MPPT CN3791 battery charger for photovoltaic panel input LIPO batteries

Based on the CN3791 chip and equipped with two status LEDs, this compact battery charger with MPPT (Maximum Power Point Tracking) technology allows you to recharge a 3.7 volt lithium polymer battery through a solar panel with an output voltage of 5 or 6 volts. The maximum output current is 3 A.

NB the battery and the solar panel are not included.

MPPT

MPPT is an acronym of English origin which stands for Maximum Power Point Tracker. This point varies continuously as a function of the level of solar radiation that hits the surface of the cells. This type of charge controller constantly analyzes the power (V * I) generated by the photovoltaic system, always supplying the batteries with the maximum charge current available, considerably reducing charging times.

Technical specifications

• Voltage Input: Solar Panel with 5 or 6 V output
• Output current: max. 3 A
• Output voltage: 3.7V
• Status LED: 2

- Green LED on and red flashing: solar panel connected and battery no

- Green LED on and red on steady: solar panel connected and battery charging

- Green LED off and red on steady: solar panel connected and battery charged

• Dimensions (mm): 49x31x9
• Weight: 10.5 grams

Useful documentation and links

CN3791 datasheet