Using battery power to go off the City's power grid

Not sure why you want to be off grid other than during a thunderstorm?

With proper voltage regulation and filtering grid power is fine. Inverters can be noisy too. Especially under quick peak loads.  Much power thermal losses with inverters too.

Pcrhkr - what do you use for “voltage regulation and filtering grid” to make it “fine”? “Quick peak load” you do realize I’m using a 2,000 watt inverter with a 450 watt load?……And lets see your thermal loss and noise calculations….I’m getting so sick of people who just want to argue.

viber6  - if you don’t understand the the advantages of the current LIFEPo4 batteries then do more research…….!! All of your concerns have been addressed. 

I love this topic...But to me, it makes no sense to convert DC to AC in an inverter, to power a piece of HiFi thsat then takes AC and converts back to DC to run the darn thing.

If we simply run the component on pure, clean DC and simply do away with the AC to DC power supply, we would get reduced costs, smaller unit, less heat and much more efficient topology. With the increased performance and sound quality of more efficient  Class D amplification this is very doable. Who will be the first company to embrace this idea?

I agree with DC power coming from batteries and many devices running off DC there are energy and cost savings. However DC devices run at various voltages which would require specific transformers. Plus battery systems run at varying DC voltages. Many small off grid setups are 12V. Many home systems are 24 or 48V. So while it seems great in principle, pretty sure any implementation is tough and needs customization, hence 110AC.  Our off grid setup is 48v and I run class D electronics. The system uses about 50w when running which is an integrated amp, streamer, and speakers with a sub. I turn the sub and integrated amp off at night which reduces the dummy load from about 30 watts to 5 which is just the streamer.