0basementsong 7 years ago DC to LOW VOLTAGE AC! - Here is the problem: I live off-grid, my power source is a 12V battery bank. Inverters are very inefficient and drag the battery power down quickly. I have a cordless telephone and a modem which operates on LOW VOLTAGE AC.What I need is not on the market as a unit, which is a means to convert my low voltage DC to low voltage AC (6 to 9 VAC)OR, is it possible to simply run low DC voltage directly to these units. The telephone base charges a battery, so it converts the low power AC BACK into low power DC anyway. I am assuming that there is an internal rectifier in the phone base, and just wonder if running DC directly through it will hurt it at all?