72V 84V 20S 100A 20x 3.6V Lithium ion Li-ion Li-Po Battery BMS
  • 72V 84V 20S 100A 20x 3.6V Lithium ion Li-ion Li-Po Battery BMS
  • 72V 84V 20S 100A 20x 3.6V Lithium ion Li-ion Li-Po Battery BMS
  • 72V 84V 20S 100A 20x 3.6V Lithium ion Li-ion Li-Po Battery BMS

72V 84V 20S 100A 20x 3.6V Lithium ion Li-ion Li-Po Battery BMS

  • Model: 72V 20S 100A Lion LiPO BMS
  • Shipping Weight: 1.8kg
  • Units in Stock: 0


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72V   74V   86V   100A   20S Lithium ion / LiPolymer Battery Pack BMS for E-bike
20S  100A  Li-ion / LiPO Battery protection board.
Applicable for 
72V  (3.6V * 20S) lithium battery & packs
74V  (3.7V * 20S) lithium battery & packs
84V  (4.2V * 20S) lithium battery & packs
Lithium battery (Li-ion)
Prismatic Lithium Polymer battery (Li-Po)
Technical Parameters:
Balanced current: 60mA (VCELL = 3.90V when)
Balanced for: 4.20 ± 0.05 V
Over-charged Protection: 4.2 ± 0.05 V
Over-charged Release: 4.05 ± 0.05 V
Over-discharged Protection: 2.9 ± 0.05 V
Over-charged delay: 5mS
Over-current Protecton: 100 A
Supports Max. Continuing Discharge Current: 100A
Static power consumption: less than 200uA
Short-circuit protection function: disconnect the load from the recovery.
Dimension: 182mm * 85mm *40mm
Feature: With Aluminum Protected Outer Shell and built-in Radiating board
The main functions: Over-charged, Over-discharged protection, short circuit protection, over-current protection, with Balancing function.
Interface Definition: The board have balancing function. So you may see a balance connector with 20 wires, when you do the connection for the 20S batteries, start from the first Red wire, then connect other Grey wires one by one, dont make wrong orderly as this will get the BMS burnt, check battery voltage step by step, it start from 3.6V and increases with (3.6V~4.2V) one by one to make 72V (74V) finally. Check every voltage increase with below parameter:


The 2 thick Black wires connect to battery pack Negative, and 2 thick Yellow wires for Motor / Controller ( Discharge) Negative, and 1 thin Yellow wire for charger Negative.

Charge & Discharge Positive could be the same output.

The BMS only works for Brand new good quality battery with perfect performance, it cant work for fake capacity and used batteries. 

Check every voltage on the wire step by step before plug in the connector.  Check every wire and see if the orderly are correct. Because if any of the wire get a wrong order, it will get burnt. Smoke shows board already get burnt for protecting the battery being damaged by wrong connection,  For DIY assembling. Please make sure you are capable to do the assembling before ordering! If you dont know how to do the connection, DONT ORDER IT!
  • The BMS only use for new and consistent high drain batteries. 
  • Do not use for battery packs that mix with new & half-used, or mix with different brand battery cells.
  • Do not use for used and imbalance battery cells.
  • Do not use for batteries with fake capacity.
  • Do not touch the board by hand while it is charging / discharging.
  • If you charge the battery by Lithium Balance Charger, then there's no need to use BMS.
Battery not including, the auction is for BMS only.
Balance Connector will send together with the BMS.
You may also check with charger info. from our online Categories:
Categories - Battery Chargers - Lithium eBike Charger -  84V  3A Lithium Charger
Wholesale Welcome!


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