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BOOANT 72V 40AH Lithium Battery 20S 100A BMS for 74V 7000W Motor

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Booant batteries are an efficient, long-life energy source. Super long range, super long service life and intelligent battery management system.

Booant rechargeable batteries Management System of the high-quality lithium-ion batteries detects potential sources of error and protects cells from overloading. There is a suitable rechargeable battery for every requirement and every type of eBike, from the rack variant, via the frame battery to the integrated solution.

Battery Model: 72V 40Ah
Nominal Voltage: 72V
Nominal Capacity: 40Ah

Cell Specification : Lithium 21700 5000mAh  3.7V Cell
Cell Brand:  SAMSUNG
Cell OverCharge Protection Voltage: 4.2V/Cell
Cell Overdischarge Protection Voltage: 2.8V/cell
Cell Combination: 20 Series 8 Paralles
Cell Quantity (parallel x series): 160 pcs

BMS: 50A(Can be customized)
50A BMS Suitable Motor: Less than 72V 3500W(MAX) Motor
Discharge Cutoff Voltage (V): 56V+/-0.5V
Charge Cutoff Voltage (V): 84V+/-0.5V
Rated Discharge Current (A): 40A
Maximum peak discharge current (A): 120A
Maximum Continuous Discharge Current (A): 50A

Charger mode: CC/CV
Standard Charge Current (A): 5A
Max Fast Charge Current (A): 20A
Charge Time under 5A Fast Charge Current: approx 8--10 hours

Battery Weight: about 12.5 kg
Cycle life: ≥80% capacity after 1200 cycles.

Discharge Temperature: -20 to 65°C
Charge Temperature: 0 to 45°C

Communication Protocol: RS232/RS485/CAN/Bluetooth(Only Smart BMS)

  • Regular BMS does not have communication functions

  • Smart BMS with Bluetooth function, the mobile phone

   APP can check the cell status in real time.

  • Support RS485/RS232 communication function expansion.

  • The GPS positioning function needs to be charged

   separately, please contact us.


1. Battery Pack *1            

2. 84V 5A Charger *1       

3. AC Power Cable *1      

 4. Battery explosion-proof bag *1



Don't hit, pierce, strike, trample or throw the battery.

Don't put the battery in the water, keep the battery cool and dry condition .

Don't put the battery near a heat source such as fire or heater.

Use the specified charger that come with the battery

Don't reverse the position and negative pole.

Don't connect the positive and negative terminals with metal objects which would cause short circuit

Don't transport or store the battery with metal objects together , such as hairpins, necklaces, etc.

Everything you need to know about batteries

Are chargers from other manufacturers safe to use?

Booant chargers are adapted specifically to the Booant batteries Using a different charger may reduce the service life of the batteries

or cause other damage or malfunctions in the eBike system.

Can Booant batteries be opened to replace individual cells?

Booant eBike batteries must never be opened – not even if they are being repaired by third parties. Opening the battery always means interfering with the condition approved by Booant and entails safety-related risks. once

opened, may catch fire during assembly due to crushed or incorrectly routed cables, detached components or poor quality electrical connections.

After opening, the seal of the housing can no longer be guaranteed, so that the ingress of water or dust can lead to damage to the monitoring electronics (Battery Management System) or to the cells. 

For battery packs, we offer up to 12 months free warranty.

For Chargers, we provide up to 6 months free warranty.

If there is any problem with the battery under normal use, please contact us and we will have professionals to solve your problem.

If you need one kind of battery which can’t find in our store, we also accept customization service for you, and supports OEM service.