3S 40A BMS Board 12.6V Li-ion Battery Protection

$12.99

3S 40A BMS for 12V li-ion packs. Overcharge, over-discharge, and short circuit protection. For DIY battery builds.

Out of stock

SKU: BMS-3S-40A Category: Tag:

3S 40A BMS — 12V Li-Ion Pack Protection Board

This 3S BMS board provides comprehensive protection for 3-cell series li-ion battery packs (12.6V). Includes overcharge, over-discharge, overcurrent, and short circuit protection. Essential component for safe DIY battery pack construction.

Key Features

  • Strings: 3S (3 cells in series)
  • Max Current: 40A continuous
  • Cutoff Voltage: 12.6V (charge) / 9.0V (discharge)
  • Protections: overcharge, over-discharge, overcurrent, short circuit
  • Compatible: 18650, 21700, 26650

Safety Warning

Lithium batteries are sensitive and may pose fire or explosion risks if improperly handled. Always charge on fire-resistant surfaces and never leave unattended. By purchasing you assume full responsibility for safe handling.

Cell Datasheet Summary

Parameter Value Notes
Model
Format
Nominal Capacity
Nominal Voltage
Standard Charge Current
Maximum Charge Current
Standard Discharge Current
Maximum Continuous Discharge
Peak / Pulse Discharge
Operating Temp (Charge)
Operating Temp (Discharge)
Storage Temperature
Weight
Dimensions

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