diy solar

diy solar

Recent content by 8milimeter

  1. 8milimeter

    Budget 7KW battery system

    The panel set up is for grid outages and will be positioned in my back yard. I have a 20a 110v charger to maintain the batteries.
  2. 8milimeter

    Budget 7KW battery system

    I have a grid tied (Enphase) system on my home and decided I wanted to add batteries to run my fridge and small appliances for emergencies. My solar contractor wanted 8-10 grand for budget Enphase battery system. This was way to much for what wanted so this was my compromise. 800 watts of solar...
  3. 8milimeter

    balancing new 12.8v 280ah

    More questions, my Weize 12v 20amp battery charger specifies not to leave unattended. Is this really necessary. Its supposed to be a smart charger. What is the consensus on this. I had planned on using a wall timer to turn off AC to the charger after a specified time. Is leaving it attached...
  4. 8milimeter

    balancing new 12.8v 280ah

    I just received a pair of Chins 12.8v 280 ah batteries. The both read 13.19v. Should I charge them individually to 100% or just install them (parallel) as they are.
  5. 8milimeter

    Charge controller VOC limit confusion.

    I just purchased a Bourgerv 60amp controller. The specs on the voltage are 100V (95V protection, 90V recovery). Can someone explain to me what this actually means. Thanks, 8mm
  6. 8milimeter

    Ideas/tips for safe disposal of leaked Lifepo4 batteries

    Curious as to why the failed ?
  7. 8milimeter

    12v 100ah charging question

    I'm looking at buying 4 chins 12v 100ah batteries. The maximum charge current is 50 amps. Is this per battery and does the allowable charge current go up as you add batteries in parallel ?
  8. 8milimeter

    battery short term storage question 3-6 months

    My system will be unattended for usually 3 but up to 6 months. My plan is to use a 365 day timer to charge every 90 days for a specified time period. ? How long should I charge (four) 12v 100ah in parallel with a 10-15 amp charger. ? which if any 110V 10-15 amp charger will let me adjust the...
  9. 8milimeter

    12v 100ah x 4 maximum charge current and MPPT ?

    I plan on using 4 - 100ah 12v lifepo4 batteries in parallel for my backup power. What would be the maximum / appropriate size 110v battery charger current ? I would like to have 800 watts of solar, would 80amp MPPT controller charge current be to high ? Thanks, Richard
  10. 8milimeter

    Question about Enphase IQ8A output.

    I just had an Enphase Grid Tied system installed on my Florida home. I have 11 - 405 watt REC panels with IQ8A micro inverters on one branch. I am confused about the output current and total energy in the system. The combiner box and main panel only have one 20amp breaker. I questioned the...
  11. 8milimeter

    LiFePO4 heating pad for cold temperatures

    After going thru the setup for the LM YN DC 12V Digital Thermostat I decided to post them to help. To me the instruction and actual function of the unit do not agree. My heat pads come on at 34 degrees "F" and go off at 38 degrees "F". TEMP SET at 38.0 PO=H P1=4 NOTE: The sensor is taped on top...
  12. 8milimeter

    LiFePO4 heating pad for cold temperatures

    Update: I have been using the LM YN DC 12V Digital Thermostat on my Battleborn heat pads for a year now. This morning it was 29 degrees "F", so I went out to check the Battery temperature. OMG !! the batteries were at 70 degrees "F". WTF !!! It took me a couple of minutes to realize the...
  13. 8milimeter

    Extending LiFePo4 battery life by using different charging profile.

    I would prefer longevity over peak performance in my LiFePo4 batteries. Would using lets say an AGM1 profile (14.1-13.4) extend the life of my batteris in the long run. ??
  14. 8milimeter

    400 watt 300 AH Van Build

    Good Question. Solar, about $5200 total. This includes wiring and misc hardware. 4 x 100 panels, 3 x 100 Battleborn, Renogy Dcc30S MPPT Alternator charging, Victron IP67 17A 110v charger. Van build, $12,500, this includes the Solar costs. A lot of the materials (wood wire hardware) were recycled...
  15. 8milimeter

    LiFePO4 heating pad for cold temperatures

    The new settings are working out great, 34-38 on the thermostat produces 34 to 41 actual on the batteries. The thermostat shuts off at 38, but the temp rises some after it trips. I adjusted the P2 setting to -1 so the thermostat reading would match the temp on my Victron monitor. I really like...
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