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Heltec BMS 4-6S Capacitance Active Balancer for Car Lithium Batteries OPEN BOX

Save 46% Save 46%
Original price $52.95
Original price $52.95 - Original price $52.95
Original price $52.95
Current price $28.45
$28.45 - $28.45
Current price $28.45

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  • Effortless Balance: Automatically maintains consistent voltage across each cell in your lithium battery pack, ensuring peak performance and longevity for your car audio system.
  • Uninterrupted Power: Say goodbye to audio disruptions caused by voltage imbalances – the Heltec BMS actively monitors and balances cells, providing a stable power supply for uninterrupted listening pleasure.
  • Customizable Control: Tailor settings to your specific needs with customizable parameters, giving you full control over the balancing process and maximizing the efficiency of your battery setup.
  • Compact and Efficient: Compact design ensures easy installation in your vehicle, while its efficient operation minimizes energy loss, allowing you to get the most out of your battery capacity.
  • Future-Proof Technology: Stay ahead of the curve with advanced capacitance balancing technology, designed to meet the demands of today's car audio enthusiasts and adapt to the evolving needs of tomorrow's technology.

Heltec BMS 4-6S Capacitance Active Balancer for Car Lithium Batteries OPEN BOX

**Please reference pictures

No Original Box

In Working Condition

Open-box items are NOT subject to returns. They are sold "AS IS". All requests for returns will not be accepted.**

This Listing Includes:

  • (1) Capacitance Active Balancer


Upgrade your car audio system with the Heltec BMS 4-6S Capacitance Active Balancer, a cutting-edge solution designed to revolutionize your lithium battery experience. This advanced balancer ensures optimal performance and longevity for your batteries by actively monitoring and balancing each cell's capacitance, guaranteeing a stable power supply for your audio setup. Say goodbye to worries about uneven cell voltages or premature battery degradation, and immerse yourself in the crisp, uninterrupted sound of your favorite tunes on the road. Elevate your car audio game with the Heltec BMS 4-6S Capacitance Active Balancer – where power meets precision


  • Working voltage: 1.8V-4.5V

  • Suitable for ternary lithium, lithium iron phosphate, lithium titanite.

  • The whole battery participates in the active equalization of energy transfer at the same time

  • 0.1V differential voltage 1A equalizing current. The differential voltage is bigger than equalizing current is bigger. The maximum allowable working current is 5.5A

  • Working principle, the capacitor fit transfers the charge mover, the equalization board is connected to the battery, and the equalization is started. The original new ultra-low internal resistance MOS, 2OZ copper thickness PCB

  • Equilibrium current 0-5.5A, the more balanced the battery, the smaller the current, with manual sleep switch, sleep current mode is less than 0.1mA, the balance voltage accuracy is within 5mv!

  • The quiescent current is about 12 mA. It is recommended that the battery capacity is 60-300AH.

  • With under-voltage sleep protection, the voltage will stop automatically when the voltage is lower than 3.0V, and the standby power consumption is less than 0.1mA.

Payment Information


We accept PayPal for all ebay orders. You can use your credit through PayPal as all major credit card are accepted by PayPal.

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With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.

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