diy solar

diy solar

Recent content by LeRoy Christensen

  1. LeRoy Christensen

    Safety - bad reaction to off gassing, charging LiFePO4 battery

    We charge at maximum of 100 amps, but discharge around 300 +. Batteries are balanced by two different type active and passive. Sandwiched between 1 1/4" t&g flooring to prevent expansion. So any pressure inside Batteries are forced to vent.
  2. LeRoy Christensen

    Safety - bad reaction to off gassing, charging LiFePO4 battery

    We have mounted our Chinese 24v 400ah SinoPoly cells in our motorhomes bedroom. Have not started traveling yet in this new configuration but have noticed a slight metallic smell during charging and resulting bad headache while working in the bedroom. So they do gas off, with what I'm not sure...
  3. LeRoy Christensen

    400 watts in panels make 480+ watts of power. Can you explain that?

    What's your make of panel? Sometimes in very cold environments panels can produce more than rated watts. In testing new panels that are not reaching rated capacity I spray cold water on back to see if they meet specifications. If not I return them as substandard.
  4. LeRoy Christensen

    Best BMS solutions for larger (120s LiFePO4 / 384V) strings?

    Look into Orion BMS's, they are very comprehensive controllers. Also can communicate via CanBus to unlimited devices. Good luck.
  5. LeRoy Christensen

    Beware? Shenzhen GTKPower batteries - Aliexpress lifepo4

    I've seen similar results with Shun Bin 400ah cells. I'm running 8 in series for a 24v system volt ranging from 23 to 28.5. In this we are getting 395ah of usage, close enough for our purposes. I believe my issues that we have encountered are from not spending weeks balancing these cells on the...
  6. LeRoy Christensen

    Shunbin on amazon

    If you do a web search for 400ah cells, you will find it. The cells I purchased were dark green about 16kg each.
  7. LeRoy Christensen

    Shunbin on amazon

    Now on Amazon it was spelled Shun Bin ? Same company not sure, I would send you a link but Will would have a fit.?
  8. LeRoy Christensen

    Shunbin on amazon

    Not available on Amazon at this time 02-02-21. Bought 8 400ah cells last summer and found cells to be + 20~30ah over stated value. The only issue with these cell are slight imbalance during charging. My fault I'm afraid, did not spend the proper amount of time initially balancing them, now I'm...
  9. LeRoy Christensen

    AM Solar's Smart Phase Selector (SPS)

    One other thought if you attempt this installation, draw a stick line drawing (basic schematic) of your wiring. If it doesn't work on paper it's surely not working on your rig. ?
  10. LeRoy Christensen

    AM Solar's Smart Phase Selector (SPS)

    That's fairly simple if you are electrical inclined. Basically external power and generator ties directly to your device and then directs power to your circuit box based on whether external power is available or not. I would not suggest personally attempting this unless you understand AC...
  11. LeRoy Christensen

    AM Solar's Smart Phase Selector (SPS)

    AM Solar will walk you through it, not hard at all if you have easy access ATS. Make sure all AC (120V) breakers are off and batteries. Safety first!
  12. LeRoy Christensen

    looking for a good quality bms for my large 14s system

    Best way to link BMS to Victron products is CanBus communications.
  13. LeRoy Christensen

    looking for a good quality bms for my large 14s system

    I use a Orion Jr BMS, up to 16s. Lots of options with this unit, takes a PC to adjust settings. You can add extra thermal leads comes with three. Change settings to balance cells all the time if you wish, makes the device extremely versatile.
  14. LeRoy Christensen

    Need "Smart-BMS" as replacement for ShunBin Pack

    I too had a challenge picking a suitable BMS for my ShunBin 400ah batteries. Currently using Orion BMS2 Jr capable of 16s control. Found setup a challenge due to lacking information from the battery manufacturer. This Orion BMS will give information overload on your batteries and power usage...
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