diy solar

diy solar

Recent content by Ed Tech Sensei

  1. Ed Tech Sensei

    SB175 Connector and 8 Gauge Wire

    The connector didn't fit well into the hammer crimper. Energy from the impact of the hammer wasn't enough to crimp the connector. The 4AWG connector is quite thick.
  2. Ed Tech Sensei

    Is there a way to track and quantify solar output (off-grid)?

    You could connect a Kill-a-Watt to the extension cord from the inverter leading to your load. It will provide you with the run-time and load output. Kill-a-Watt is about 30 bucks on Amazon or at Harbor Freight.
  3. Ed Tech Sensei

    BigBatteries with Bus Bar

    They are studs not bolts. Sorry for the bad description. So the better setup is batteries on #1 and #3 with SCC and inverter on #2? I'll be running a 200 amp ANL inline fuse from the bus bar to the inverter. My inverter is rated at 40 amps so I'll be running a 40 amp ANL inline fuse to the...
  4. Ed Tech Sensei

    BigBatteries with Bus Bar

    I have two 12v, 120ah from BatteryEvo (300 amp internal fuse) using the SB175 parallel 6awg cable going into a 1200/2400w Giandel PSW inverter. I was told the 6awg is too small for the inverter. The ABYC app indicates I need 2/0 cable so I bought 5 feet of black and red and two SB175 connectors...
  5. Ed Tech Sensei

    Want to build system to run fridge

    Same here. Label said 115v at 3 amps. 345 watts but I had no idea what that meant. I plugged the fridge into a Kill-a-Watt for seven days with the electronic control panel on. Ice-maker and cold-water on. The average was 55w per hour. I still didn't know the start-up load. I plugged the fridge...
  6. Ed Tech Sensei

    New Wheelchair Batteries

    Yeah, the AGM's are dead. I was thinking about trying to bring them back just to have extra deep cycle batteries but I don't think it's worth the hassle. The Ironworks batteries are about 10 years-old so I don't expect much from them capacity-wise. I haven't capacity tested them. They were...
  7. Ed Tech Sensei

    New Wheelchair Batteries

    I have an out-of-production Quickie P100 Powerchair from Sunrise Medical. It has a 24V power system but came with two battery boxes with 12V Deka 8AU1 AGM 32ah batteries. Each box has ring connectors, a 30amp fuse, and SB175 connectors for plugging into the power control module. I replaced the...
  8. Ed Tech Sensei

    Where to source connectors and parts

    I have an older Quickie P100 power chair. It has a 24V system. The AGM sealed lead acid batteries that came with the chair are 12V Deka 8AU1 32 amp hour. They recently stopped taking a charge and I happened to have two 12V Ironworks LiFePO4 44.7 amp hour batteries. The battery boxes have a tray...
  9. Ed Tech Sensei

    WheelchairDriver

    It is interesting but not surprising they advocate for no BMS. The Ironworks batteries have a BMS but so far haven't affected anything as far as I can tell. I do have four 50ah 3.7 LiFePO4 cells I bought a while ago to build a battery but I haven't gotten the cheap Ebay BMS to work. I would...
  10. Ed Tech Sensei

    WheelchairDriver

    I'm only using the LiFePO4's because I had them already and I wanted to see whether or not they would even work with my wheelchair. I don't use the chair much, and the original AGM's for the chair are rather small and inexpensive. I think I'll buy a pair of AGM's for the chair and figure out...
  11. Ed Tech Sensei

    Inverter and Charge Controller Shutdown Issue

    I bought the ABYC DC wire size chart. I mistakenly used 8ga wire because I didn't understand what "load" meant on the Renogy scc. Thanks to Bud Martin for setting me straight. The wire chart indicates I need 2/0. My batteries have an SB175 Anderson connector. The 3' parallel cable is 6ga. I will...
  12. Ed Tech Sensei

    WheelchairDriver

    Thanks for the links. I spend my day in a manual wheelchair but have an old electric. The AGM 8AU1 32 amp hour batteries for my chair finally died. I happened to have two Ironworks LiFePO4 12V 44.6 amp hour batteries in my garage. The Ironworks fit in the battery box so I hooked them up. I...
  13. Ed Tech Sensei

    Inverter and Charge Controller Shutdown Issue

    Tested the inverter again with a heat gun. On the low setting it was pulling 200W for about 30 seconds. I bumped it up to the high setting and the 50 amp fuse blew immediately.
  14. Ed Tech Sensei

    Nuthin but the Fridge?

    I've also been thinking about providing power to my refrigerator in the event of a power outage. The specs on the fridge state 115 volts at 3 amps or 345 watts. I connected the fridge to a Kill-a-Watt meter. The fridge used 5.4 kilowatt hours after 98 hours of runtime which came out to an...
  15. Ed Tech Sensei

    Renogy 2000 inverter/charger

    I have an AIMS 1500 MSW inverter/charger with an automatic relay. There is a separate switch for the inverter and a separate switch for the charger. With both switches off, shore power passes through to whatever is plugged into the AC outlets. If shore power goes out and the inverter is off...
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