Hi first post here and I did try and search for this and found a few posts but not with the information I'm looking for, basicly I want to know if I were to connect a 12v 5a transformer to a 12v 5ah battery and the run a live and neutral from the battery to an inline 1 amp fuse and then to a barrel connector, will this work as a backup when there is a cutout for a dvr or possibly anything that requires 12v 1a, I'm aware that any power sources wired in parallel doubles voltage but when it is a battery and a wired power source will that cause the same issue? would I need to connect a 6v power supply and a 6v battery in series for this to work? And is any of this even feasible or will it go all explodey? Thanks