TPC
Wrenching Dad
- Joined
- Sep 20, 2007
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GenMax 7250 is about the same size as your Predator 3500 at about 40 LBS more. The GenMax has the desirable NEMA 14 50 plug. It's good for 5.4 KW.
GenMax noticeably a little louder. The Predator has a softer exhaust note.
The GenMax 7250 will run two RV 15K ACs. Step them in. Not as much torque in this units engine as compared to the bigger 7500 inverter generators or your RV house Onan.
Has to catch its breath as it picks up load.
Charging the wife’s car it’s happy at 25 amps/220 volts. That’s about 25 miles range for every hour charged. Clean sine wave is essential.
Portable EV chargers won't let you step up the charge while charging like the stationary EV chargers do. So you pre-set the AMPS on the charger because you're stuck with what the generator can initially handle when you slam it with a hot load. Hence: 25 AMPS,, which all things considered is pretty good out in the nowhere that everything is a million miles from.
I have 6 different portable chargers. The stand out best is the Must Start Multi Amp unit. Amazon about $300. Durable and it works as advertised.
Nice for when the wife rolls into camp with her EV, and I can run 2 ACs in the warmer months and have it out where no one can hear it.
Our much bigger 7500 generator easily handles 32 amps/220 volts giving geometrically more range per hour of charge. But it's a big, quiet beast best for at home use..
Below pic typical China generator after an hours run time. Lots of metal in the oil to be expected:
It snorts and farts as it warms up and as I add hours of running time it’s smoothing out. Doesn’t vibrate as much as the Predator 3500 and it’s delivering twice the KW. I'll check plug gap and plug quality at 10 hours. I suspect the gap is jazzed.
So if you consider this 220V compact generator with the most desirable NEMA 14 50 - 50 amp receptacle, manage your expectations.
Yeah it’s relatively cheap, compact and can to the job.
At least does what we ask of it and what I expected. Compact and kind'a powerful.
So without having the main RV generator running, and BTW the main generator only delivers 15 amps / 115 volts to outlets , I can have 220 volts up to almost 5.4 KW to do more tasks than the house Onan 5500 and HF Predator 3500 can.
But not a lot more and the Predator 3500 will still be my portable of choice. Nice and quiet, cheap and does 75% of what the RV asks for.
Like sacrificial anodes on your boat I look at these as cheap sacrificial generators. When they tap out, ya drain the fluids and toss them in the dumpster. Also:
Theirs an old Jasper in Quartsite that has a Predator 3500 boneyard. The old buzzard will get most broken 3500's fixed with used parts for $100 flat rate fee. Taillight guarantee. Ya either have him fix your HF 3500, or you can donate it.
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