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100w adjustable FPVR solar controller (CN3722)
100w adjustable FPVR solar controller (CN3722):
This board is based on the CN3722 FPVR solar controller, but instead of using fixed resistor networks on the
panels and output, both are trimmer-controlled, making this board very flexible. It claims a solar panel Vmpp
range from 8-24v and output from 5-26v at up to 5 amps or 100 watts.
Several reviewers had to remove the heat sink and trim the long leads on the bottom of the board to prevent
shorts, so check that out before powering it up. In addition to setting the output voltage you need, you'll
also need to adjust the panel trimmer to match your panel's Vmpp.

5A 100W adjustable FPVR solar controller ($12 at Amazon)
CN3722 FPVR solar charge controller.pdf (in solar controller ICs)

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last updated 12/18/2025 at 19:10:06 by make_www_index.command version 2025.11.05.A