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Server Battery Li-ion 51v 6Ah 306Wh

Server Battery Li-ion 51v 6Ah 306Wh

Regular price $49.00 USD
Regular price $150.00 USD Sale price $49.00 USD
Sale Sold out
Shipping calculated at checkout.


Shipping to Lower 48 USA states only via Fedex Ground Shipping. No international shipping including Hawaii, Guam, Puerto Rico. Non-USA customers click here.


Reclaimed Server Battery li-ion 51v 6Ah 306Wh for DIY use. These contain high quality Panasonic cells. Built in fan + labyrinth flame arrestor. These packs are untested, may have some cosmetic blemishes from storage.


    • Capacity: 6Ah / 306Wh
    • Voltage Range: 40 - 57.4vdc
    • Nominal Voltage: 51.1v
    • Nominal Power: 4.2Kw
    • Storage: 35C
    • Ingress Protection:  IP20
    • Built in Fan + Labyrinth Flame Arrestor
    • UL Listed

     *** IMPORTANT SHIPPING NOTE: Our automatic shipping calculator sometimes underquotes heavy orders. If your order is underquoted for shipping costs we'll send you an edit email to collect the balance due. Only orders that are fully paid for can be shipped out. Need more than 2 sets? Email to get an accurate shipping price before purchasing.


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

      Watch this video to learn about these packs:


      Harvesting Cells

      If you prefer to harvest the cells, you have to remove the rubber (if any) around the cells and extract the cells as shown here. You'll have to cut and clean the Nickel interconnects using snips.

      Once the cells are out and clean you will have to test them using a charger like this.



      Note that these are reclaimed packs, so the actual cell voltage you receive may be lower than the label shows. These items are sold for DIY and Second Life purposes. Listings that are “untested” as sold as-is and cannot be returned, exchanged or refunded. We make no guarantees that all cells will be usable. Even when sold as “new”, “NOS”, or “like-new”, they may be in less than perfect condition. Buyer is responsible for proper cell recycling/disposal. Sold as-is. No refunds.

      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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