Use a li ion charger circuit between that particular solar panel and the li ion cell.
Charging 3 7v battery with solar panel.
Voltage of solar cell 1 5 x voltage of battery so 3 7v to 4 2 v of li ion is equivalent of 5 55 v to 6 3 v of solar cell.
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To charge a battery with a solar panel connect a charge connector to the solar panel.
Charge initially yes but then kaboom.
D o n t d o i t.
This item 1 cell lithium battery charging 3 7v 4 2v cn3791 mppt solar panel regulator controller mppt solar controller 3 7v 4 2v 18650 lithium battery charging 1a charger module no pin 5 5a waterproof solar charge controller 6v 12v auto 5 amp solar panel charging regulator ip67 waterproof 24hours load on for lead acid agm gel seal foolded.
Having said that it is possible to charge a li ion cell directly from a solar panel.
It s just that the solar cell must generate at most 4.
Each solar charger comes equipped with a cn3791 power tracking battery charging circuit and pre installed four 2 pin jst ph2 0 connectors.
If the cn3791 mppt solar charger is 9v version you must use the solar panel working voltage is 9v.
Then run wires from the battery to the charge connector making sure to match the positive and negative poles.
For choosing solar cell you must choose.
Divide the wattage of the solar panel by the voltage of the battery to get the number of amps your charge connector needs to handle.
So you can choose 500 mah solar cell or 1 ah solar cell.
Will a 6v 5w solar panel charge a 3 7v 4300mah battery.
A wide variety of solar panel charge 3 7v battery options are available to you such as toys home appliances and consumer electronics.
4 bay usb speedy charging smart battery charger fit for solar panel universal intelligent charger usb output port for 3 8v 3 7v 18650 26650 14500 16340 rcr123a lifeo4 1 2v ni mh ni cd aa aaa battery.
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