My Solar Panel Has Voltage But No Amps

Simply touch the solar panel leads with the multi meter probes matching their corresponding polarity red to red black to black.

My solar panel has voltage but no amps.

The missing power is not lost to inefficiency of the controller it is never produced. Solar panel produces volts but no amps. It sounds like you have wired the new panels backwards to the rest of the array. Scroll to continue with content.

It was all going so well. Solar panels wired backwards to vs to parallel connections act like a dead short solar panels are just a bunch of giant diodes connect them in the wrong polarity the panels will simply be a large set of diodes connected backwards and take current from the rest of the array. Connect the ve solar controller output lead to the ve battery terminal. It may be that you can never get more than 12 13v.

This 12v 5w solar panel was intendeds to charge a lead acid battery that in. Volts but no amps from a small solar panel reply to thread. Discussion in general electronics discussion started by jim n mar 7 2013. Measure the solar panel controller output voltage try to get maximum voltage by angling the panels.

Zero power output no power low voltage issue. Try disconnecting both the panel from the regulator and the regulator from the battery then reconnect them battery to regulator first then panel to regulator. Since power watts is volts x amps only 12 18 66 7 of the potential power is harvested. Measure the battery voltage.

Some exceptions may apply based on panel type. If this doesn t work try doing this again but only this time first reconnect the panel then the battery. All of the panel s amps are available but only 12 of the panel s 18 volts. Calculate the current in amps by dividing power in watts by the voltage in volts.

Mar 7 2013 1. If it is proceed. Hopefully it is less than the solar panel controller output voltage. It s also possible that one solar panel in your pv array failed.