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S24-Mini stacked
with S24-EXTBAT (optional)

S24-Mini Solar Power Supply

This tiny, lightweight solar power supply features an integrated 40WH LiFePO4 battery, and offers plug-and-play convenience for QRP stations, camping, and anything else that needs a simple, reliable 12V DC power supply. It's built into a rugged, water-resistant polycarbonate box.


State-Of-The-Art Battery Technology

  • This power supply features a built-in 40 watt-hour Lithium Iron Phosphate (LiFePO4) battery, which will provide years of safe, reliable service.
  • External battery packs can be connected in parallel to facilitate longer operating times.

Plug-and-Play Convenience

  • The S24-Mini packs everything you need into a single, easy-to-carry package.
  • Just connect a solar panel and your 12V DC devices to the side-mounted screw terminals, and enjoy convenient, reliable solar power.


  • If the integrated battery isn't enough, it's easy to attach extra external battery packs.

Made in Michigan

  • All of our products were designed in our lab at the Michigan Alternative and Renewable Energy Center in Muskegon, on the shoreline of Muskegon Lake.
  • Our printed circuit boards are manufactured by reputable supply partners in Holland, MI.


  • Solar panel: 21-22 volts open-circuit (VOC), 16.5-17 volts at maximum power point (VMPP)
  • External battery (optional): 12.8V LiFePO4 (DO NOT use any other battery chemistry)
  • Load: 12 VDC nominal; maximum load 20A
  • Connections: Bare wire or spade lugs to screw terminals


LoadPV inAux Batt
Pin 1 is common between load and external batteries.


Battery Health

  • Charge your Mini when it arrives.
  • Open the top cover and disconnect the battery before long-term storage.

S24-MINISolar24-Mini solar power supply5.6 in3.3 in2.1 in1.32 lbs$179.9518
S24-EXTBAT40Wh external battery pack with case for S24-Mini5.6 in3.3 in1.5 in1.1 lbs$79.958
S24-PV3030W PV solar panel (1.85A Isc)23.8 in13.5 in1 in6.17 lbs$59.006
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Energy Partners LLC
MAREC Center
200 Viridian Drive
Muskegon, MI 49440
Email: info@solar24.pw