diy solar

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  • Post in thread: Does Server Rack Battery Orientation Affect Built-In DC Breaker Arc Quenching Ability?

    I live in a hot climate and when I had smaller AGm batteries I put in a chest chest freezer cracked open on a controller set to 77deg worked well. Thinking about doing the same with server rack batteries. Wonder if they were in a special rack mounted good if they could be stood up in their...
  • Post in thread: Best solar panel angle for east/west to maximize Sunrise to Sunset

    Looking for some advice on best angle for putting some extra solar panles on my off grid home. I already have a surplus amount of panles. I have 60 panles of 315w each so by 9am my batteries are full. and thats only using 40 panles. I want to take about 12 panles, 6 facing east and 6 facing...
  • Post in thread: Recommendation for a BMS for large 2V 1800 AH AGM battery.

    Yes looks interesting. I can put any 12 or 24 charger and perhaps they balance the voltage. So hard to check 12 or 24 cells at once to spot just how bad a cell is. also hard to laod test a singe 2v cell. I plan to put 6000 watt inverter and try pull 6000 watts at once and monitor all the cells...
  • Post in thread: Best solar panel angle for east/west to maximize Sunrise to Sunset

    Do you have same controller for both east and west? Someone told me to not tie together east and west one side can pull the other down. Anyone know if thats true?
  • Post in thread: Recommendation for a BMS for large 2V 1800 AH AGM battery.

    Can anyone tell me if a Daly Smart BMS voltage can be lowered from 2.25 to 2.35V ? Or can charging be turned off and just used to monitor each cell? If I get a 24S that says 72v will it even turn on if I only put 48V to it ? Or should I get a 13S that uses 48V and turn the charge output down...
  • Post in thread: Best solar panel angle for east/west to maximize Sunrise to Sunset

    Wonder the actual number difference from 90 to 45deg? its its only 10% then 45deg is ok. Im thinking long term and trying to use as little as battery as possible at .20 cents a watt of solar its no big deal. IF its worth it I might put even more panles just for e/w. The longer I can crank the AC...
  • Post in thread: Best solar panel angle for east/west to maximize Sunrise to Sunset

    Im actually near puerticitos . Come on by anytime check out the system I am building. Im here full time and want to AC all the house all day. You know how hot and humid it is here. Summers suck but with all the house and garage at 70deg all day summers are maybe my favorite now. I will send you a PM
  • Post in thread: 2 Pole vs 3 pole DC breaker what's the difference?

    Sorry for dumb question but in DC breakers what is the difference of 1,2 or 3 pole? In AC i know there are different voltage and phases but in DC thats no the case. example MNEPV30-600-2PP vs MNEPVRT30-600-3PP I know one has remote trip. I will have 3 strings of panles that are 600vdc at...
  • Post in thread: Preparing for the heat...

    It gets to 68 inside the area. But after I shut it all off there is still some stored heat. If I can get it to 60 deg I think will keep things cooler over night. Works decent now but bigger AC I think work help even more. Can get things cooler faster.
  • Post in thread: Recommendations for stackable inverters with WIFI

    Yes Schneider is really nice but with options like growwatt and midnite solar I can have spares. For the Ac I will have all inverter ac. They dont have that big compresor hit. They turn on and slowly ramp up the power. If you keep them on low they will run less power vs 100% on and off like...
  • Post in thread: Best solar panel angle for east/west to maximize Sunrise to Sunset

    I think I will set up 6 on the house at 45deg maybe even 6 more at almost 90 and see the difference as amps in to the clock and time of day. if its huge difference I will look into it more. There must be a chart somewhere as the sun faces the panel perpendicular then as it moves.
  • Post in thread: Best solar panel angle for east/west to maximize Sunrise to Sunset

    Used the PVWATTS and did by hour. I pulled only for one day 7-1-22. Yellow is easy in both 45 and 90 deg and green is west the same. I put in one KW for size. I guess thats 1000 wats of solar panles? East is for the sunrise and west for sunset. Not sure if I agree. Just tilting one panel seemed...
  • Post in thread: too good to be true 50A unit 3-15V for 120$ CAD

    Steve What is the max amp you think the TP1540e will hold at 2.32 volts? And how long can it do that continuous?
  • Post in thread: Recommendations for stackable inverters with WIFI

