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B-MAX Cells! 12s NMC Module 44.4vDC 200A Continuous, 400A Burst

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  • Regular price $99.50
Shipping calculated at checkout.


Shipping to Lower 48 USA states via Fedex Ground only. Plz note that we can't ship to PO boxes. No international shipping including Hawaii, Guam, Puerto Rico. Non-USA customers click here.


Perfect for car audio, similar to C-MAX cells! This 44.4v battery module has powerful B-MAX cells and can be used to make BOOMING car audio batteries or other high performance battery. In its current 12S configuration it handles 200A continuous and 400 burst, but if you take out these B-MAX cells you can reconfigure them to make a much more powerful battery! See product images for connector pin diagram.


  • Voltage: 44.4vDC
  • Capacity:  25Ah
  • Energy: 1,110Wh (1.1kWh)
  • Current:  200A Continuous / 400A Burst
  • Power:  8,800W (8.8kW) Continuous / 17,760W (17.8kWh) Burst
  • Configuration:  12S
  • Dimensions:  15" L x 6.5" H x 4.5" W
  • Energy Density: 96Wh/kg
  • Weight: 11.45kg
  • Charge voltage: 50.4Vdc



    We recommend fully charging this pack as soon as you receive it. Charger not included.


    Product video:


    Please note:
    Due to the nature of this consumable product, no returns are allowed. Please keep in mind that we cannot accept returns on these batteries. 



    These items are sold for DIY and Second Life purposes. Even when sold as “new”, “NOS”, "unused", or “like-new”, they may be in less than perfect condition. Buyer is responsible for proper cell recycling/disposal. We make no guarantees that all cells will be usable. Listings that are “untested” as sold as-is and cannot be returned, exchanged or refunded.

    If you buy a product from us and then realize you don't have, or don't want to acquire, the tool(s) or information needed to make our product(s) work for your specific build, this does not constitute valid grounds for replacements, exchanges or refunds. You are responsible for doing your due diligence before making any purchases.

    NEW YORK residents:
    On 3/2/2023 New York passed a law banning the sale of lithium-ion batteries for mobility devices that are not certified to UL 2271, and the assembly and reconditioning with cells removed from used batteries for commercial sale within the state of New York (more details here). New York residents, you are solely responsible for researching, understanding and complying with all pertinent regulatory rules, laws, statutes, and NY safety standards.

    Safety is important to us, we don't want people to get hurt or property to get damaged, especially when working with DIY and/or second-life lithium-ion batteries. All batteries everywhere are inherently dangerous, so we urge all who work with DIY and/or second-life lithium-ion batteries to take safety seriously so as to avoid causing any harm to self, others or property.

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