Happybuy 400W 12V Wind Turbine Generator with Controller - 3 Blade Windmill for Marine, RV, Home & Industrial Use | Renewable Energy Solution for Off-Grid Power

The fit and finish is good. Some of the fins have the ends with a little bit of uneven color but you can't tell when they are on the generator. I was impressed with the orings and the sealed bearing. I have no concerns about rain affecting the life of this unit. The overall appearance of it is very good even my wife is impressed with how good it looks. It makes good power in high wind like above 15mph and it does make some power with 8 to 10mph wind. It will not start with wind below 8mph but if it starts turning it will keep going with less than 8mph wind a little. When I get a meter to measure the amps I'll update this review. I am powering an electric fence controller with this and it is working good so far. I will need to use a solar panel for summer months when there is no wind for days. I will be buying more.welding the flange was a pain as its galvanized and had to soak in white viniger for a few days to get rid of it, then welding it was a pain too, we found out the best way we could weld it was to place the flange against the stealpipe in place to weld it then used map gas to heat it up to around 400f and then hit it with the welder, this worked. mounted it only 20 feet up against the house but that thing is never moving, just make sure to ground it incase of lightning strikes with a 10 ft grounding rod, we balanced the blades and mounted the thing dead level and used guide lines but as for low starting, what a joke, that thing barley moves untill 9 mph at least, this thing is well built and the body is metal of some kind, the charger on the other hand is probably junk, the smallest ive ever seen although they say a mppt is recomened it really is not needed, you can buy a rectifier and wire straight to the battery and use a g4 brain with ssr and 300w resistor for a dump loadI wanted to do a video so you could see how easily it picks up speed with the wind This is finally up and running. I'm 70 years old and needed help. My son put it up by himself in a short time so it must be fairly easy to do. I just got new batteries for my solar panels and added the wind generator. I've been running all lights and a signal booster off those batteries and haven't had to put on the regular charger for 2 weeks. Do you have any idea how much gas I've saved by not having to start the generator? I can hear it slightly here outside but can't hear it at all inside. I'm very pleased with this purchase. Recommend highly especially as an experiment. I'm sold (and I live off grid and solar has bad days. This only has bad minutes as the wind is more accountable than sunshine.) The hardest part was deciding where and how to get it up in the air.i think this is an attractive wind generator. It comes with everything you need to harness wind power. I like to see the green light come on to denote power being produced and recharging my battery banks. To upgrade the original wind controller, I went on Amazon and found a nice MPPT wind generator. with a big "dump load." With the upgraded wind (hybrid) controller MPPT/60A, the clear display unit showed battery DCV, amps -watts generated by the PV and/or Wind Generator; and adjust parameter if needed. It was easy to assemble the wind generator (tools provided). To install /erect it was little more challenging. What ever you attached it to or erect it on to, make sure it's STURDY (braced). According to my Amazon bought anemometer, the max wind speed was 30 mph. Thank you Amazon for all your ongoing great products and cost saving. Go Green!Ok so I bought this to supplement my solar and here are some things I found...5-10mph starts spinning10-15 produces 10-50 watts15-20 produces 50-100 watts20-25 produces 100-200 wattsNot sure above that but mine has peaked at 220wattsSome other things to mention as well make sure you have the blades balanced before you put it up and to note that one turbine alone is not going to net you alot you need 2-3 before you get the good production out of a wind turbine system as wind speeds vary constantly so keep that in mind!!I am for the most part very pleased with thisturbine and the seller for the first one I bought was defective and they sent me another that showed up before I sent the defective one back!!!I will update again later as I have more info!This thing works but to make it work you must get a different rectifier they sell them on Amazon for $12 it's a hundred amp 1200 volt three phase rectifier. If use what comes with it you geto too much drag on the windmill and then once you combine that with your batteries and your load it simply won't turn without a good wind but if you change the rectifier this sucker will spend like crazy and it will top out at about 19 20 voltsI to wanted to supplement my solar array. Not real pleased with the results. I have noticed that when I removed one of the leads from the turbine to the controller my power increases. On windy days when hooked up 3 phase it may generate .75 - .90 amps and if I disconnect one lead it will double the amperage. I am running a watt meter between the controller to the battery bank. I have rewired twice to make sure it was not bad connections.Definitely one very cool machine. Talk about very easy to install as well. I’d recommend buying the mounting pole if you can find one. I ended up going to the HardWare Store and bought 2, 10 foot by 2 inch galvanized steel piping sections and used a coupling that fit very tightly inside of each pole and was able to pound them together and then happened to find a flange that fit the cog of the wind generator perfectly. Bolted it on the pipe and ran the wires down so they popped out of the pipe just below ground level and buried the bottom end and wires in the ground. Then for reinforcement I strapped 3/4 of the pole to the side of the house with metal strapping and had it go up about 5 feet above the peak of the roof. Seems to work great but haven’t had any really strong winds yet. Time will tell. I recommend this product for sure.Total garbage, set up at my off grid cabin which costs me around $400 total for the pile and wiring set up and it doesn’t charge at all and all the bushings wore out inside of it within the first week and then started making very loud vibration noises ..and zero help or response from manufacture ... save your money DO NOT BUY !!!Got it onto 29' mast, see it going into the wind, from time to time, it slowly turns but not a mV of rechargeManufacturer does not reply to any enquiry.Very disapointedBerndPiece of garbagelConstruction of the unit seems good with an aluminum housing and a good weight to it. I had some issues with the unit and worked through them with the company. A+ for customer relations.No manual and Not making very much power at all ,