Solar panel test.

Submitted: Sunday, Apr 28, 2013 at 14:05
ThreadID: 101913 Views:2439 Replies:2 FollowUps:2
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Added another panel to the hilux roof and just did a simple test of amps. Have a basic mppt wellsee regulator and two auxillary batteries. Both agms with a 65amp in the engine bay and a 120 amp under the tray at the back linked with 8b@s cable. Panels are 120watt and 160watt with separate 6mm cables joined to a short legth of 8 b@s at the regulator to help carry the current of the two 6mm cables. Have two fridges one a trailblazer 60 litre and an 80 litre waeco that draw about 9 amps combined. The traiblazer is wired direct to the load of the regulator and the waeco is wired to the back battery both with anderson plugs.With both fridges running in full sun the amp reading on the panel side was 10 amps and on the battery side the reading was a little over 5 amps. I presume the amps used by the fridge wired to the regulator are consumed and therefore dont read at the battery so therefore the panels are just supplying a little more than is being used and the only way to test full output would to be run the batteries down a little over night. As the reading was a little higher on the battery side i also presume the cheap regulator is adding a little to the amps produced as well.Will do another test with the batteries down a bit to try and find maximum output.
Cheers graeme.
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