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  1. LVLAaron

    Splitting a liion battery in half for charging?

    The main function of the BMS is not to balance the cells. They balance at maybe 35-50ma - which is nothing. The purpose of the BMS is, in my mind, a safety device. It's so you don't over charge a cell, or over dis-charge one. As Bob said... re-evaluate your plan.
  2. LVLAaron

    Did anyone else run out and buy a 48V EG4 battery after watching Wills Video?

    I've had my eye on them since Poz started reviewing them. 4 of them coupled with a to be determined Growatt low frequency inverter will be great for my new cabin/home
  3. LVLAaron

    Power Monitoring: Emporia Vue

    I am planning on selling my home and moving into a to-be-built cabin on a big piece of land (farm) I and my girlfriend own. I'm wanting to go completely off grid, it's just the two of us, and we're not big energy consumers. The big power hogs can be gas (clothes dryer, oven, water heater) I...
  4. LVLAaron

    The Safest LIfePO4 Battery Tested Plus A Big Boom from LG Pack.

    I'm not going to lie... I have a (irrational) uneasy-ness about lifepo4 myself.. I know I shouldn't.
  5. LVLAaron

    The Safest LIfePO4 Battery Tested Plus A Big Boom from LG Pack.

    Well.... the cylindrical NMC batteries were frightening.
  6. LVLAaron

    Victron DC-DC charger, and feedback before purchase?

    Good to know about the smart model. I didn't realize it had those features. I assume the same deal about overcharging is true if lifepo4 is just connected directly to the 7-pin? In which case... I can just unplug the lithium. I have it in the rear of the trailer on an anderson connector.
  7. LVLAaron

    Victron DC-DC charger, and feedback before purchase?

    Update here for future generations and the curious. Totally empty 400ah 12v battery. Attached to 12v 7 pin trailer plug. Pulls about 8 amps max. As some others have said... No real need for a DC-DC converter, unless you want to raise/limit the voltage going to your batteries. I think my truck...
  8. LVLAaron

    12v mini air conditioner?

    Totally understand. Even a few DB from a more efficient/quiet fan (which is where all of the cabin noise comes from) makes a huge difference when your camp is 15 feet long and everything you do is less than 6 feet from the fan.
  9. LVLAaron

    12v mini air conditioner?

    I'll have to see if I can find someone with one of those "quiet series" units. They're about 1200 bucks... Manageable. I can always sell my current AC, or stick it on my shed roof!
  10. LVLAaron

    12v mini air conditioner?

    That's a plan... but those low profile units are SUPER loud. :(
  11. LVLAaron

    12v mini air conditioner?

    The "field solution" is to run the heater and AC at the same time. :)
  12. LVLAaron

    12v mini air conditioner?

    Regardless, an oversized unit doesn't do much to reduce humidity.
  13. LVLAaron

    12v mini air conditioner?

    Unless it's oversized, short cycles, and the fan runs continuously in a very small space. Runs for a few minutes, water condenses on the coils, compressor stops, fan now blows the moisture on the coils into your livable space. Repeat.
  14. LVLAaron

    12v mini air conditioner?

    I found a couple that are aimed at camper vans, and built to run 12v. Which I obviously like. https://www.campervan-hq.com/products/nomadic-cooling-2000-12-24v-rv-air-conditioner-9500-btu
  15. LVLAaron

    12v mini air conditioner?

    Can't use a window. Not willing to red-green a brand new trailer. I'll just deal with it until someone makes a rooftop inverter style AC
  16. LVLAaron

    12v mini air conditioner?

    The Midea U would be perfect... but there will be no cutting holes in this camper.
  17. LVLAaron

    12v mini air conditioner?

    Would be for a 15 foot camper. Very small. It has a 13k BTU roof mount unit that's way too loud, and way too powerful for the space, so ultimately it adds humidity to the air instead of removing it. If I worked in a small unit like this, it would keep the air dry, and be quiet. 15 below ambient...
  18. LVLAaron

    Sunfun kits 260 or SOK 206

    I was going to get an SOK 206ah battery for a camper... But then I came across sunfun kits, and for about the same price, I can build a 260ah battery (I have a spare JBD bms in the shop) I'd kind of prefer the larger cells, and to put my BMS to good use... and have bluetooth monitoring... I...
  19. LVLAaron

    30 Volt 10 Amp Power Supply Broken—Dr. Meter

    Correct. I had several options (AGM batteries) and just connected shore power chargers to the AGM's
  20. LVLAaron

    30 Volt 10 Amp Power Supply Broken—Dr. Meter

    Same thing happened to mine the minute I plugged it in. Let the smoke out and that cap broke. https://smile.amazon.com/gp/product/B087CJZTXJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1...
  21. LVLAaron

    Run mini split off solar

    It's proabably 12k w/ turn-key install.
  22. LVLAaron

    LiFePo4 addition to a SLA House battery?

    Good summary! - Most of the people here are quick to say "that's stupid because XYZ!" but not understanding the use case.
  23. LVLAaron

    LiFePo4 addition to a SLA House battery?

    Hmmmm... a large capacitor... That would be interesting for starting loads...
  24. LVLAaron

    LiFePo4 addition to a SLA House battery?

    It's going to depend where your lithium cuts off on either end.
  25. LVLAaron

    Capacity test.

    Don't know. But the second piece is custom order, so I assume you could call and speak with them.
  26. LVLAaron

    LiFePo4 addition to a SLA House battery?

    If you watch the video at the start of the thread, it is explained in detail
  27. LVLAaron

    Capacity test.

    http://www.westmountainradio.com/product_info.php?products_id=cbaamp
  28. LVLAaron

    Capacity test.

    http://www.westmountainradio.com/product_info.php?products_id=cba4
  29. LVLAaron

    New Renogy 12v 100ah w/ bluetooth - $499

    Dang. They were 100 off when they first came out.
  30. LVLAaron

    LiFePo4 addition to a SLA House battery?

    It's the same, but in reverse.
  31. LVLAaron

    LiFePo4 addition to a SLA House battery?

    That's why it's interesting to have it set up like this. Lithium goes away, and you have a reserve bank there if you need it.
  32. LVLAaron

    LiFePo4 addition to a SLA House battery?

    Horsefly, Yes, the curves are different. That's WHY it works. It cycles the lead batteries very little overall, but the extra top and bottom end juice is there if you need it. I played with it for a few days with a shunt on the lead battery (and bluetooth BMS on the lithium battery) - You aren't...
  33. LVLAaron

    Upgrade LiFePO4 BMS to "Manageable"

    Do you think I'd have a problem fitting my own BMS in there? It's a JBD, but i'm not sure if the dimensions are the same. Close for sure.
  34. LVLAaron

    Upgrade LiFePO4 BMS to "Manageable"

    Nice. I have a spare BMS sitting around... 990 for a 280ah kit minus the BMS. Might have to get this.
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