The device basically works, showing voltage of the connected array, and is powered by the array itself, so no batteries. The connectors are locking MC4 and need modification if you don't want to have to use mc4 tools to disconnect them each time you use it. My particular example is quit wrong on the power production, showing nearly double the nameplate wattage on a few panels i checked. Some it was accurate, so you need to a sanity check against real world. Given how inconsistent it is, it cannot be trusted as a professional tool in my opinion.
The quality of this generator is great, it gives me a sense of security in the event of a power outage, I love it!
I installed these on my sailboat to charge the house batteries. They have functioned flawlessly! I am planning to double my house battery bank and will buy 2 more of these great panels.
This 10ft ELEGRP generator extension cord is great. It's 30 amp, with 4 prongs connectors that are very well insulated takes away my fear of fire. It's perfect for safely powering up your devices when in need.
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