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  • Hello everyone!

    I work as a chemical plant operator for 35 years now. I am fairly new to solar, but am doing a lot of research. Still learning. I used to build computers starting back in about 1990, but haven't done much of that for a few years. Solar is addictive and my wife rolls her eyes every time I mention...
  • PWM fuse size help

    All my controllers are MPPT and I'm familiar with them. My son ordered a 400 watt solar kit with a pwm controller and I have never used one. I assume the panels will be all parallel in hook up. I'm not sure if he is getting a 30 amp or 60 amp controller yet. All I have laying around is 40 amp...
  • switching to lithium from agm question

    I have 4 100ah agm batteries in parallel hooked to a 12 volt 3000 watt pure sine inverter. I was looking into getting a couple of more ecoflow or bluetti power stations witch would give me 4000 watt hours more. Then I got to thinking that 4 200ah lithium would give me 10000 watt hours at about...
  • First real system test.

    A Winter storm took out our electric on Friday the 4th just as I was getting up to work a 16 hour day. I broke out the Ecoflow delta and made coffee,toast, and plugged in the fridge. I left for work and my wife lit the kerosene heater and plugged up the inverter for the well pump. I didn't have...
  • Simple shed system question

    My son is getting a shed delivered later this month and wanted to solar power it as it's far from the house. He's only planning right now to power a ceiling light,small fan, and a battery tender. He wants to hard wire an outlet or two and a switch for the light. He wants to run a ground rod for...
  • Space heater

    Was just wondering about running a little space heater on my system. On medium it is 750 watts. I have 4 100Ah AGM batteries wired in parallel and a 3000 watt inverter with 600 watts of panels.(40 amp mppt controller too) Am I thinking right that I'm going to need to up that to 1200 watts of...
  • battery bank question

    I have two 200ah hooked up for my well pump inverter and four 100 ah batteries for my house inverter. Both are backup and not grid tied. They all have the same cycling and float voltages. Could I safely jumper one to the other to help out the other bank? Maybe when they are charged and in the...
  • backup battery bank mppt setting question

    I have two battery banks of 400ah each and only use them in power outages. One bank runs my well pump with a 4000 watt inverter and the other bank runs essentials with a 3000 watt inverter. I have 1400 watts of panels that I kept portable for now. The only draw on the batteries is the charge...
  • Two mppt charge controllers

    I hooked up a second mppt charge controller to one of my battery banks. Does it matter if I use the same terminals or not? It's just for extra amps if needed and not used all the time. Right now I have it one set of terminals down. 4x100Ah battery bank. I have the inverter and charge controller...
  • mppt charging question

    Is an mppt charger a "smart" charger? If it doesn't need a 2 hour boost mode will it automatically switch to float or does it just back down the amperage until the 2 hour set point has passed? I just notice that all things being equal that one of my battery banks will be in float mode before the...
  • Can lithium take a hard surge?

    I currently have 3 200ah AGM deep cycle batteries for my emergency well backup system at 12 volts wired with 4/0 awg cables and it works good.. I was thinking about replacing the batteries with Lithium for longevity sake, but didn't know ifthe Lithium could take a surge like the AGM. I'm running...
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