Lenovo Battery 4 Cell 15.52V 56Wh

Lenovo 5B11D96865 is an internal replacement battery for compatible laptops, identified by Lenovo as model L21B4PD0.

Its lithium-polymer chemistry and four-cell layout describe the battery’s construction. The listed specifications are 3608 mAh, 56 Wh and 15.52 V. Lenovo documentation gives 54.7 Wh and a weight of 209 g for this FRU, so the reported energy capacity differs between sources.

Listed compatible models are ThinkBook 13x IAP G2 (21AT), ThinkBook 13s G4 IAP (21AR/21AS) and ThinkBook Plus G4 IRU (21JJ). It is intended for internal installation in laptops from this list.