4S 40A 14.8V 16.8V 18650 Lithium Ion BMS Protection Board

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Sold By: HatchnHackSKU: C09-24

Sale price₹ 182.00 Regular price₹ 195.00

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A battery management system (BMS) provides protection during the charging and discharging process, Increases the lifetime of the battery. This 4S 40A Lithium Ion BMS is a high-quality BMS for Lithium-Ion Batteries. The scope of nominal voltages of 3.6V and 3.7V lithium batteries with charging voltages ranging from 16.8V to 18.1V. The board runs smoothly with a continuous charge current of a max of 20A.

The 4S 40A Lithium Ion BMS also features connections for the Temperature probe. The module will compensate the charging or discharging current for the temperature.


  • The Board can be easily installed in a compact size or on the battery bundle itself.
  • Charging voltage: 16.8V 18.1V
  • Continuous charge current: 20A.
Charging Voltage 16.8V 18.1V
Battery 4
Overcharge Detection Voltage 4.25±0.025
Over-discharge detection voltage 2.50 ± 0.08
Operating Current 20A
Operating Temperature -40 ~ +85 Deg C
Over-Current Protection 40A
Dimensions 45x60x3.9mm
Country of Origin China

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