CN3791 Solar Charge Controller Board 1 Cell Lithium Battery Charge Module<br>This is a maximum power point tracking (MPPT) solar charger for single-cell LiPo batteries.<br>This MPPT solar charger provide you with the ability to get the most possible power out of your solar panel or other photovoltaic device and into a rechargable LiPo battery.<br>Set-up is easy as well, just plug your solar panel into one side of the solar charger and your battery into the other and you are good to start charging.<br>Solar maximum power point tracking (MPPT) is to that the light intensity change, photovoltaic cells output maximum power, to make full use of solar energy.<br>Description:<br>Trickle charging of deeply discharged batteries.<br>Automatic recharge, Battery overvoltage protection.<br>Charge status and charge end status indication.<br>Complete charge management for single-cell lithium batteries.<br>The output of the Solar Charger is intended to charge a single polymer lithium ion cell. The load should be connected in parallel with the battery. Each Solar Charger comes equipped with a CN3791 power tracking battery charging circuit and pre-installed four 2-pin JST/PH2.0 connectors. Default we have set the holding voltage for MPPT. In general, need to use a switch mode DC - DC converter to realize MPPT function, keep the output voltage and charging current product maximize (output).<br>Parameter:<br>Input voltage: 6V<br>Output voltage: nominal 3.7V full charge voltage 4.2V lithium battery<br>Interface: 2-pin JST connectors (or PH2.0)<br>Max Charging current: 2A<br>PWM switching frequency: 300KHz<br>Charging voltage: 4.2V +/- 1%<br>Working environment temperature: -40 C to +85 C<br>Size: 45 x 20 x 9.5mm<br>Colour: Blue<br>Material: PCB<br>Package Contents:<br>1 x CN3791 MPPT solar panel regulator module<br>1x cable<br>Only the above package content, other products are not included.<br>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.