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Outdoor & Recreation
Campers, Vans & 4WD's
Aux battery charging from 12V cig socket
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<blockquote data-quote="bundyjd" data-source="post: 300656" data-attributes="member: 3809"><p>Finally got back to this little project after a few weeks wandering around old goldfields up in Qld. </p><p></p><p>I picked up a Projecta IDC25 DC-DC charger on sale while I was up there so ready to start the install. I'm going to run some 8B&S twin cable from the starter battery into the rear cargo area via a 50A fuse and terminate that with an Andersen plug. On the outside of the portable battery box I have mounted another Andersen plug connected to the 100AH deep cycle gel battery terminals via a 50A fuse. So that's both ends of the system taken care of, but here's where I think I may have run into an issue....</p><p></p><p>I want to be able to remove the battery box and DC charger when I'm not using it, so preferably don't want to run any permanent ground wires to the chassis if I can avoid it. The DC charger has a single "common ground wire" and I was thinking I could hook that up to both the starter battery negative terminal (via the Andersen plug in the cargo area) and the aux battery negative terminal (via the battery box Andersen plug).</p><p></p><p>Any obvious flaws in this plan? From what I can work out the vehicle (2007 Forester X) doesn't have a smart alternator or any sort of voltage sensor between the starter battery negative terminal and the chassis ground, which I assume would normally be the reason for grounding the other connections....</p></blockquote><p></p>
[QUOTE="bundyjd, post: 300656, member: 3809"] Finally got back to this little project after a few weeks wandering around old goldfields up in Qld. I picked up a Projecta IDC25 DC-DC charger on sale while I was up there so ready to start the install. I'm going to run some 8B&S twin cable from the starter battery into the rear cargo area via a 50A fuse and terminate that with an Andersen plug. On the outside of the portable battery box I have mounted another Andersen plug connected to the 100AH deep cycle gel battery terminals via a 50A fuse. So that's both ends of the system taken care of, but here's where I think I may have run into an issue.... I want to be able to remove the battery box and DC charger when I'm not using it, so preferably don't want to run any permanent ground wires to the chassis if I can avoid it. The DC charger has a single "common ground wire" and I was thinking I could hook that up to both the starter battery negative terminal (via the Andersen plug in the cargo area) and the aux battery negative terminal (via the battery box Andersen plug). Any obvious flaws in this plan? From what I can work out the vehicle (2007 Forester X) doesn't have a smart alternator or any sort of voltage sensor between the starter battery negative terminal and the chassis ground, which I assume would normally be the reason for grounding the other connections.... [/QUOTE]
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Outdoor & Recreation
Campers, Vans & 4WD's
Aux battery charging from 12V cig socket
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