question

matt-kay avatar image
matt-kay asked

DC-DC charger - charging both ways

Hi all

I’m considering the Orion-tr smart dc-dc charger for my campervan to charge the leisure batteries from the alternator, but would also like to charge the vehicle battery. Is there any product that can charge both ways, ie charge the leisure batteries from the alternator, and also charge the vehicle battery from the solar charger/shore power?

Thanks

orion-tr smart
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
hookem avatar image
hookem answered ·

Here's my plan for charging in either direction for two battery banks in a Motorhome:
1) Chassis battery at 12V ==> 24-12-30A DC-DC Smart Charger (using Remote On/Off)
2) House batteries at 24V ==> 12-24-15A DC-DC Smart Charger (using Remote On/Off)

- Each Charger is On/Off controlled from a common 12V Relay (Picker).
- The coil from the Relay is energized by the Ignition switch.
- The House-To-Chassis Charger is connected to the Relay's "NC" connector.
- The Alternator/Chassis-To-House Charger is connected to the Relay's "NO" connector.
- There's a separate ON/OFF switch to disable both Chargers, by isolating the Ground line.
dc-distribution-24v.png


dc-distribution-24v.png (272.9 KiB)
dc-distribution.png (271.4 KiB)
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.