These are a must for solar panels or wind turbines that do not have diodes like DIY solar panels, or DC wind turbines, or hydroelectric generators.
What size diode do I need?Your diode needs to be somewhat larger than the current that is will be handling.
For solar panels, we sell the 3 Amp and 10 Amp diodes for this purpose. If your solar panel will not exceed 2 1/2 of amps of current, then the 3 amp version is fine. The 10 amp diode is acceptable for panels up to about 9 1/2 amps.
Solar panels with more charge current than this would require a larger diode (like the 40 amp diode). This larger diode can be placed in-line with the common positive wire coming from your solar panels to your charge controller to handle multiple panels at one time.
Please note: A larger diode may require a heatsink if it will be used for higher power applications (above 15 amps or so).
Looking for more information on blocking diodes?Click here to view our FAQ and installation diagram.