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Reviewed in the United States on February 9, 2025
It automatically gave me most of the parameters, so that was good. It worked fine until I found out that the float parameter it gave me was for lead-acid batteries. And it was probably not treating my 24 volt set-up properly. The operation went fine once I knew how to set up the parameters. I was able to change the battery to lithium ion and the battery voltage to 24 volts., but no matter how much effort I put into it, I couldn't change the floating voltage from 27.4 to 28.6 volts. I found out that lithium batteries need a higher floating voltage. So after Amazon or the seller couldn't help me, I returned the unit and ordered a different but more expensive brand. Hopefully, that one will work properly.Update: The seller reached out to me again after I said I needed more detailed instructions, and I already sent the unit back. He told me that "You need to set your own custom voltage by switching the system to the user-defined interface and making the settings yourself.You cannot select the battery type" With that I probably will buy it again in the future since it handles larger voltages than the replacement I purchased, which only handles 12 or 24 volts.
Biggs
Reviewed in the United States on January 19, 2025
24 volt battery 4 400 watt panels connected series/parallel. Plug and play. Recognized my battery composition and voltage.Day 2. Everything is working as expected. My system consists of 4 400 watt panels, this controller 2 200ah lifepo4 batteries and a 3000 watt pure sine wave inverter.Day 3. Steller controller. Charging perfectly. Customer support very quick to respond. I'm changing my score to 5 star at this date1 week. Solid charge controller. It is working flawlessly. I like the temperature sensor and it's length of wire. 5 star still
Sylvie Gariépy
Reviewed in Canada on September 22, 2024
👍
Yehuda G.
Reviewed in Canada on June 29, 2024
It’s ok..when it works. I use it on my off grid property and it’s not reliable at all.
Lee Gillis
Reviewed in Canada on May 19, 2024
Works very well.
Emeille Dicks
Reviewed in the United States on October 26, 2024
It had it for a month. It is not mppt but pwm and it burnt out with two 200w panels after a month
S. Rohleder
Reviewed in the United States on October 2, 2024
Upgraded from the OOYCYOO 40 Amp model because I could not get in to change battery type, voltages etc. No user manual came with the 40. Both are advertised as 12/24 volt operation. This one has a manual and I got into the setup function, but it only displays 12 volt options. I have a 24 volt battery pack which it detected but the FUL (disconnect PV cells when batteries are full) will only adjust to 20 volts... not good for a 24 volt battery. Also never shows charging in progress even with good input available from the PV array. Manual is very joyful but useless.
Mick Childers
Reviewed in the United States on September 7, 2023
Very rugged and looks to be very efficient.
Wendy Lloyd
Reviewed in Canada on August 26, 2023
Cottage solar system.
Peter
Reviewed in the United States on July 26, 2023
I had to return 2 other controllers because they refused to send amps to my LiFePO4 batteries. Great if you need a charge blocker. The oocycoo was cheaper and had a higher amp rating and it actually works. Amazon might blacklist me if I had to return a third one. Connecting was easy. You only input one parameter if you don't use the load. Don't be bummed by the tiny print 3 by 3 inch manual because you only need it for one thing. If it lasts as well as it started my 5 star rating will be completely justified.EDIT Tested in full sun. Only 18 amps. MPPT controllers are supposed to significantly better. Is this just hype?? Connected 20 year old obsolete Xantex designed for lead-acid batteries under the same conditions. It produced 25 amps. I will return my third MPPT. Keep Xantex until it dies from old age. Get more amps with more panels.
J. Wright
Reviewed in Canada on May 30, 2023
Bought this charge controller Sept 8 2022 and left it in the box while I built my off grid cottage. Took it out to hook it up and it completely dead, not a glimmer of life. Tried to contact the company and can't find the address or phone number anywhere. Need customer service!
Real scanner for the price very professional
Reviewed in the United States on October 5, 2023
It works really good I’ll recommend also is a true mppt no doubt about that also you can see al the data at once and the best is the price
Florider
Reviewed in the United States on September 4, 2022
This charger looks top notch and works really good. If it doesn't, you need to contact support and from that point on, good luck! You may get an 80% refund if so. I have one that's been working for over a year without any issue though.
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