1 Cell Lithium Battery Charging 3.7V 4.2V CN3791 MPPT Solar Panel Regulator Controller Module 5V 6V 9V 12V

CN3791Solar Charging Board

Note: This module has three input voltages of 6V 9V 12V,which correspond to the solar panel working voltage (nominal voltage) 6V 9V 12V

This is a solar charger used for single cell lithium battery maximum power point tracking (MPPT). This MPPT solar charger enables you to get as much power as possible from solar panels or other photovoltaic devices and install it in a rechargeable lithium battery. It is very easy to use,just insert the solar panel into one side of the solar charger,and then insert the battery into the other side,you can start charging!

Solar Maximum Power Point Tracking (MPPT) is to ensure that the light intensity changes and the photovoltaic cells output maximum power to make full use of solar energy. Generally,it is necessary to use a switch-mode DC-DC converter to realize the MPPT function,keeping the product of output voltage and charging current maximized (output).

The output of the solar charger is designed to charge a single polymer lithium-ion battery. The load should be connected in parallel with the battery. Each solar charger is equipped with a CN3791 power tracking battery charging circuit,and four 2-pin JST / PH2.0 connectors are preinstalled.

By default,we set the holding voltage for MPPT. Therefore,we have three versions with input voltages of 6V,9V and 12V (corresponding to the operating voltage of solar panels of 6V / 9V / 12V),which is very suitable for applications with a large voltage difference between the input voltage and the battery voltage.

When the current output capacity of the input power supply is reduced,the internal circuit of CN3791 can automatically track the maximum power point of the solar panel. The user does not need to consider the worst case. .

Note: If the CN3791 MPPT solar charger is a 9V version,you must use a solar panel with an operating voltage of 9V.

Features:

Input voltage: select the corresponding module according to the nominal voltage of the solar panel (6V / 9V / 12V)

Output voltage: nominal 3.7V full stop voltage 4.2V lithium battery Single string lithium battery charge management

Interface: 2pin PH2.0 / JST

Solar panel maximum power point tracking function

Complete charge management for single-cell lithium battery

Charging current up to 2A

PWM switching frequency: 300KHz

Constant voltage charging voltage: 4.2V ± 1%

Constant current charging current is set by external resistor

Trickle-charge a deeply discharged battery

Automatic recharge function

Charge status and end-of-charge status indication

Soft start function

Battery overvoltage protection

Working environment temperature: -40 ℃ ~ + 85 ℃

Size: 45X20X9.5mm