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For charging a 24v bank (bow thruster) from the 12v starter bank I’m looking at the Orion-Tr 12/24-15A (360W). But now I have to choose between isolated and non-isolated. Am I correct that the isolation is about the ground wire? But what if both my banks have their negatives connected (via the hull) already? Does it matter for the Orion?
if both your banks are already tied to the hull, then it just means you won't be able to "use" the isolation feature on an isolated power supply. It will still work fine as a power supply.
The non isolated has a fixed, non adjustable voltage too low for charging (lead ?) Batteries healthily. Better go with the adjustable, isolated device set to 13,8V plus depending on application
Thanks for the replies. So I will go for the ‘isolated’ version, although it wil not be isolated :)
The application will be: charging a 24v bank consisting out of two YellowTops (75Ah) in series from the starter-bank. Charging will only happen when the 12v starter-bank is being charged by alternator or shore-power.
Any opinions on the max. current of 15 amps for these YT’s? Is 20% of Ah.
