I’ve used iota and power max and they don’t care very much about power quality. 

The charge verter from eg4 is 120 or 240 and has both voltage and amperage adjustments. 

Jay

On Feb 11, 2026, at 7:08 AM, Mac Lewis via RE-wrenches <[email protected]> wrote:


Hi Mark,

It will stall the generator and/or it will shutdown on overload and or trip a breaker. 

However, many battery chargers have some adjustability so you may be able to adjust it down to the sweet spot.  The way I like to do it is start with the charger very low, then slowly adjust the load up. At some point, the generator will sound like its working hard but not overloaded.  Just know that you may need to adjust this for various operating conditions (temperature is the big one) or if you are moving it around, elevation. 

Be prepared to be disappointed by the generators performance, battery chargers can be difficult loads for low quality generators. 




Mac Lewis

"Yo solo sé que no sé nada." -Sócrates


On Wed, Feb 11, 2026, 6:01 AM Mark Frye via RE-wrenches <[email protected]> wrote:

Folks,

 

If I have a larger AC powered battery charge, say 3kW and I have a battery bank that may want to pull some current, want will happen if I try to run the charger with a small, say 1.2 kW generator?

 

Thanks,

 

Mark

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