Hello:
——★1. When using solar panels, you usually charge the battery (or rechargeable battery), and a reverse discharge device should be installed in the line to avoid special situations (such as cloud cover or rainy days), discharge reversed.
——★2. For your 6V solar panel, it is more suitable to use diodes to reduce the voltage. This can not only reduce voltage, but also prevent reverse discharge.
——★3. It should be noted that the maximum output current of a 10W 6V solar panel is close to 1.7A. The diode should be a 1N53** (3A) series diode.
Supplement: The voltage drop of silicon diodes is about 0.5 ~ 0.7V, which can be selected and configured (connected in series) until the output reaches about 5 V. Just use a 0.7 V diode.
Silicon diode: This is a rectifier diodeordinary. "1N53**" is the series, such as 1N5306. Additionally, you can also use 1N5408, which has a larger current.