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Battery Testers

Battery Tester 4S 14.8V 80A Battery Protection Board BMS PCB with Balance TK4S400A For LiFePO Battery Car

US $19.17
US $29.50 -35%

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Item specifics

  • Brand Name: Hilitand
  • DIY Supplies: Woodworking
  • Model Number: LiFePO Battery Protection Board
  • Type: Vehicle Battery Tester
  • Feature: LiFePO Battery Protection Board
  • Feature 1: 4S 14.8V Battery Protection Board
  • Feature 2: Battery Protection Board
Product Description

Battery Tester 4S 14.8V 80A Battery Protection Board BMS PCB with Balance TK4S400A For LiFePO Battery Car


  • Mainly used to detect the voltage and current of each battery in the series battery pack, and to control the charging and discharging process.
  • The voltage of each battery in the battery pack is between the overcharge detection voltage and the overdischarge detection voltage.
  • When there is no short circuit in the output, the MOS tube is turned on, P+ and P- output battery pack voltage, allowing the battery pack to charge and discharge.
  • Multiple protection functions such as over-discharge protection, over-charge protection, over-current protection, and short-circuit protection.
  • Suitable for large electric vehicles such as bus, electric car, tourist car, hybrid car, etc.


Model: TK4S400A

Single Overcharge Protection Voltage: 3.75V±0.05V

Single Overdischarge Protection Voltage: 2.0V±0.05V

Protection Power Consumption Current: ≤30UA

Short circuit Protection Current: 600A

Overcurrent Protection: 450A

Short Circuit Protection Time: 500MS

Continuous Working Current: 80A

Single Balance Voltage: 3.65V

Single Balance Current: ≤ 55MA

Product Size: 118x65x4mm / 4.65x2.56x0.16in


Package List:

1 x Battery Protection Board

1 x Cable


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Return and Refund

1. You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your possession more than 7 days, it is considered used and WE WILL NOT ISSUE YOU A REFUND OR REPLACEMENT. There are NO EXCEPTIONS! Shipping cost is bear by both seller and buyer in half.
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3. We will refund YOUR FULL WINNING BID AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpress. OR, you may choose to have a replacement.
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