I have been looking at this myself. Be sure to check spec sheets
and owners manuals
very careful. B&G Zeus (chartplotters) are 12V/24V but B&G Vulcan is 12V only.
God only knows why. There is no good reason why low powered electronics
aren't universally dual 12V/24V at this point. Same thing with NMEA
2K powered devices. Some actually are but if even 1 NMEA
2K device is 12V only you are going to need to power the NMEA 2K network at 12V.
If you are converting a boat check your existing solar
charge controller, battery charger
, and inverter
. These sometimes are dual voltage but usually are 12V or 24V specific. Replacing all three is trivial but not cheap
Also keep in mind that if your house systems are 24V but your starter(s) are 12V you will need a method to charge them. A simple ACR or A/B switch isn't going to work
. One option is to use the engine alternator
for just charging
the starter battery but it means you lose it for the house bank. Another option would be dual alternators. A third option would be a DC-DC charger
to charge the starter bats off the house bats.