diy solar

diy solar

Recent content by BretS

  1. BretS

    BMS recommendations / Advice

    Yes. I attached a pic.
  2. BretS

    BMS recommendations / Advice

    Yes, except mine is split in the middle for space reasons. The REC Active balances the 4 groups of cells just fine. I have been full-time for 8 months and it is rock solid. From mid November to mid January, with the low sun angle and short days, I only got to 100% (and therefore top balanced)...
  3. BretS

    REC BMS Connector

    Sorry, I've been on the road lately. Like said above, follow the manual and let us know how it goes. I believe they improved the manual after I downloaded mine (I had mine pretty early on).
  4. BretS

    Wiring Lynx Distributor to MultiPlus II

    My reasoning is pretty simple... I needed to put 10# of $hit in a 5# sack? space is a premium in my application, so I used them. The manual says you can use them, they don’t recommend it because additional insulation and fusing is needed - so just fuse and insulate... no problem.
  5. BretS

    REC BMS error code 10

    I'm having the same problem with error code 10. Was working fine until I shut it down to add an MPPT. Now it won't start back up. I've checked all of the external fuses, and opened the REC to check the internal fuses. I checked all 6 from the bottom on the pins, with them installed, and all...
  6. BretS

    DIY Bus Bars from copper bar

    You may want to see if Michael Caro on here is still selling the soft washers to increase the contact area. I got some from him and they work great. Top terminal in the pic has it on.
  7. BretS

    DIY Bus Bars from copper bar

    The studs are welded in, so no, I didn't "loctide" them in... and since the contact point for conducting is between the bottom of the bar and the terminal, the slight counterbore is not a problem - the nut just holds the busbar down. I sized it so one bar can carry way more than my maximum...
  8. BretS

    DIY Bus Bars from copper bar

    I used 1/4" copper bar for mine, and it worked great. Little different configuration than yours, but same idea.
  9. BretS

    BMS recommendations / Advice

    I have a REC active BMS on my 3P4S bank that I got from @the_colorist, and it works great with my Victron system. Let me know if I can answer any questions on how it works.
  10. BretS

    Seeking advice on best way to start with new RV

    I did my batteries and inverter/charger first, then solar second. You can use the one panel and SCC that you have until you see how much you use out of your bank, then I would decide whether to add to that panel, or pull it and go with new panels. I found that using my generator, and shore...
  11. BretS

    Why you cannot charge LiFePO4 below 0 degrees Celsius

    I found this thread interesting. My REC active BMS has factory default settings to charge down to -10C... at a reduced charging rate I am told.
  12. BretS

    REC BMS Connector

    You're welcome! Glad I could help some. You have to have an MK3-USB to configure the Multiplus.
  13. BretS

    Are 250w panels on a vehicle mounted system a good idea?

    I have six 350W Hanwha Q panels on mine, and plan to add four 210W panels. I just saw the above for the 215W panels from HD, but unfortunately they are sold out now...
  14. BretS

    REC BMS Connector

    1. I have mine with the Cerbo as the hub. My REC goes to a VE.Can port, and the Multi-II goes to the VE.Bus port - they are separate cables going in. My MPPTs are on VE direct ports with separate cables as well. Since your MPPT has VE.Can, you can also go to a VE.Can port with that. I am...
  15. BretS

    REC BMS Connector

    Just wanted to add this in case anyone with a REC is following this. Had to tweak the storage hysteresis to keep it from draining down too much. It has to be tightened up being in the flat part of the curve.
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