Battery Backup Switch for Nero 5

[Zac.Clinton]

Hi, I’m just enquiring about a little home job project I have been working on. I’m looking to create a battery backup switch for a battery back up I have for my aquarium. The battery backup is 12V and it needs to supply power when the power cuts off to four pumps which run at 24v and 1.5amps each so 24v and 6a at full load. Currently I have set an Anderson plug connection (to my battery box) with inline 10a fuse to DC-DC step up converter which is sadly rated only for max 2a (I didn’t check when purchasing). This is connected to a double pole double throw relay rated for 10A/24VDC/220VAC which is then connected to the input for the four pumps (24v 7a output power supply) and outputted to the four pumps. This is all connected with 7.5a rated power cable. My problem then is what should I do about the step up converter given it will likely burn out if I try to run this setup?

 

[Saltyreef]

I would just buy another Battery, run it in series to 24v and skip the converter if possible....