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dsh1705 
Samba Member
Joined: June 11, 2014
Posts: 131
Location: Seattle, WA
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 Posted: Thu Jun 12, 2025 12:28 pm Post subject: Re: DC to DC charger install - does this work? |
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On my 95 the stud is on the floor, next to the water pump.
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David
1705.net
95 EVC
ACU,098 |
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xEVC
Samba Member
Joined: March 23, 2017
Posts: 130
Location: California
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dodgneburn
Samba Member
Joined: October 13, 2024
Posts: 4
Location: Los Angeles
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| Posted: Thu Jun 12, 2025 5:15 pm Post subject: Re: DC to DC charger install - does this work? |
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Whoa I missed that. Ok thats helpful. I'll remove the converter and take a look. Thanks! |
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CloudClap
Samba Member
Joined: December 02, 2017
Posts: 9
Location: Oregon
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| Posted: Sun Jun 22, 2025 9:19 pm Post subject: Re: DC to DC charger install - does this work? |
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| mikemtnbike wrote: |
| XanderFree wrote: |
Im Curious how your dc to dc charger works along with the onboard magnatek charger? I have a the renogy 30amp dc to dc and lifepo4 battery ready to install but how do I avoid potential issues of the magnatek and the new battery both supplying dc power to the accessories when the van is hooked up to shore power/A/C?
Thanks Much. |
I don't know of anybody that kept the magnatek after installing the DC-DC. Most installs I've seen just delete it and don't have shore power charging the battery. On mine, the shore power only goes to the 110 outlets now- not connected to battery at all. House batteries charge off solar and alternator only. |
I can see a desire for shore power --> 12V system if one is parked for a few days and had access to AC power. I RV-enabled camp site or on the road as someone's house. |
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CloudClap
Samba Member
Joined: December 02, 2017
Posts: 9
Location: Oregon
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| Posted: Sun Jun 22, 2025 9:21 pm Post subject: Re: DC to DC charger install - does this work? |
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| JWaugh wrote: |
Recent upgrade to LiFeP4 200amp/hr. Renogy dc/dc charger does use trigger wire from ignition to old solenoid switch wire. 32 feet from starter battery to battery box @ 40 amps calls for #4 wire. The #8 will get pretty hot under charge. Replaced the old Magnatek shore power converter at the same time.
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Hey! Looks like some great work. I am in the process of doing something similar to my '95. The AC/DC converter has gone out. Would you make your parts list and/or scheamit available to the community? |
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CloudClap
Samba Member
Joined: December 02, 2017
Posts: 9
Location: Oregon
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| Posted: Sun Jun 22, 2025 9:32 pm Post subject: Re: DC to DC charger install - does this work? |
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I am looking at the Orion-TR Smart 12/12-30A. I am concerned that the 50A may be too much current draw off the sotck alternator. Any concerns there? As I understand it, the Orion-XS series is for use with 'smart' alterniators. Pheraps that covers the over-draw concern if the alternator and DC/DC are coummincating how much current can be supplied. |
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CloudClap
Samba Member
Joined: December 02, 2017
Posts: 9
Location: Oregon
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| Posted: Sun Jun 22, 2025 9:33 pm Post subject: Re: DC to DC charger install - does this work? |
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I am looking at the Orion-TR Smart 12/12-30A. I am concerned that the 50A may be too much current draw off the sotck alternator. Any concerns there? As I understand it, the Orion-XS series is for use with 'smart' alterniators. Pheraps that covers the over-draw concern if the alternator and DC/DC are coummincating how much current can be supplied. |
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kourt
Samba Member
Joined: August 13, 2013
Posts: 2309
Location: Austin, TX
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| Posted: Mon Jun 23, 2025 4:35 am Post subject: Re: DC to DC charger install - does this work? |
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The Victron DCDC charger I recommend in the link above is the only model that allows configuration of amperage draw, which is fundamentally important with regard to alternator health. I have mine set to 15 amps.
The TR-Smart model does not allow amperage configuration.
Smart alternator compliance refers to the low voltage condition that smart alternators maintain while driving to reduce electrical and mechanical load.
The Orion XS Smart DCDC charger is a pay-to-play situation, and it's worth it. It's not about smart alternators in this case, but about limiting how much amperage the DCDC will draw to charge a house battery.
kourt
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2001 Eurovan Winnebago Camper |
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xEVC
Samba Member
Joined: March 23, 2017
Posts: 130
Location: California
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| Posted: Sat Jun 28, 2025 5:23 pm Post subject: Re: DC to DC charger install - does this work? |
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I think you should either do what Kourt says (go big) or just go simple, do nothing, and use the existing wiring, as I describe here: https://www.thesamba.com/vw/forum/viewtopic.php?p=10374731#10374731
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2000 Eurovan Camper (Winnebago)
Upgraded with 16" wheels |
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