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Step 4Solar Panel and blocking diode
You will have to solder a BAT43 or IN4100 blocking diode to the positive terminal on the solar panel.
The BAT43 Schottky type diode is better because it has a lower voltage loss, (about 0.3v) particularly important if you are charging 3 battery's like me.
The diode prevents any reverse current from the battery's happening when there is low light.
Please make sure the white or black 'band' faces away from the solar panel, you can check if you have connected the diode the correct way around by using a multimeter set to mA's or volts and see if there is any output in bright light from the panel, if not the diode needs connecting the other way around.
The BAT43 Schottky type diode is better because it has a lower voltage loss, (about 0.3v) particularly important if you are charging 3 battery's like me.
The diode prevents any reverse current from the battery's happening when there is low light.
Please make sure the white or black 'band' faces away from the solar panel, you can check if you have connected the diode the correct way around by using a multimeter set to mA's or volts and see if there is any output in bright light from the panel, if not the diode needs connecting the other way around.
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