I have a large 4V battery (1350Ah and 320lbs) that I would like to use as a standalone power source in my garage. I have seen some DC-DC converters for $10 that will allow me to run a ~35 watt load but I would like to be able to use more like 300-400 watts.
What would be the best way to do this? I understand that adding more batteries to get the voltage up to 12V would be the easiest but that isn't an option.
I asked him to make another thread as it's own topic.
But that doesn't change the fact that I don't see this happening.
The conversion losses are going to be huge and 400W represents probably a 150 - 175A draw from that battery. It's non-trivial to design a switching inverter like this.
My obvious lack of understanding has lead me to believe that if a small converter is possible, then so is a larger one. 150A does sound like a lot, but it is less than what would be going through a common 2000W inverter (12VDC to 120VAC). Is the difference because I want ~150A from DC to DC vs DC to AC?
120VAC from a 4VDC battery
Posted - Apr 24 2014 : 11:43:22 PM
