[RE-wrenches] Big Charger, Small Generator

[Jerry Shafer]

Some of the old-school charger have taps inside the box that can be
disconnected and will reduce the output of said inverter.
Fun times

On Wed, Feb 11, 2026, 7:53 AM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> 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 <
> re-wrenches at lists.re-wrenches.org> 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 <
> re-wrenches at lists.re-wrenches.org> 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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