Happybuy Wind Turbine 400W 24V Wind Turbine Generator Red Lantern Vertical Wind Generator 5 Leaves Wind Turbine Kit with Controller No Pole (400W 24V, Red)

I bought one of these on a whim to supplement my off-grid solar array with a bit of help at night. Unit appeared high quality. Powder coated motor, high quality hardware - -washers AND Lockwashers - (almost unheard of these days). Drilling was to spec and pieces went together easilly. I mounted it on a 1.25 inch black pipe with a threaded flange from an orange home chain store. The drilled holes almost match the 4 pattern flange holes. (A dremel tool helps.) Major Kudos to a Chinese company for putting out glossy photographic instructions with a professional quality English translatio!. (Much better than some I've seen.!) As noted, output can be inconsistent in gusty winds, and you really need to be honest with yourself about how much wind is blowing at the mounting location vs. the treetops. Also, as noted, the controller will track wind gusts with lag. This will work best in a location with steady winds. I don't get as much as I hoped for, but on very windy nights, my overnight battery voltage drop is noticably less than it was before I installed it. Lastly, laws of physics say the wind pressure (I.e. power) goes up with the square of the wind speed more or less, so although it will generate power at lower wind speeds, don't expect much until you get steadily above 20mph or so.

I bought this with hopes of it being good enough for a few amps on my boat in the Caribbean, I put it up and hooked the controller up first like it said. Then the generator, I didn’t notice any different in the batteries even with 15/20 knots consistently. So I ordered a mater.. hooked it up and shows it makes nothing, yet the controller is blinking away saying it is charging.. What a POS! I have installed many wind generators, but this thing is a waste of anyone’s times. Probably cost $10 to make, to hard to return, got me!

Disappointed at the quality and materials used to construct this turbine. It simply does not perform any where near it's claims as described. Do not waste your money.