BLESYS 4400mAh 61+ 01AV491 01AV452 External Battery for Lenovo Thinkpad T470 T570 A475 P51S TP25 Series

• Battery Specifications: 10.8V, 4400mAh, 47Wh, 6-cell lithium-ion replacement battery, can be charged and discharged 500 cycles.
• Also available for Lenovo Thinkpad T480 T580 A485 P52S series. (but not including T470S T480S series)
• Compatible part numbers: 01AV422 01AV423 01AV424 01AV490 01AV425 01AV426 01AV491 01AV427 01AV428 01AV492 01AV452 SB10K97579 SB10K97581 SB10K97582 SB10K97583 SB10K97584 SB10K97585 SB10K97597 SB10K97661 4X50M08811 4X50M08812 4X50M08810 02DL023 L18M6P71.
• Stable and secure: All BLESYS brand batteries are built-in Class A cells, equipped with multiple protection circuits for over-charging, over-discharging, over-voltage, over-current and over-heating, making them safer and more stable to use and as reliable as the original batteries.
• Considerate service: Our batteries are covered by 30 days unconditional return policy and 12 months warranty. If you have any problem with the battery you purchased, please feel free to contact us by email, we will reply within 24 hours and provide you with a satisfactory solution within 48 hours, thank you for your feedback and suggestions.

Compatible with the following laptop models: For Lenovo for Lenovo ThinkPad T470 T480 Series T470 20HD/20HE 20JM/20JN Series T480 20L5/20L6 Series for Lenovo ThinkPad T570 T580 Series T570 20H9/20HA 20JW/20JX Series T580 20L9/20LA Series for Lenovo ThinkPad A475 A485 Series A475 20KL/20KM Series A485 20MU/20MV Series for Lenovo ThinkPad P51S P52S Series P51S 20HB/20HC 20JY/20K0 Series P52S 20LB/20LC Series for Lenovo ThinkPad 25 TP25 Anniversary Edition Series 25 20K7/20K8 Series TP25 20K7/20K8 Series This compatibility list is not exhaustive. If your original part number or laptop model is not included in the compatibility list, our battery may still fit your laptop. Please do not hesitate to contact us to confirm compatibility. To utilise the maximum battery capacity, use the battery directly up to 7% of the remaining capacity, switch off the laptop and then charge it for at least 12 hours. If you repeat this complete charging cycle 2-3 times, you can fully utilise and optimise the maximum performance of the battery.