97579 SB10K97580 SB10K97581 SB10K97582 SB10K97584 SB10K97585 SB10K97597 Compatible Laptop Model - For Lenovo ThinkPad T470 Series For Lenovo ThinkPad T480 Series For Lenovo ThinkPad T570 Series For Lenovo ThinkPad T580 Series For Lenovo ThinkPad P51S Series For Lenovo ThinkPad P52S Series For Lenovo ThinkPad A475 Series For Lenovo ThinkPad A485 Series For Lenovo ThinkPad TP25 Series PLEASE NOTE - 10.8V 72WH/6600mAh 6Cells (extended) 10.8V 48WH/4400mAh 6 Cells 11.4V 24WH/2100mAh 3Cells (standard) 100% fully compatible each other. Photos - High Quality Cells & High-quality Li-ion battery cells provide plenty of power, stable capacity and longer running time No