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    4PCS 4S 40A Li-ion Lithium Battery BMS Protection Board with Balance Charger 14.8V/16.8V PCB Module Featuring Over-Current and Temperature Protection for Drill Motors and Power Tools

    $10.99

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    Product details

  • Brand: YFUSET
  • Color: Green
  • Product Dimensions: 0.2"D x 0.2"W x 0.2"H
  • Output Voltage: 16.8 Volts (DC)
  • Input Voltage: 16.8 Volts
  • About this item

  • Built-in protection:The 4S 40A lithium battery protection board has three layers of protection device, with over-discharge/over-current/overcharge protection, so that the drilling rig and motorcycle battery can operate within the peak voltage range
  • Efficient power management:This BMS PCB module is designed with high-precision voltage detection circuitry and MOS transistor control to maintain a stable 16.8V output and low standby power consumption
  • Compact Heavy-Duty Design:Precision welding technology provides a stable connection for 4 strings of protective plates, supporting 135W power tools and polymer lithium batteries (18650/26650) in space-constrained installations.
  • Smart Balance Charging Technology:The 16.8V charging circuit automatically monitors 4 lithium battery packs, optimizing performance across charge-discharge cycles.
  • Multi-Application Compatibility:Compatible with electric drills (≤80A starting current) and motorcycle batteries, Support 3.7V/4.2V lithium-ion battery