SKU: 79504854519

BDD 2S NCM/LFP BATT ACT BALANCER

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Description

BDD 2S NCM/LFP BATT ACT BALANCER2S Li ion Lipo LIFEPO4 LFP Lithium Battery Active Equalizer Balancer BMS 1. 2A Lithium Battery Active Equalizer Balancer Features Balance instructions: When the equalization light is on, the equalization work is turned on, The equalization light goes out, and the equalization circuit sleeps, The equalization light flashes, the string is dropped, or the circuit is faulty. Principle of equilibrium: This module is the adjacent voltage difference

2S Li-ion Lipo LIFEPO4 LFP Lithium Battery Active Equalizer Balancer BMS 1.2A

Lithium Battery Active Equalizer Balancer

Features

 Balance instructions:

  • When the equalization light is on, the equalization work is turned on,
  • The equalization light goes out, and the equalization circuit sleeps,
  • The equalization light flashes, the string is dropped, or the circuit is faulty.

Principle of equilibrium:

This module is the adjacent voltage difference equalization, the adjacent battery voltage difference reaches more than 0.1V, and the chip internally triggers the equalization work until the adjacent battery voltage difference is within 0.03V and stops working. When used on the battery pack, there is an adjacent voltage difference Triggering the equalization work, the battery pack voltage error will also be pulled back to a more ideal value, reducing battery maintenance costs.

Technical Parameters:

  • Working voltage 2.0V-4.5V, ternary lithium iron battery is universal, LTO lithium titanate battery is not applicable.

Balance current:

  • The adjacent voltage difference is above 0.1V (current is about 0.5-0.7A);
  • The adjacent voltage difference is more than 0.2V (reach the maximum equalization current 1.2A);
  • The smaller the pressure difference, the smaller the equalizing current.

Wiring definition:

  • B-, the total negative pole of the battery pack (the negative pole of the first battery)
  • B1, the positive terminal of the first battery
  • B2, the positive terminal of the second battery
  • B3...and so on. 

Accessories:

  • The wiring length is 30cm pure copper 22awg terminal line!
  • High-precision energy transfer balance, exclusive balance IC!
  • The wiring diagram of the four strings is as follows, and the number of other strings can be deduced by analogy!
  • Note (The cable plug with 13 strings or more needs to be inserted diagonally, first touch the B-pin and insert it diagonally, otherwise it may cause the board to burn out)

Note: This board is based on the principle of adjacent equalization and cannot be used as a maintenance tool. To connect the battery, it must be used with lithium battery protection. The pressure difference generated by charging and discharging triggers the work of the equalization board to achieve energy transfer balance.

Additional Information

Device Equalizer Balancer
Type 2S | Li-ion Lipo | Lithium Battery | Active
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79504854519

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Sharon A. Hall
Grantham, US
★★★★★ 1
Asurion "Assures" nothing!
Asurion has terrible Customer Support. All machine based. They give you no phone # for human interaction. Their online Support process is very close-ended. It is a checklist designed to frustrate purchasers whose issue lies outside only the very issue. My issue: I bought "Cuisinart TOB-40FR Custom Classic Toaster Oven Broiler, Silver (Renewed)" on May 26, 2024. It stated it had a 90 day warranty. So I bought an Asurion Protection Plan also to cover it for 3 years. The toaster started flaking off metal finish inside the oven over the cooking area. I tried to file a claim with Asurion and they told me the Manufacturers warranty was still in effect and I should contact Cuisinart. This despite the oven was sold with a Amazon Renewed verbiage stating a 90 day warranty. And they have nothing on their "Machine Checklist" to cover this eventuality. And I would assume I am not the only one who takes the "Renewed" route and backs it up with a "Protection Plan". They will frustrate you no end. I suspect, like many insurances, they seek to deny, deny, deny, in hopes the purchaser will give up.
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Reviewed in the United States on January 4, 2026
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Verified Purchase
Darla
Waukegan, US
★★★★★ 4
GIFT CARD AS REPLACEMENT, NO CHOICE OF CHECK OR REPLACEMENT. GOOD COMPANY
PROS: * A decent company, responsive and fair. * Allows you to buy items from anywhere you want, and buy the warranty at Amazon. * Provides better coverage than other warranties, and covers more, including breakage! CON: They don't send you a check in order to buy wherever you want, send a replacement, or give you a choice. Instead, they send you an Amazon Gift Card. That's OK if you're a big Amazon shopper, but sometimes, you can get a better price elsewhere.
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Reviewed in the United States on December 10, 2025
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Luis Ortiz
Lowell, US
★★★★★ 5
Asurion has been outstanding. Their customer service is quick, reliable, and efficient.
Every time I’ve had a problem, Asurion has been outstanding. Their customer service is quick, reliable, and efficient, and they handle claims with minimal hassle. It’s reassuring to know they actually follow through and resolve issues promptly.
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Reviewed in the United States on April 16, 2026
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Glen Armstrong
Cuba, US
★★★★★ 5
Good protection, easy process
First time filing a claim. Super easy and fast. Nice to have have protection and a smooth claims process when the unfortunate happens..
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Reviewed in the United States on April 25, 2026
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K. Shockley
Bozeman, US
★★★★★ 5
Ease of making a claim and quick return time for claim.
Very easy to work with.
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Reviewed in the United States on May 21, 2026

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