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Fuel Gauge for PCB of 37v Li-Ion Battery Pack

Your Price: $8.99
In Stock

Product ID # 4617
Part Number:

Quantity Discounts

5 to 20$8.72
21 to 50$8.54
51 to 100$8.36
101 or more$8.09

Note: This fuel gauge is not intend to be use as a very accurate reading of the battery pack's capacity. The battery level indication can vary by 5% depending on the capacity of the pack!



  • Apply to PCB/PCM of 10 cells Li-ion / Polymer Li-ion 37V battery pack.
  • No external power is need
  • For installation of this fuel gauge, please see below picture on wiring configuration.
  • 5 LEDs display battery pack's voltage. The voltage listed below is base on battery during discharge. (The actual voltage might vary for LED 2-4 during charging.) 
    • 1 LED Flashing = pack voltage  < 29.0V  (must recharge battery)
    • 1 LED = pack voltage: 28.8-36.0V  (battery need recharging)
    • 2 LED = pack voltage: 35.0-39.0V
    • 3 LED = pack voltage: 37.2-40.0V
    • 4 LED = pack voltage: 39.6-40.5V
    • 5 LED = pack voltage: 40.2V or higher ( battery is fully charge)
  • For 37.0V PCB withoutfuel gauge socket, please DIY with correct polarity
    • Red wire to P+ spot of PCB
    • Black wire to P- spot of PCB



  • Please check polarity before making connection to avoid damaging the module.
  • This fuel gauge is use for 37V pack only or it will damage the fuel gauge. 
  • Please make sure your selection is correct before purchasing.

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