3S 60A Li-ion BMS Protection Board with Balancing | 12.6V 18650 Lithium Battery Charger Module | High-Current BMS for DIY Packs, E-Bikes, Solar
Product Overview
High-current 3S 60A Li-ion BMS (Battery Management System) with active balancing for 3-series (3S) 18650 battery packs (nominal 10.8–12.6V). Provides cell balancing, over-charge, over-discharge, over-current and short-circuit protections to keep your DIY battery packs safer and more reliable.
Key Features
- Designed for 3S (3-cell series) Li-ion / LiPo / 18650 packs
- High discharge capability: 60A (peak)
- Active cell balancing circuitry for improved cell longevity
- Protections: overcharge, over-discharge, over-current, short-circuit, thermal
- Standard B– / B1 / B2 / B+ balance terminals and P– / P+ output
- Compact, PCB-mounted for easy integration into DIY packs
Specifications
| Battery Type | Li-ion / LiPo / 18650 |
| Series | 3S (3 cells in series) |
| Nominal Voltage | 10.8V (3 × 3.6V) |
| Charging Voltage | 12.6V (full charge) |
| Continuous / Peak Current | Up to 60A (peak rating — see notes) |
| Protection | OVP / UVP / OCP / SCP, balancing |
| Terminals | B–, B1, B2, B+, P–, P+ |
| Dimensions | (varies by supplier—verify board size) |
Typical Uses / Applications
- DIY 3S 18650 battery packs for portable power banks
- High-current 12V Li-ion systems for robotics and amplifiers
- Prototyping battery packs for e-bikes and scooters (concept builds only)
- Solar DIY storage (12V Li-ion backups)
- RC packs, LED lighting packs, UPS modules and backup power
- Battery repairs and rebuilding (use with care and matched cells)
Wiring Diagrams & Quick Hookup
Use the diagrams below as a reference when building a 3S pack. Always verify polarity and cell order before connecting.
Basic 3S wiring: B–, B1, B2, B+
Wiring with main switch, charger port & load
Quick hookup summary: B– = battery negative end (Cell1 negative), B1 = connection between Cell1+ / Cell2–, B2 = connection between Cell2+ / Cell3–, B+ = battery positive; P– / P+ = pack charge/discharge terminals.
Warning: Lithium-ion cells are high-energy devices. Improper handling, incorrect wiring or charging with unsuitable chargers can cause overheating, fire or explosion. This BMS is a protection aid — it does not remove the need for safe battery construction and handling.
- Use matching cells only: same model, age, capacity and internal resistance.
- Do not mix old and new cells.
- Verify cell voltages before assembly: cells should be within ~0.05–0.10V of each other before connecting.
- Confirm wiring order & polarity: B– → B1 → B2 → B+. Incorrect wiring may permanently damage the BMS and cells.
- Use a proper 3S CC/CV charger (12.6V): never attempt to charge a Li-ion pack with a generic unregulated supply.
- Do not exceed current rating: heavy continuous loads require thicker cables, proper fuses and adequate cooling.
- Do not use swollen, punctured, or damaged cells.
- Test new packs carefully: test with a small load first and monitor cell temperatures and voltages.
- Charge under supervision: avoid leaving charging battery packs unattended, especially during initial cycles.
- Enclose batteries safely: use non-conductive housings and isolate terminals to prevent shorts.
- Recycle cells responsibly: follow local laws and battery recycling guidelines.
Package Includes & Item Specifics
- 1 × 3S 60A Li-ion BMS Protection Board with Balancing
- Brand: Unbranded / Generic
- MPN: Does Not Apply
- Model: 3S 60A Li-ion BMS
- Battery Type: Li-ion / LiPo / 18650
- Series: 3S (3 cells)
- Voltage: 12.6V Max
- Continuous Current: 60A (peak)
- Features: Overcharge, Over-discharge, Over-current, Short-circuit, Balancing
- Condition: New
- Country/Region of Manufacture: China
Search Keywords
3S BMS, 60A battery protection, 12V Li-ion BMS, 18650 BMS board, lithium battery balancer, DIY battery pack module, high-current BMS, e-bike BMS, solar battery protection.
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Important: Always verify wiring before applying power. Use appropriate fuses and cable gauges for high-current applications.