Lenovo Battery Internal 4 Cell 52Wh

Lenovo Battery Internal 4 Cell 52Wh (MPN 00HW028) is an internal replacement battery for selected ThinkPad laptops. Lenovo documentation links this part number to battery number SB10F46466. Product listings specify 52 Wh and 15.2 V, while Lenovo’s safety documentation records 15.20 V and a 53 Wh transport rating for the same reference.

Its four-cell lithium-polymer design provides an internal power source when a compatible notebook is used without an external adapter. The listed systems are ThinkPad X1 Carbon 4th Gen and ThinkPad X1 Yoga models from the first and second generations, including the 2016 first-generation X1 Yoga. Check the exact model and part number when selecting a replacement.