800W 12V 24V 48V Wind Turbine With 6 Blades And Free MPPT Controller Horizontal Wind Generator For Home Use (12V with Controller)

It is a con keep your money

The media could not be loaded. FINAL EDITION - after consulting with the seller (very swift at sending out the goods and also responsive to buyers' questions).I bought it for experimenting... I suspected that the specs (most importantly, the rated power) might be far-fetched upwards. So this is my take on the 'buy and see' approach, while being prepared that retailers, or the manufacturers themselves(!), might 'tweak' the specs of their wind turbines to higher power rates in the hope to make them look more attractive for buyers. Which can work indeed, considering that many buyers won't have a clue as to how to test a generator without a full scale installation. :)Now to the facts... The package arrived two days earlier than Amazon's expected delivery date! - That is a very good sign and was a pleasant surprise for me. The turbine was pretty well packed as well. It does give you an impression of a very well made product too!I guess I was totally prepared for the 'fake', so I was not surprised at all to see a very generic User Manual included in the package - not for this specific wind turbine, but for any of them seen on sale, i.e. it is supposed to be applicable to all the types of micro-turbines originating from China - NO SPECS provided anywhere in the manual (only on the label glued onto the turbine tail). How convenient for retailers! :)Likewise, the 'free' MPPT charge controller came without any proper specification for the max sustainable Amperage specs (no additional User Manual came with it) - there are a few boxes on its label corresponding to different max amperage, one of which is supposed to be marked (ticked or crossed or dotted) for the specific value for this particular controller - but no, there is no mark or tick - nothing, just a pristine clean label. At least the voltages "12V / 24V Auto" are printed, thanks for that. So one is left with the hope that the charge-controller is still appropriate for the particular wind-turbine it came with (i.e. hoping that no mistake occurred on the part of the seller when packaging and pairing the controller with a particular turbine type, of which they sell three different ones!). - This is a shame, because if a mistake was made, this might result in either trubine's underperformance or even a fire accident (if the current from the turbine overloads and 'kills' an under-rated controller)!Before bothering with the full-scale installation, I was up to properly testing the generator on a bench in my workshop. The two types of tests I've done are as follows.1) In the first instance, I tested the generator under open and closed circuit conditions - standard for both solar panels and wind turbines. That is, I used my multimeter, with a rectifying 6-diodes bridge on the turbine output side, (i.e. no charge controller nor battery connected) for measuring either the max produced DC voltage (= infinite 'load resistance') or the max current (= zero 'load resistance'), in which cases I measured the max open circuit Voc >~ 100 V and the max closed circuit current Icc ~ 3.5 A. I used my power drill for rotating/spinning the turbine shaft and controlled the RPM up to ~ 1000 (rpm), which is slightly higher than the rated 800 rpm for this turbine. Note that with the 'cutoff' voltage through the charge-controller ~ 29V (tested and confirmed!), and the max current measured was ~ 3.5 A, one gets the apparent max wattage ~ 101.5 Wh. As usual with the electric/electromagnetic phenomena, there is a 'BUT' though - see below, please!2) With a similar setup - a rectifying bridge (plus 10000 micrco-Farad capacitor connected in parallel to its DC output, to smooth out the any remainder 'ripples' of AC) I connected the turbine (through an additional power-meter) to my somewhat discharged (60%, ~ three bars of charge) PowerOak 12V Li-Ion MPPT-controlled bank (1200 Wh max), and tried to re-charge the battery by spinning the turbine shaft at 800 rpm (the max RPM from my power drill I used with this setup = the rated RPM for this turbine) - as a result, the PowerOak displayed ~ 92 Watts of in-coming charging power, which I also confirmed by the power-meter readings which helped me monitoring the direct output from the turbine's DC (via the bridge plus the capacitor).So, it looks like it all summarises to the same conclusion: The max power one can get from this wind turbine with the provided charge controller (i.e. at max 29 V and max 3.5 A) would be 101.5 Wh. Then in a practical application to MPPT charging of a large Li-Ion battery bank (1200 Wh) it would seem one can get only about 92 Wh (max; due to losses in the charge-controller, the wires and the load/battery itself). Note that my solar panel of 310W can push up to 305W into this power-bank under the same conditions (under strong direct sunlight).Now about the BUT's! - First, it is worth noting how my external power-meter measured almost exactly 4.0A in the process of battery recharging, with the corresponding ~ 23V at the max MPPT charging power (confirmed by the voltage reading on the external power-meter). It's striking that this time the current was reaching over Icc ~ 3.5A which I got in my first test with the closed circuit.There is however another 'BUT' - more fundamental(!) in terms of the physics laws! When testing a wind turbine with whatever means one could use for spinning its shaft (say, wind, hand or a power drill), one has to always remember that the output will never be greater than the input, in terms of the energy or power... In the case of a drill being used as a 'power input' for the turbine, the generator's output will always be restricted by the original energy source - the battery or the wattage spec of the drill itself. So, in a way, my two tests are actually not so conclusive as it looks at first glance... To support this idea, one can search for and view a very instructive video on Youtube under the title "400W Wind Turbine Review and Test" by #Wind_Turbine. - You will see that a 400W rated turbine (very similar to the item I am reviewing) can produce anything in between 100W and 255 W depending on what circuit and charge-controller(s) are used. But again the guy has not seen anything over 300 W coming from it - which might be merely due to the winds being a bit too weak in his area, or turbine's underperformance indeed.To conclude, it does work indeed - produces some volts and some amperes, not all the way up to what is stated in the ad, but still... workable. So I will keep it indeed, because I do like its sturdiness, its look, and I do like how the blades are shaped - different from the crowd of other types (perhaps, even smart due to the wider and deeply curved portions closer to the wheel disk!). And I will try to use whatever power I can get out of it for my small DIY projects with the LI-Ion battery banks I assembled myself (have both 12V and 24V) but also my PowerOak bank (weather/winds permitting)... Note that on the photos you see my 'intermediate' installation, next stage would be to put it up over the roof.As for the price - it is probably fair (per Watt), considering how relatively cheap this package is in comparison with European made wind turbines on the consumer market. So I am happy to give it the solid 4 stars :) but no more! - for the generic and non-specific user-manual plus an ambiguous label on the provided charge controller, making me hesitant if I should use it at all (considering the dangers of current mismatches and high chances of a fire accident).PS: After reading quite a few other reviews of similar products (not only on Amazon), I got an impression that those buying wind turbines are... hmm... 'a little' unprepared as to what they should expect and in which wind conditions. So, they simply "buy and see", and often don't even bother to install their newly-bought "free energy" generator and actually 'see', and yet they write their reviews - like "didn't install it yet but looks solid and sturdy"... (LOL) Then there are those who do install and sort of 'test it', often do it in their shady gardens in between trees and bushes (evidenced by photos in their reviews!). And they still expect to harvest 'free energy' from the full wind power! - Can you imagine?!.. :)))

