I was advised for the Jaycar power supplies to at least double your expected draw as they are supposedly a bit under rated.
For my mobile setup when I expect to have mains available I have a Jaycar 13A power supply run in parallel with a SLA battery from a jump start pack. he battery will not run my heaters for all that long (The SCT heaters are greedy) but it does mean any mains interruptions are pretty much ignored.
|