Skip to product information
1 of 4


36v 2kWh Robot Battery LG 21700 Li-ion Cells

36v 2kWh Robot Battery LG 21700 Li-ion Cells

Regular price $299.00 USD
Regular price Sale price $299.00 USD
Sale Sold out
Shipping calculated at checkout.


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

2kWh li-ion modules in strong case! This listing is for 2kWh modules with LG 21700 cells in a robust metallic outer case. Battery is made from 110x high quality LG Chem INR21700 M50 LT cells in a 10s11p configuration to make 37v 53Ah. Beefy dual 10 gauge cables! Outer case is easy to open for removing the battery or extracting the cells. These modules are versatile! Combine 2x in series to make a high performance 72v E-bike battery! Great for stationary storage and solar systems.

Originally designed for powering semi-autonomous robots. Modules have the connector ends on the cables and have an internal BMS that is Very high Quality. To turn on the BMS you will need to connect the purple and yellow wires. Then the red and black wires will activate after a charge is applied.

Available in 2 versions (choose from dropdown menu):

  • Working module (Unmodified)
  • "Working" module (Modified BMS, with XT90 output and XT30 input)

Module Specs
Condition:  Reclaimed
Voltage:  37v
Capacity:  53Ah
Energy:  2kWh (2037Wh)
Current:  80A Continuous / 140A Peak
Configuration:  10s11p
Cell count:  110x

Size: 10" x 11" x 3.25"

Weight 25 lbs

Cell Specs
Cell brand:  LG Chem
Cell model:  INR21700 M50 LT
Current:  7.2A Continuous / 14.4A Max
Energy:  17.8Wh (C/10)
Capacity:  5000mAh / Nominal 4800mAh
Power:  35.8W Continuous / 75.2W Peak
Form factor:  Cylindrical, flat top

*** IMPORTANT SHIPPING NOTE: Need more than 2 units? Email to get an accurate shipping price before purchasing. Why? Our automatic shipping calculator sometimes underquotes heavy orders. If your order is underquoted for shipping costs we'll send you an edited order email to collect the balance due. This will only be a surprise if you don't read the full product descriptions. Only orders that are fully paid for can be shipped out.


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


    Harvesting Cells

    If you prefer to harvest the cells, you have to remove the case to extract the cells. 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. We make no guarantees that all cells will be usable. Listings that are “untested” are in unknown condition and sold as-is and cannot be returned, exchanged or refunded. These items are sold for DIY and Second Life purposes. 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.

    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.

    View full details