back to testing solar panels and accessories

Elejoy solar panel tester Elejoy solar panel tester:




I haven't used it much yet, and prices vary WILDLY for this unit, but it's handy for testing most solar panels.
It works with single panels up to 60 volts open circuit, and claims to test panels from 5 to 1600 watts. The
one I got came with a carrying case, jumper clips, and an MC3 connector jumper. I've seen the bare meter sell
for under $25, and the whole kit for almost $160, so shop around. Just search for "EY1600W"

This meter will test the panel and provide MPP voltage and current, Voc, and iMax.

With a Voc max of 60 volts, don't attempt to measure panels (or strings of panels) rated over 48 volts. If you
don't know your total Voc, multiply the number of cells by 0.6 - multiply by 0.4 for an estimate of expected
Vmpp. (cell voltage depends on cell chemistry - cell current depends on cell surface area)

expeced panel voltages:

cells  Voc    Vmpp
   1    0.6    0.4
  32   19.5   13.8
  33   20.1   13.2
  36   22.0   14.4
  72   44.0   28.8




Elejoy EY1600W kit ($87 at Amazon)


Elejoy EY1600W kit (various at Ali Express USA)


EY1600:



highest resolution images
last updated 05/20/2025 at 19:04:38 by make_www_index.command version 2025.05.20.B