Description
CN3791 Solar Chargers MPPT Solar Battery Charger 3.7V 4.2V Li Battery Charging 6V 12V MPPT Solar Charge Controller
Product Description
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 output voltage and charging current product maximized (output).
DC-DC converter to realize the MPPT function, keeping the output voltage and charging current product 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 pre-installed.
By default, we set the holding voltage for MPPT. The input voltage is 6V 12V (corresponding to the operating voltage of the solar panel 6V 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, and can maximize the output power of the solar panel, which is very suitable for applications using solar panel power supply .
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Parameter
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Input voltage
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select the corresponding module according to the nominal voltage of the solar panel (6V/9V/12V)
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Output voltage
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nominal 3.7V full charge voltage 4.2V lithium battery
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Interface
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2-pin JST connectors (or PH2.0)
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Max Charging current
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2A
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PWM switching frequency
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300KHz
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Charging voltage
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4.2V ± 1%
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Working environment temperature
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-40 ° C to +85 ° C
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Size
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45X20X9.5mm
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Features
Trickle charging of deeply discharged batteries
Automatic recharge
Charge status and charge end status indication
Soft start
Battery overvoltage protection
Battery overvoltage protection
Solar panel maximum power point tracking
Complete charge management for single-cell lithium batteries
Note
This module has an input voltage of 6V 12V, respectively corresponding to the solar panel operating voltage (nominal voltage) 6V 12V
Details Images