Stay unplugged longer with ThinkPad SL410/SL510 Li-Ion Batteries. This rechargeable battery uses Lithium-Ion (Li-Ion) technology and can be used as a replacement for aging system batteries or as a convenient spare battery.

- Lithium-Ion (Li-Ion) technology.
- Six-cell, rechargeable system battery, 48Wh, 10.8 V dc, 2.6 Ah.
- Standard system battery specifications.
- Over-discharge protection.