SAMSUNG A51 5G SAMSUNG battery 4000mAh LI-ION OEM

This 4000 mAh Samsung battery is designed as a replacement for the Samsung Galaxy A51 5G. It stores energy using lithium-ion technology and releases it to the device when needed. Its 4000 mAh capacity determines how long the smartphone can run between charges. The battery weighs about 100 g and comes in white.

Lithium-ion batteries are among the most widely used types in modern mobile devices. They offer high energy density, low weight and a long service life across many charge cycles. Unlike older battery technologies, they do not suffer from the memory effect, so their capacity remains largely intact even when recharged frequently.

Capacity is measured in milliampere-hours (mAh). The higher the value, the longer the device can operate on a single charge.