Description

The 3S 20A BMS (Battery Management System) is a robust battery protection board designed for Lithium-Ion (Li-ion) and 18650 cells. It manages 3 cells in series (3S) with a fully charged voltage of 12.6V.

With a discharge current capacity of 20A, it is ideal for medium to high-power applications such as e-bikes, robotics, solar storage, and DIY battery packs.

The board offers overcharge, over-discharge, overcurrent, and short-circuit protection ensuring safe operation. It also features cell balancing, extending battery life and maintaining performance.

Features and Specifications

• Battery Type: Lithium-Ion / Li-ion 18650

• Configuration: 3S (3 cells in series)

• Overcharge Protection: ~4.25V ± 0.05V per cell

• Over-discharge Protection: ~2.5V ± 0.05V per cell

• Continuous Discharge Current: 20A

• Peak Current: 30A (short duration)

• Short Circuit Protection: Yes

• Balancing Function: Yes

• Nominal Pack Voltage: 11.1V (12.6V full charge)

• Applications: Robotics, solar projects, e-bikes, power tools, DIY packs

Package Includes

• 1 x 3S 20A BMS Board