    Growatt 5000 with high voltage input looks nice and can stack them too. 695 each is very cheap. 3 of those and keep one spare on hand I would be set. Strange you scan all the pages and the word "warranty" does not come up. Wonder how good service is? Shipping a unit back to china could get...
  • Post in thread: Recommendations for stackable inverters with WIFI

    They are for sure better quality but almost $4,000 vs $695 for growatt.
  • Post in thread: Best solar panel angle for east/west to maximize Sunrise to Sunset

    Looking at one of my controllers data on panles I have totally flat. Noon 2000 watts and 4pm is 1000 watts 5:20pm is 500 watts. Would splitting noon to sunset give you 45deg angle? Sun also feels a little weaker at sunrise and sun set? Not sure if thats just the temperature doing that. If I...
  • Post in thread: EG4 6000XP with SOK 48V 100Ah PRO VS EG4 LL

    Looking to put in a new system. Going with 6000XP. I like that SOK ability to service them. My place is way off grid in Baja Mex and could be really tough to ship back a complete battery. If the EG4 LL was serviceable I would stick with them. Has anyone had any issues with compatibility of the...
  • Post in thread: East and west pole mount calculations

    How did you set up your east west panels? One controller or two? Im looking at doing the same thing. Mostly for AC to run longer in the day.
  • Post in thread: Recommendations to monitor individual batteries on my 90 kWh AGM Battery Bank

    Can anyone recommend a good battery monitor system that can track the voltage from each individual battery? I have a 48V system that has 24 batteries at 2v each. Model is EnerSys PowerSafe DDm100-33 UPS Each of my batteries is about 290lbs. That about 7,000 pounds of battery bank. I would love...
  • Post in thread: Recommendation for a BMS for large 2V 1800 AH AGM battery.

    Have a unique situation. My main goal is track and log battery voltage on my PC. My batteries are UPS 2V and weigh 300lbs each. I have a main bank of 24 cells I run the house with. I have a spare set of 12 Batteries. This spare set I would like to charge full then us a BMS like a Daly LiFePo4...
  • Post in thread: EG4 6000XP with SOK 48V 100Ah PRO VS EG4 LL

    I will say nice to see support here this fast. That adds points in favor EG4.
  • Post in thread: Recommendations to monitor individual batteries on my 90 kWh AGM Battery Bank

    What BMS do you recommend?
  • Post in thread: East and west pole mount calculations

    I have all three 150,200and 250 you can get more amps and watts out of the 150. But only important if yor maxing out. Midnite has a new one that will be out end of the year/ It will be up to 600v and can do two seperate strings of 100amp. also has built in breakers for solar and battery. More...
  • Post in thread: Preparing for the heat...

    I would love 80deg but they spike up to 95-97 in the evenings when the ac is shut off. Problem too is the small enclosure holds in the heat. I have a small vent but does not really do it. I might put a good extractor fan to turn on automatic or put on a wifi control switch to pull air from...
  • Post in thread: Recommendation for a BMS for large 2V 1800 AH AGM battery.

    haha sorry typo not 3.5v If cells are close to full and you set parameter of a voltage of 2.32 why would a BMS not work? If I set each cell to 2.32 with a Daly BMS what happens ? Not trying to charge from dead to full every day.
  • Post in thread: Preparing for the heat...

    I do that now in the LG app works great. All the AC in my house are on timers. Freezer and Fridge too. Tuya makes some nice 15amp wifi switches. Day time I have 26,000 watts to use so I freeze the house haha. Deep freezers on high. Then when sun goes down full conserve mode.
  • Post in thread: Wiring for East / West Solar array

    We rarely get below 60 Deg here. I have 5 Midnite solar classis now and been here many seasons. So your east string in its self is in series correct? Then both strings are parallel? What this Diode?Im not worried about a flat curve through the day. I have a 100 panles flat on my garage so im...
  • Post in thread: Recommendation for a BMS for large 2V 1800 AH AGM battery.

    Top goal is just monitor so I can load test 6 batteries at a time with 12v inverter . So I can move the best batteries to the main 48v system. I have total 36 batteries 24 are using every day. The extra 12 trying to get nice and balance then put in the main bank. What I have been doing is hook...
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