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 balanced temperature control PCB

Li-ion 3.6V / 3.7V 20S 72V BMS electric scooter battery accessory protection board with

Regular price $75.99 Sale price $243.99 Unit price per
Tax included. Shipping calculated at checkout.

Product Description :

Li-ion 3.6V / 3.7V 20S 72V BMS electric scooter battery accessory protection board with balanced temperature control PCB



Li-ion 20S 72V with a balanced lithium battery protection board.

Any questions please contact us!We will respond within 1 business day or less.

Convenient for customers to choose, the whole store is the same port protection board (the same port can be used as a split), the whole system is equipped with temperature control and balance function.

Our category: 1S-25S; 10A-130A.


product description

Range: nominal voltage is 3.6V, 3.7V lithium battery (including 18650, 26650, polymer battery).

Function: Overcharge protection function, over discharge protection function, over current protection function, short circuit protection function, battery balance management function, temperature protection function.

Products: 7S or more adopts Zhongying integrated scheme circuit, and 7S or less adopts single-section cascade scheme circuit.

Customization: (10 batches) can be changed according to customer requirements (except 1S-7S).


Product strength

A Class A solution (integrated circuit / single section cascade).

The product has low internal resistance, adopts heat sink, low discharge temperature rise, and is coated with three anti-paint.

Adopt China's first- and second-line MOS.




20S 72V BMS parameters





Continuous discharge current

Peak discharge current

70A  100A  130A

180A  260A  380A


Charge current

Charging voltage

70A  100A  130A


Over charge protection

Overcharge detection voltage

Overcharge release voltage

Overcharge protection delay





Balance detection voltage

Balanced release voltage

Balance current




Discharge protection

Over discharge detect voltage

Over discharge release voltage

Over discharge detect delay




Overcurrent protection

Overcurrent detection voltage

Overcurrent protection release condition

Overcurrent detection delay


Disconnect load


Short circuit protection

Short circuit protection condition

Short circuit detection delay

Short circuit protection release condition

External load short circuit


Disconnect load

Temp Protection



Inner resistance

Main circuit on-resistance


Self electricity consume

Working current

Sleep current (when the battery is over-discharged)



Working Temp

temperature range





Product Image



Wiring diagram

Use the sequence of operations:


1. The cable starts from the black thin wire connecting B-, the second wire (the thin red wire) is connected to the positive pole of the first battery, and the positive pole of each battery is connected in turn until the last red wire is connected to B+;


2. After connecting the cable, do not insert the plug directly into the BMS. Measure the voltage between each two adjacent metal terminals on the back of the plug. If the voltage of the terpolymer battery should be between 2.8V and 4.2V, the iron-lithium battery should be between 2.5V and 3.65V.


3. After correct wiring sequence and voltage confirmation, insert the BMS socket.


4. The protective board B line (blue thick line) is connected to the negative pole of the battery pack.


5. After the wiring is completed, measure whether the total voltage of the battery pack and the total voltage passing through the BMS are equal. If they are different, check again according to the above wiring sequence.





Accessory Type: Battery Accessories
Model Number: S-YT20S
Applicable battery: 3.6V/3.7V
Battery pack: 20S 72V
Interface mode: Charge, discharge / same mouth
Continuous current: 70A,100A,130A
Circuit scheme: integrated
Heat sink material: Aluminum metal plate
Thermostat: NTC thermistor


Shipping Timeframe:

US, Australia, UK, Germany, Canada: 3~5 weeks Other European Countries: 3~5 Weeks. Items will be shipped in within 4 days after payment is received. The Parcel Status Can Be Tracked 8-10 Days Later After Sending.If You Don't Receive the Item On Time, Please Take Time to Contact us.


We're not responsible for any custom duty or import tax.

 If you are not satisfied with the item you received, Please contact us for parcel return & payment refund.The returned parcel shouldbe sentback in original package in14days after the receipt.But you have to pay for the returned.We strive for 100% customer satisfaction on every sale we complete.


We are family owned business, and we have served thousands of customers from all over the world. Our products are direct from factory, so we can provide quality items at very competitive price.


If you have any question, please contact us by the contact seller now button, leave us message or send us emails. Most emails are responded within 24 business hours.

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