TheButcher Posted April 27, 2021 Share Posted April 27, 2021 I'm sure there are people here using 2nd hand panels, and while full testing them can be done with a MPPT charger / battery / load, it may be more convenient to do it with a self contained meter. I never thought about the possibility myself when I had all my panels lined up on the fence and did it the hard way - check Voc, check Isc, observe MPPT found Vmp/Imp etc - but Andy on the Off Grid Garage youtube channel came up with this meter. https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20210426201236&SearchText=ws400a Quote Link to comment Share on other sites More sharing options...
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