MKBMS 15-21S 120A Li-ion battery protection BMS board V1.0

MKBMS 15-21S 120A Li-ion battery protection BMS board V1.0

Regular price$58.00
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MKBMS 15-21S 120A BMS board is a full-function Li-ion battery protection board with passive balance. The continuous current can reach to 120A. It supports overcharge protection, overcharge protection, over current protection, ,over temperature protection, short circuit protection, etc. Extensive evaluation of e-bike, e-skateboard,electric motorcycles, e-scooters, electric balance cars and other fields.


Battery type: li-ion battery (standard voltage 3.7V), Balance method: passive balance

Number of battery strings: 15S-21S, Overcharge voltage: 4.25V

Overcharge recovery voltage: 4.15V, Over-discharge threshold: 2.8V

Over-discharge release: 3.0V, Passive equalization turn-on voltage: 4.125V

Charging current: 80A, Discharge current: 120A

Charging overcurrent: 200A, Discharge overcurrent: 480A

Charging protection temperature: 50°C

Charging recovery temperature: <45°C

Discharge protection temperature: 70°C

Discharge recovery temperature: <60°C

Size: 140*66*16mm

For detailed parameters, please refer to 15-21S BMS Parameter Table


1. Balance function, fully activate the battery capacity

2.  No need to adjust parameters, the operation is easier

3. Metal heat sink, more stable performance

4. With locking cable arrangement, the wiring is more secure


1 .Over charge protection

2. Over discharge protection

3. Over current protection

4. Short circuit protection

5. Temperature control protection

6. Balanced protection

7. Static protection

8. Load detection function

Application :

Electric skateboard, Electric bicycle, Smart balance car, Electric Scooter

Forklift, Cleaning car, Sightseeing car, Energy storage, Outdoor power supply

Shipping list:

1X MKBMS Li-ion15/16/17/18/19/20/21S 120A BMS Board

1X GH2.0 single head16/17/18/19/20/21/22P linewith buckle

Operational matters:

please ensure the correctness of the wiring sequence during wiring.

Please arrange the lines in order from B0-B12, B13-B21.

After the battery is fully powered, the voltage will reach a maximum of 89V. There is a risk of electric shock, so please pay attention to protection.

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