Battery Model: 01AV423 Plug & Play Li-ion BatteryLi-lon battery
Voltage: 11.4V 24Wh 2100mAh 3A+Cells
(Also compatible with 48Wh 4400mAh 01AV425 61+ battery and 72Wh 6272mAh 4X50M08812 61++ battery )
After-sales service: 60 Days Free Trial and 24 Months warranty

Replace Part Number:(Please "Ctrl+F" search your laptop model)

for Lenovo ThinkPad 61 battery: 01AV423 4X50M08810 01AV422 SB10K97579 SB10K97580 01AV424 SB10K97581 01AV452 SB10K97597 01AV490.

for Lenovo ThinkPad 61+ battery: 01AV425 4X50M0881 01AV491 SB10K97582 SB10K97583 01AV426 L18M6P71 SB10K585 SB10K97661 02DL023 TP00088A SL10P41432

for Lenovo ThinkPad 61++ battery: 01AV427 4X50M08812 01AV428 SB10K97584 SB10K97585.

Compatible with Lenovo Laptop Models:
for Lenovo ThinkPad T470 T480 T570 T580 P51S P52S A485 TP25 Series (NOT fit for T460S/T470S/T480S series laptop)

Note:
1.Before placing your order, we highly suggest you to open the back case of your latptop and check out the exact part number of your laptop's original battery.
2.The new battery use to 5%(not to 0%) and then charge to 95%, and cycle 3-4 times.
3.Do not disassemble, crush or puncture. Do not dispose of in fire or water.
4.If you remove battery for a long time, charge more than 80% at least one time with one months.
5.Don't connect adapter for a long time while using the battery. It may damage the battery.
6.When using the battery, care should be taken to prevent exposure and moisture.