diy solar

diy solar

Search results

  1. N

    Hurricane System Question/Problem w/MPP HV LV2424 AND Generator ~URGENT

    I guess the only immediate solution is to carefully balance my loads and vary charge current, and ride the SBU/SUB switch. Thanks (all)
  2. N

    Hurricane System Question/Problem w/MPP HV LV2424 AND Generator ~URGENT

    Not fine, as my loads often exceed my small generator output, but not my 2400w inverter output.
  3. N

    Hurricane System Question/Problem w/MPP HV LV2424 AND Generator ~URGENT

    it is cloudy, so i have ~no solar.. Ideally, I'd like to run my loads continuously off the LV2424 inverter (I have 15Kwh batteries), and just recharge batteries at a limited current from a small 800/1000 generator as needed/during day. But it seems there is no way to do this, As in SUB mode...
  4. N

    Received 'new' power station with zero% charge

    and when the batteries swell up and catch fire in a year, then what?? However, Amazon gave me a full refund and told me to keep the unit, so we'll see! will recharge (forever) in fireproof area, and monitor it's kwh Oupes has father's day sale on same model (600w) for $390, tempting.. It...
  5. N

    Best Bang for my Buck - Solar Generator

    You wont find an 'enclosed' unit that meets your needs for that price or at all, most have very low watt ratings. And you'd still have to hook up solar with potentially cumbersome adapters, here is rough equiv, $6000 (but only 600w solar, not enough capacity in panels nor controller): Will P...
  6. N

    Best Bang for my Buck - Solar Generator

    Correction, *MIDEA (often on sale for under $300) Here is mine running from almost 9pm to now (I turned temp from 71 to 72 at midnight, ~500 watts/hour avg, higher temp setting. is much le$$, this is in FL heat) Battery started at only 89% full at 9pm, now 55%, but this is 15kwh of batteries
  7. N

    Best Bang for my Buck - Solar Generator

    FIrst, check out Media U inverter window AC if you are in the market, depending on temperature, they could run a few hundred watts/hour. Refrig is about 2kwh/day, fan 1kw, lights 500w, AC could be 10kwh/day if 24 hours. So you'd need at least 5kwh batteries, and a bunch of panels, at least...
  8. N

    Received 'new' power station with zero% charge

    thanks, but these could have been dead for a year, while they seem to work, cycles could be reduced to a fraction, which I wouldn't find out about until after return period ends
  9. N

    Received 'new' power station with zero% charge

    I bought a non-branded version of Oupes 600w power station on Amazon for slightly reduced price ($350 vs $460), but when I received, battery SoC was at 0%, date of mfg was 5/2021. Every Oupes 'unboxing' video I've seen, the units have 80% charge, and most of us know to keep lithium healthy to...
  10. N

    EG4 Lifepower4 - Why is SoC unbalanced?

    I was hoping the BMS was smart enough to use comm between 2 units to balance by varying charge/discharge on each, doesn't look like it, unless something isn't working correctly. This is 24v MPP LV2424 btw, EG4s in parallel.
  11. N

    EG4 Lifepower4 - Why is SoC unbalanced?

    Over 7% difference in SoC, isn't the RS485 comms supposed to balance them? Also, wondering how SoC is derived? (unrelated, AH seems to be reported incorrectly by SA) 2x 24v 200AH EG4 LifePower4
  12. N

    MPP PIP–1012LV-MS Solar amps / MPPT limit seems lower than spec

    Measure your battery voltage/SoC while you are applying max charging power, make sure they still read 12.7. As SCC will taper down power when it senses battery is near full (and receiving high PV power). SCC will usually read higher than idle voltage when charging. Perhaps try running a high...
  13. N

    24v guys get them while you can.

    any coupon codes?
  14. N

    Automatic Solar Powered Car Charger Overflow Dump

    credits to tdorssers: https://github.com/tdorssers/TeslaPy/blob/master/cli.py
  15. N

    Automatic Solar Powered Car Charger Overflow Dump

    Just to update, using Tesla new charging_amps setting in API, I can track solar power very tightly, and assure house batteries are up to desired voltage at all times (blue is load (Tesla), yellow is solar power): cli.py -e *car-email* -w -a CHARGING_AMPS -k charging_amps=$1
  16. N

    New MPP Hybrid LV2424 MPPT/charging shuts down when battery full, forever*

    Thanks for all the inputs, I'll adjust down the float and bulk, but the battery seems stable and accurate, it is producing output usable to the inverter even when the MPPT power is cut off (see blue line in graph), it is just the MPP that stops feeding solar charge current to battery, until...
  17. N

    New MPP Hybrid LV2424 MPPT/charging shuts down when battery full, forever*

    any links to prior reports? I looked, didn't see. MPP tech support wants me to use their PC software to record stats, which isn't possible for me.
  18. N

    New MPP Hybrid LV2424 MPPT/charging shuts down when battery full, forever*

    *until battery power removed/reapplied. Works great until battery full, making unattended usage useless. Plenty of PV volts, just not being processed by MPP Any ideas or work arounds? Bulk and Float were set at 29.2, will try float to 29.1.. Battery is BigBattery OWL LIFEPO4 x2 in series.
  19. N

    Automatic Solar Powered Car Charger Overflow Dump

    Make sure smart plug can handle the charge current. Many are 15 amp, some are 20, some are 10. Verify with your electrician.
  20. N

    Automatic Solar Powered Car Charger Overflow Dump

    I'm only using smart plug for on/off, and Tesla app for current selection, which seems to allow varying between about 500-1400 watts (just under the amperage specified in their app (5a-12a), if my metrics are correct).
  21. N

    Automatic Solar Powered Car Charger Overflow Dump

    The load power graph in my post #1 is shared w/other appliances in my house, hence the variability, Graph in my post #5 is dedicated to just the Tesla, and fixed at 5 or 6 amps, I"ll likely turn it higher in the future, and may research their new current-control API, which would help for larger...
  22. N

    Automatic Solar Powered Car Charger Overflow Dump

    Tesla mobile charger can do 5a-12a @ 120v I was stress testing my bigbattery today w/Tesla as sink:
  23. N

    Automatic Solar Powered Car Charger Overflow Dump

    I put together a very small MPP HV/LV2424 2400 Watt inverter, on 1300 watts of panels, which powers most 120v devices in house all day/night (fans/refrig/lights/computers) and often found my 4.3kwh lithiums filling up with my average 500 watt home load on sunny days. This simple script turns...
  24. N

    Solar for Coffee Pots and mini fridge

    Jimmy, u might be in the wrong forum :)
  25. N

    Solar for Coffee Pots and mini fridge

    I actually measured my coffee pot this morning, Hamilton Beach (in slow/bold mode), took 12.3 minutes at 857w, which was 0.187kwh, to BREW, the heater element then was on about a 10% duty cycle, on 10% of the time at 857w, so for the first hour (total brew/warm), was about 0.3kwh. My refrig is...
  26. N

    SHTF Rig

    $588 MPP HV2424 All-In-One $1881 4.4kwh 2x12v bigbattery LiFePO4 (24v would be $300 less, but i have old 12v inverters..) $650 13 used Solarworld 285w panels (3yr old 257w PTC), may config 3s3p+2s2p w/old epever mppt =$3119+some wire and mount parts Ordered a dual-inverter AC unit to keep...
Back
Top