Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: jacobarber on June 11, 2026, 12:31:48 pm

Title: Safe to power an amp with a home backup battery?
Post by: jacobarber on June 11, 2026, 12:31:48 pm

I'm just throwing out a hypothetical. I have a couple of EcoFlow Delta2 batteries and was wondering if there are any concerns about using one of these to (temporarily) power an amp. So long as it can essentially provide a really clean 1800w, 120VAC @60Hz on a 13A circuit.

Title: Re: Safe to power an amp with a home backup battery?
Post by: passaloutre on June 11, 2026, 02:53:06 pm

I don't see why not, if it's clean and has the power capacity. A tube amp is just an inefficient space heater.

Title: Re: Safe to power an amp with a home backup battery?
Post by: JPK on June 12, 2026, 10:01:14 am

I've run my amp on my ECO Flow Delta Pro 3 backup system. Worked fine.

Title: Re: Safe to power an amp with a home backup battery?
Post by: stratomaster on June 14, 2026, 09:10:43 am

If you have an oscilloscope then check the output of the inverter to make sure it is a reasonably clean sine wave.  Quite a few are triangular or include voltage spikes that could pose a noise or thermal issue with the amp when used long term.