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BMS 2S 13A 18650 7.4V-8.4V Lithium Battery Protection Board - Electra

BMS 2S 13A 18650 7.4V-8.4V Lithium Battery Protection Board

90.00 EGP

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SKU: el-302122 Category:

BMS 2S 13A 18650 7.4V-8.4V Lithium Battery Protection Board

 

A Battery Management System (BMS) for 2S 13A 18650 7.4V-8.4V lithium batteries is designed to protect and manage lithium-ion battery packs. Here’s a detailed description and the specifications of such a BMS:

Product Description:

  • Type: Battery Management System (BMS)
  • Configuration: 2S (2 series cells)
  • Current Rating: 13A
  • Voltage Range: 7.4V – 8.4V (nominal 7.4V, fully charged 8.4V)

Specifications:

  1. Cell Configuration:
    • Series: 2 cells in series (2S)
    • Cell Type: 18650 lithium-ion
  2. Electrical Ratings:
    • Charge Voltage: 8.4V (4.2V per cell)
    • Discharge Cut-off Voltage: Approximately 5.6V – 6V (2.8V – 3V per cell)
    • Charge Current: Maximum 13A
    • Discharge Current: Maximum 13A
  3. Protection Features:
    • Overcharge Protection: Prevents overcharging of the battery cells
    • Over-discharge Protection: Prevents over-discharge of the battery cells
    • Overcurrent Protection: Protects against excessive current draw
    • Short-circuit Protection: Protects against short circuits
    • Temperature Protection: Monitors and manages temperature to prevent overheating (optional, depending on the BMS)
  4. Balance Function: Some BMS boards include a balancing function to ensure each cell in the series has the same voltage.
  5. Dimensions: Typically small and compact, suitable for integrating with the battery pack.
  6. Connections:
    • B+: Battery positive terminal
    • B-: Battery negative terminal
    • P+: Pack positive terminal (to load/charger)
    • P-: Pack negative terminal (to load/charger)
    • BM: Middle connection between the two cells

Features:

  • Overcharge Protection: Stops charging when the cell voltage exceeds 4.25V to prevent damage.
  • Over-discharge Protection: Cuts off the circuit when the cell voltage drops below 2.8V to protect the battery.
  • Overcurrent Protection: Limits the current to 13A to prevent overheating and potential damage.
  • Short-circuit Protection: Instantly disconnects the battery to prevent damage in case of a short circuit.
  • Balancing Function: Ensures equal charge and discharge across all cells, enhancing battery life and performance.

Applications:

  • Power tools
  • Electric bicycles and scooters
  • RC toys and drones
  • Portable electronics
  • DIY battery packs
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