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  1. bpenn1980

    12v system thoughts

    A little overdue, but some follow-up with pictures! I ran this while on a trip a couple weeks ago and didnt seem to be any issues. Will use it again tomorrow on another trip. So far so good. Engine compartment Flooded lead acid starter battery #1 I made a bracket to mount the isolator to...
  2. bpenn1980

    12v system thoughts

    Appreciate everyone's help here. Getting close to having this all set up. Did a test run yesterday without solar and it appears to be running perfectly. Will hopefully have it buttoned up by next weekend and will try and post up some pics.
  3. bpenn1980

    12v system thoughts

    Indeed! Thank you! Yep, already have the solar controller. I just had a freak out I missed something obvious
  4. bpenn1980

    12v system thoughts

    Well, I've gone and got myself confused (or spotted a limitation in my chicken scratch design) I was thinking of doing as suggested and wiring my solar output to the LFP battery and not using solar to charge either starting battery. Ideally, I'd want solar to run through the DC to DC...
  5. bpenn1980

    12v system thoughts

    This is all super helpful. Thanks for typing it up. Regarding the SBI212D, I figured since it has 200amp rating it would work better in high amp "jumping and winching" situations. I think it only opens at 13.2v+ and closes at 12.7v, so I thought the primary starting battery would be protected...
  6. bpenn1980

    12v system thoughts

    Got it. Yes, the orion device "opens" at alternator voltage. I thought the solar would hit that voltage and open the flow to the LFP (once starting batteries are full), but I might be thinking about it wrong.
  7. bpenn1980

    12v system thoughts

    Solar going to 2nd starting battery just to scratch the redundancy itch and prioritize starting vs cold beer. I can wire it the other way if it looks like the LFP is draining faster than expected. Panel is expensive, yes. No smart alternator on the 80. Monitoring the batteries will be new for...
  8. bpenn1980

    12v system thoughts

    Thank you for the recommendation on Victron. I think the bluetooth connectivity and displays will be useful. I've revised the design slightly and updated the below items: Redarc SBI212D to isolate starter batteries Victron Smart Solar MPPT 75/15 to control the solar panel into the start...
  9. bpenn1980

    12v system thoughts

    Showed 14.6 volts at cold idle, so maybe 1,000rpm
  10. bpenn1980

    12v system thoughts

    Yes, that's right. Link below. TF65 12vDC Truck Refrigerator with Freezer - https://truckfridge.com/collections/12v-refrigerator-models/products/tf65-12v
  11. bpenn1980

    12v system thoughts

    I'm planning to have a controller between starting batteries and LFP, so check that box. I'll check alternator, but replacing with new shortly as PM. Will rebuild old for spare. Probably 3 days parked is a good estimate at the moment.
  12. bpenn1980

    12v system thoughts

    @e9999 , @spressomon The fridge wattage is for 24hr, but the fridge I'm considering is made by Indel, sold as Truck Fridge in US. Those numbers are for the 65L. I may do 49L. Not sure. Nothing bought yet. I was thinking it'd mount on top of my drawers and I'd weld a cage to keep it...
  13. bpenn1980

    12v system thoughts

    Hi all, First off, I've never had any trouble running a single 27f flooded battery hooked up per factory. Life was simple. No accessories, no need for power. All of that is changing now with my kids getting into the sweet spot for camping/hunting/exploring. With my kids in tow, I want more...
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