I have a 24V truck and a house built inside a semi-trailer, the house is set-up on 24V 240AH AGM batteries. I have previously asked about adding solar to this but this concerns charging the house batteries from the truck alternator when driving, DC to DC. Am I able to use an MPPT to control the cha…

Yes, that is the case. Thanks for your help :slight_smile:

Follow-up question. How do “isolated” and “non-isolated” converters differ? Oops, found this: This article answered my question. [image] Victron DC to DC Orion Chargers. Isolated or Non Isolated ? Which is right ?... Victron Energy Orion-Tr Smart DC-DC Chargers The Victron Orion-Tr Sm…

On non-isolated the input and output negative connections are common inside the unit. The negative connection is then made to one of the batteries or chassis. The starter and domestic batteries need to have a common negative, either directly connected or both connected to the chassis. This is the ro…

To the best of my knowledge the truck and trailer are completely separate units. The trailer is protected with its own RCD and the truck negative goes to the truck chassis.

MPPT for charging from truck?

DIY

pwfarnell 17 January 2025 09:12 2

Is the alternator charging a 24V starter / engine / chassis battery. If so then you need to have a DC to DC charger such as a Victron Orion 24/24/17.

dc-converters/orion-tr-smart-non-isolated

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MPPT for charging from truck?

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