It's really annoying that to power a computer from battery backup, the DC of the batteries has to be converted to AC, just so the computer can turn it back to DC. Why can't they also have a DC input?
@OpenComputeDesign as the fine folks at Apple would say "Sounds like a tremendous third party opportunity".
I believe what you are looking for is called a laptop.
@Absinthe I kind of meant like for my file server.
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@OpenComputeDesign I get you. Point is, the concept exists, perhaps there is no good reason why someone doesn't power a server from DC from the get-go. Does the computer need no AC though?
@Absinthe It should only be the AC to DC power supply that needs AC. Everything else should run on DC.