So i decided to give this turbine a go, it was much more expensive than other small turbines which had me hoping it would be okay. However it did not produce the power i was expecting, to be clear to get the rated power of this turbine requires gale force winds that would be damaging to the turbine and property. It was connected through a shunt so i can measure its output.Also the the turbines tail fin is too small and it constantly spins out of the direction of wind.After a bit of communication the seller agreed to take it back if i agreed to remove my review, having now been refunded i think it would be wrong not to give some kind of review for prospective buyers to read.As far as the seller is concerned they were helpful and responded quickly, they resolved the refund without drama.The turbine was nice looking and seemed well built, however the bearing started to fail and it became too noisy getting me complaints from neighbours. To get the rated power or even half the wind needs to be gale force, please bear that in mind. It was quite frighting to see it produce only 150w, the thing was spinning so fast i was concerned about it coming apart and hurting me or my boat.If you want just to keep a 12v battery charged up while your not using it then this turbine like all of them would work, but don't expect any usable power from any small turbine. If you need power just buy solar, it is cheaper and way more reliable and safer.I do not recommend this turbine or any turbine listed here on Amazon or Ebay, i gave 3 stars simply because the seller dealt with my refund with drama.

Works fine but don’t expect the output that it states have had it on test bed and most it will give is 201 watts you need some serious wind to even get it to that