CN3791 6V MPPT Solar Charge Controller Module – 3.7V / 4.2V Lithium Battery Regulator (45x20x9.5mm)
CN3791 6V MPPT Solar Charge Controller Module – 3.7V / 4.2V Lithium Battery Regulator (45x20x9.5mm)
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CN3791 6V MPPT Solar Charge Controller Module – 3.7V / 4.2V Lithium Battery Regulator (45x20x9.5mm)

4.4 stars out of 148 reviews
(4.4)|
652 ratings

About this item

This little guy is a CN3791-based MPPT solar charger module.

MINI MPPT SOLAR LI-ION CHARGER, CN3791, DUAL 12V INPUT, 4.2V OUT

It takes 6V, 9V, or 12V input—perfect for small solar panels—and steps it down to charge 3.7V or 4.2V lithium batteries.

Cell Lithium Battery Charge 3.7V 4.2V CN3791 MPPT Solar Panel Regulator Controller Solar Panel Charger Board Controller Module I3389653845

It’s tiny: 45x20x9.5mm, so it fits just about anywhere.

Lithium Battery Charge 3.7V 4.2V CN3791 MPPT Solar Panel Regulator Controller

No brand name, but the chipset is solid.

Cn3791 Mppt Adjustable Solar Charger Panel 3.7V 18650 Lithium Battery Charger Board 6V/9V/12V Pmw Overvoltage Protection – buy the best products in the Ayzeze online store

Operating temp is -40°C to +85°C, so it’s fine for outdoor projects or enclosures.

1 Cell Lithium Battery Charge 3.7V 4.2V CN3791 MPPT Solar Panel Regulator Controller Solar Panel

MPPT means you’re getting real efficiency, not just a linear regulator.

6V 9V 12V CN3791 MPPT Solar Panel Charger Regulator Controller Board 3.7/4.2V

No UPC or EAN, but hey—it’s a no-frills module that just works.

Cn3791 Mppt Solar Charge Controller For 6V/9V/12V Li-ion Batteries - Tiny Power Manager Lithium-Ion (Li-Ion) Battery Buffers

Great for off-grid builds, battery backups, or solar hobby projects.

MPPT Solar Panel Charger Board: 3.7V/4.2V Lithium Battery Charging Module For Solar Systems From Ddmyjun, $48.23

$ 4.55
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4.4 out of 5 stars
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