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diy solar

Recent content by atatistcheff

  1. atatistcheff

    Boost MPPTs

    Yes, that is a good point. It's not as much fun, but more practical. ;-)
  2. atatistcheff

    Boost MPPTs

    I have a 100W portable panel that it would be nice to use to charge a 24V battery. The panel Voc is 22.6V which isn't high enough to charge it. I was wondering if putting the boost on the PV output would give the MPPT enough voltage to work. Ya, I know it's not very efficient, just thinking...
  3. atatistcheff

    Boost MPPTs

    I already have the Victron 100/20 MPPT, hate to buy another charge controller. What about something like this to boost the PV voltage? https://www.amazon.com/Converter-DROK-Numerical-Adjustable-Regulator/dp/B08PV5YY55
  4. atatistcheff

    Victron Low Temp Cutoff

    Sadly many Li Time batteries don't have low temp protection.
  5. atatistcheff

    Victron Low Temp Cutoff

    So I'm still trying to wrap my head around how this works. In the case of the SBS, it communicates directly with the MPPT to shut down the charging when the temp is too low. For the wired temperature sensor, this connects to the Smartshunt in my case. I'm assuming that the Smartshunt then...
  6. atatistcheff

    Victron Low Temp Cutoff

    Ok looking closer at the wired temperature sensor I see that it works with the smartshunt as well. So let me modify the question a little. That silly little wire with temp sensors costs $32 and the bluetooth smart sensor is $40. Is there an advantage to getting the bluetooth sensor? I feel...
  7. atatistcheff

    Victron Low Temp Cutoff

    I'm putting together my vehicle mounted system and want to make sure I buy the right accessories. I'm using a Victron 100/20 MPPT and a 500A bluetooth Smartshunt. Both are located with the batteries (LiFePO4 from Li Time). My question is, what is the best/cheapest/simplest way to add a low...
  8. atatistcheff

    Li Time parallel battery diagram

    Yes, this is what I've always seen before. Seems less complex and if it accomplishes the same result then KISS.
  9. atatistcheff

    Li Time parallel battery diagram

    I just bought a Li Time 24V 100Ah battery to power my car detailing setup. I will probably buy a second one next year to increase the total Wh of the system. In the Li Time manual they have an interesting recommendation for connecting the two batteries in parallel (attached). I don't think...
  10. atatistcheff

    Interpret the warning sticker

    I like "inside vehicle" just not sure how you got that from the graphic. I keep staring at it waiting for something to click. Oh and I though it was "don't spray farmers" and "don't spray doberman dogs".
  11. atatistcheff

    Interpret the warning sticker

    I need some ideas on interpreting this warning sticker on a pressure washer. I get the top and bottom images but the middle image has me really stumped!
  12. atatistcheff

    24 volt inverter recommendations?

    I am also in the process of getting a 24V inverter. I tried the low ball LCYMW 3000W 24V inverter ($259.99) and of course you get what you pay for. Supposedly it has a 6000W surge but it still couldn't start my pressure washer which has a 4,800W surge on startup (runs at 1,800W). You may not...
  13. atatistcheff

    24V or 48V Server Rack?

    Returning to the 48V or 24V question that started this thread. I think I'm limited to a 24V system (which isn't a bad thing) based on the roof area on the pickup. I can comfortably get 3x100W panels on my shell which equates to about 66V open circuit. The Growatt 24V has a 30VDC MPPT minimum...
  14. atatistcheff

    24V or 48V Server Rack?

    What I find interesting is that my Firman "inverter generator" is rated at 3,200 running and 4,000 peak watts. It seems to have no problems with large loads and costs less than a high end inverter. So you get the inverter and the gas/propane engine to run it for less than the cost of a mid to...
  15. atatistcheff

    24V or 48V Server Rack?

    I run it from a generator or if the customer has an outlet I'll use that. However, I have found that if I use an extension cord (12ga) sometimes the washer has problems starting up. I would hope a decent 3kW inverter should be able to handle it.
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