ThinkPad Battery 44+ (6 Cell) - Primary Battery.

These are compatible with X220 and X230 systems and are ideal for use as a replacement or spare. The 6-cell batteries are rechargeable and allow you to stay unplugged longer, lasting on average 63 watt hours*

.• Lithium-Ion (Li-Ion) technology

• 6 cell system battery

• Battery energy (Watt-hours): 63 Wh

• Not compatible with the ThinkPad External Battery Charger (40Y7625)

The ThinkPad battery 44+ uses advanced Lithium-Ion technology to create an efficient power source for x230 and x220 systems.

However, they are not compatible with the ThinkPad External Battery Charger (40Y7625).

*Many factors cause battery life to differ. These include: power management, features, screen brightness, applications, battery conditioning, and other customer preferences