ista breeze i 700 on the off grid man cave

using lithium batterys this little turbine i 700 ista breeze is charging in low wind 20 km per hour using a chinese mppt charge controller impressive results

[@nhikoid]

Fascinating video Reggie. I too, had looked at that MPPT controller on Amazon. But there are so many negative reviews about cheap mppt controlllers I decided to give it a miss. Glad to see that it's performing for you but I ( an you I'm sure ! ) will be interested to see how durable it is, especially when it gets real blowy out there. I'm sure you'll do well with your i1500. My one has been up for a year now ( 24 volt into 12v bank with DIY controller ) and it performs really well.

[@offgridgarage]

it is only good for small turbines 400 watt 12v max 800 watt 24v max ceiling voltage is 80v so it is not a true mppt will not work with bigger turbines on startup it will lock them out meaning not allow start up

[@DomX2008]

I bought this exact mppt controller and it was trying to shove the input voltage from the turbine with no mppt control into the battery and if it wasn't for the BMS protecting it from overvoltage I would have had a fried battery, specs say it can handle up to 80v on the 3 phase turbine side but it wasn't being regulated to 24v on the battery side. Had to return as it was clearly not quality controlled and dangerous - not to mention when it worked for a brief time it performed worse than a bridge rectifier setup.

[@DomX2008]

​@@offgridgaragefor me it didn't even handle a 48v 500w turbine

[@nhikoid]

With a rectifier and diy controller you will have the comfort of knowing that your turbine is always directly connected to your battery bank so that turbine voltage is always clamped down to some extent. With those cheap ebay/ali/amaz controllers you just can't be sure what's going on and could end up with very damaging voltages. Maybe there are good ones out there but there are so few subjective reviews of these online. I hope to be persuaded otherwise cos MPPT is the best method for optimising performance.

[@offgridgarage]

@@DomX2008 i havent tested the 48v with that charge controller.the 48v one i ordered was set back to 24v settings and tested with the i 1500 it locked out the turbine from turning so i sent it back and got a midnite classic.as i was to far to stop now.to be safe with lifepo4 i will only use mppt chargers and a dump load installed.i dont think the bms will handle the bridge rectifier long term as its unregulated

[@offgridamps]

nice video, what's the highest you've seen on the i700, i use a different wind controller but works well. i guess you already know what happens when your batteries get full and bms turns off?

[@offgridgarage]

turbine will free wheel and self distruct.diversion controller is important.i700 will hit ratted speed 700 watts just need the wind to drive it.

[@offgridgarage]

in higher winds it can hit 800 watts and will but needs 50 kmh wind

[@offgridamps]

@@offgridgarage ye I have some experience with that 😂 my controller started sending 35-50v to my 12v devices, an expensive mistake, that's a nice battery bank you have !

[@offgridgarage]

with the 3 longer blades 107 cm the i 700 best day was 2 kwh per day for 2 days in a row using the cheap chinese controller 24v at my sons camp.the charge controller is still going strong lol

[@offgridamps]

@@offgridgarage 107cm damn that's pretty long, I'm running 750mm only and 650mm, I think I get more wind that you most I've seen out of my "500w" was 5.2kwh in one day but it was a very very windy day.

[@nhikoid]

How's that controller going. Still alive and performing?

[@offgridgarage]

yupper still going strong lol.getting ready to fly the new i2000 soon will have more data to come shortly

[@nhikoid]

The i2000 is 48v only I think. Are you going to run it into a 24v bank ?. Should do really well. An alternative to MPPT, albeit imperfect is to run into a lower voltage battery bank. So you'd get low wind generation. All very interesting!

[@offgridgarage]

48v turbine 48v battery lifepo4 using a classic 250 cc and ts60 for dl but im still up in the air as to 3 blade or 5 @@nhikoid

[@nhikoid]

@@offgridgarage strongly advise 3 blade. Tried 5 blade which starts spinning earlier but with notably less RPM. Far better output with 3

[@offgridgarage]

ya i too am a 3 blade fan so i will swop the i 700 3 blade to the 5 blade was feeling lazy but i absolutly agree @@nhikoid

[@Sam-yv8ze]

Dont buy chinese stuff!

[@offgridgarage]

true u get what u pay for