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ROCKHEAD
Reviewed in the United States on March 31, 2025
It works as advertised but the noise level is just off the charts. This thing can wake up the dead!
Vickie L. G. Keppel
Reviewed in the United States on March 25, 2025
Using this on my solar system that has 200 V input, 40 amp output. No complaints at all except the Fan runs pretty much constantly.
John Public
Reviewed in the United States on August 13, 2024
Bought this to add to my recently expanded panel system, and am pretty happy with it. This 6.5 kW unit is ideal for people who want to bring a lot of power from their solar panels as high voltage and low current. That can be very advantageous. If you are going to use it this way, make sure you understand how ground currents work. If you don't you might get yourself electrocuted. No room for mistakes at/above those voltages.Pros:Handles 500V VocMPPT tracking works good, and responds fast.Really generates 6.5 kW of power (at least with 390 V panel setup)On/off fan keeps unit cool effectivelyDoes shut down when battery voltage reaches shutdown setting.Back light is good and does not turn off too soon.Connection terminals are pretty solidSettings good from beginning and fairly idiot proof.Cons:Fan is loud, REALLY loud. It's not obnoxious but you can hear it from 30 feet away in open air.Readings are off by about 100 WDoesn't directly tell you when in float charge mode, but it's not hard to figure it out.Buttons are a bit hard to press.You can't change the voltages (you can control current). This is actually a good thing for inexperienced users, but I would like override capability.Pay attention to:500V Voc max, not 100, 150, or 160.No Inverter. This only charges.Only works with 48V and (based on menu options) 24V systems.I initially used silicone jacketed 4 AWG pure copper welding wire rated for 150 Amps to 75 kWh battery bank. Wires got quite hot after running 120 Amps for awhile, and unit can deliver up to 140 Amps. It worked but switched to 2 AWG tinned copper. Screw up your wire sizing (too small or CCA) and you will have a fire. Don't keep your terminals tightened properly and you will eventually have a fire or fried components.Conclusions:This is my second PowMr unit. I also have a 5kW 110V MPPT controller/inverter that has been running nonstop for 13 months. I like both units. This 6.5 kW unit responds faster but the 5 kW unit runs much quieter. I like the MPPT tracking algorithm on this unit.Bottom line: if you want/have a high Volts low Amps setup then this is an ideal unit.
Gasthaus
Reviewed in the United States on December 23, 2024
Been using this unit for about three weeks and its operation is fine. The battery connection is not easy to access to be able start the nuts on the battery inputs. The battery input terminals look somewhat lean for the 140 amp battery charging current. I used AWG 2 and I am hoping the terminal is not the weak link here. Good overall usability but could use a better manual, easier connections, and Bluetooth connectivity (or any connectivity).
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