The Lenovo 5B11H56398 is an internal rechargeable lithium-ion battery for compatible ThinkPad laptops. It is listed for the ThinkPad L14 Gen 5 and L16 Gen 1, where it serves as a replacement battery to restore portable power.
Its energy capacity is 57 Wh, with a charge capacity of 5040 mAh and a voltage of 11.31 V. The listed battery type is LiPo. These ratings describe the energy and electrical characteristics of this part.
Designed to fit inside the laptop, the battery provides power away from an outlet; it is not an external power bank. Compatibility is limited to the listed ThinkPad models.