Hand-built in Howell, Michigan

Custom Lithium Battery Packs Built in Michigan

Hand-built and tested lithium-ion and LiFePO₄ battery packs for e-bikes, marine systems, RVs, solar storage, mobility equipment, robotics and custom applications.

  • Premium lithium cells
  • BMS protected
  • Tested before shipping
48V-10Ah-18650-13S4P-Lithium-Battery-Pack

Lithium-Ion
Packs

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3.2v LifePO4 individual cell

LiFePO4
Packs

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Charger
Collection

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Featured Batteries

Custom battery engineering

Battery Packs Built for Your Application

Tell us your required voltage, capacity, dimensions, connector and operating conditions. We can help specify a lithium battery pack, cell configuration and BMS for your application.

  • Voltage and capacity requirements
  • Continuous and peak current
  • Enclosure dimensions and mounting
  • Connectors, charging and BMS protection
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