IP67 Waterproof DC-DC Converter 17-72V to 12V 5A 60W - Voltage Regulator for Trucks, Tractors, Solar Systems (Dust/Shock Proof)

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Tim_the_geek posted on r/ebike17w

This is what you need. https://www.amazon.com/dp/B0D2XP6KDD?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

IP67 Waterproof DC-DC Converter 17-72V to 12V 5A 60W - Voltage Regulator for Trucks, Tractors, Solar Systems (Dust/Shock Proof) | eaves-shop