Connect the solar panel but don t connect the batteries.
Lithium mppt solar charge controller cn3722.
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You will be able to hear them click when they are fully turned.
The charge current is set by an external sense resistor r cs across the csp and bat pins.
First turn the voltage pot fully anti clockwise and turn the mppt pot fully clockwise.
2 4 series lithium battery or lithium iron phosphate battery can be adjusted by external resistance.
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Connect a voltmeter across the battery terminals.
12v mppt solar panel controller cn3722 3s lithium li ion 18650 battery charge controller module.
Turn the mppt pot anticlockwise until a voltage reading appears and the led.
Suitable for 2 4 series lithium battery or lithium iron phosphate battery lithium battery 4 2 2 string 8 4v.
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Module for solar charging lead acid or lithium battery applications.
Testing of a standard ebay china cn3722 5a mppt solar dc cc cv solar controller converter charger regulator power supply.
Lithium mppt solar charge controller cn3722 12v solar shed duration.