Lenovo Battery Internal 3 Cell 51.5Wh LiIon BYD

Lenovo 5B11M90084 is an internal Li-Polymer battery for compatible Lenovo laptops, designed for replacement inside the listed models. Its three-cell configuration helps identify the battery type when checking a match.

It has a stated capacity of 51.5 Wh (4425 mAh) and an output voltage of 11.64 V. These ratings describe the electrical configuration of this part.

The listed compatible models are ThinkPad Z13 G1 (21D2/21D3) and ThinkPad Z13 Gen 2 (21JV/21JW).