3S 25A 12.6V Li-ion Battery Protection Board – BMS Module for 18650 / Li-Po Cells

The 3S 25A Lithium Battery Protection Board is a compact and powerful BMS module designed to protect 3-series lithium battery packs (3S – 11.1V nominal, 12.6V fully charged). It supports both Li-Ion 18650/26650 and Li-Po cells, ensuring reliable operation with overcharge, over-discharge, and overcurrent protections.

Ideal for medium-power applications, the module allows up to 25A continuous charge/discharge current and features a protection cutoff at 60A. This BMS is perfect for use in DIY battery packs, portable electronics, and robotics systems that require 3-cell battery management.

✅ Key Features:

• Model: 3S 25A Lithium Battery Protection Board
• Battery Support: Li-ion 18650, 26650, and Li-Po cells
• Nominal Battery Voltage: 3.7V per cell (11.1V total)
• Charging Voltage: 12.6V
• Overcharge Protection: 4.23–4.28V (cutoff), 4.08–4.18V (reconnect), delay: 0.5–1.5s
• Overdischarge Protection: 2.72–2.88V (cutoff), 2.90–3.10V (reconnect)
• Maximum Continuous Current: 25A
• Overcurrent Cutoff: 60A
• Short Circuit Protection: YES

? Application Areas:

• DIY 3S Li-ion battery packs
• RC vehicles and drones
• Portable electronics and robotics
• Solar energy storage systems

This BMS provides robust battery management and reliable safety for 3S lithium battery applications, extending battery life and ensuring optimal charging and discharging cycles.