diy solar

diy solar

Recent content by rplarry

  1. R

    Sofar ME3000sp running offgrid

    we need more info about your inverter. To charge batteries through your inverter the inverter must be an inverter/charger. If it is not then you will need a separate charger. I'm guessing you already have solar panels to charge your batteries, is that correct?
  2. R

    280 and larger 320ah cells all seem sto have the same physical dimensions, why?

    Thanks guys, that pretty much confirms my suspicions. Another newb falls for the hype. Live and learn.
  3. R

    MPPT Controler question

    Good, 4s is so much easier and cheaper to wire.
  4. R

    MPPT Controler question

    I agree with rmaddy since there is a question with the voltage of the panels then wire your panels in 2 parallel and then series those with the other 2 panels in parallel (2s2p) The voltage is too close to take a chance of burning up a controller
  5. R

    MPPT Controler question

    Rinot you are correct, you want to keep your battery bank at 24v so you can power your inverter. From what I see you could put your 4 panels in series and run the 87v into you charge controller. Your charge controller will reduce the voltage and charge the 24v battery bank. I hope I understood...
  6. R

    280 and larger 320ah cells all seem sto have the same physical dimensions, why?

    I need to replace 2 low cells in my 48v 310ah diy bank, and in looking for replacements I notice that most all 280ah cells and larger are all the same physical dimensions. 72mm x 173mm x 208 mm. So my question is are they all basically 280 ah cells and some test better than others so they sell...
  7. R

    Panels to the rain roof advice

    I took some 2x2" alum angle and cut it into 4" lengths and screwed it to the sides of the solar panels. Then screwed down through the angle and into the roof to secure the panel to the roof.
  8. R

    Panels to the rain roof advice

    I helped a friend mount his panels to a metal roof and we used aluminum angle of the side of the panels and down onto the metal and spaced them so we screwed into the wood supports under the metal roof. Not very expensive for the angle and easy to cut into short lengths.
  9. R

    Anyone around SoCal ordering 310ah batteries from Amy Zheng at Docan anytime soon?

    I have contacted her or one of her coworkers and the batteries I want have a 4 cell minimum. I only need 2. I did find 2 cells on E bay and bought them but after I did a capacity test it turned out they were not as advertised. I had to return them.
  10. R

    Anyone around SoCal ordering 310ah batteries from Amy Zheng at Docan anytime soon?

    If so I would like to add to your order. I need 2- 310ah cells. If you are going to order I would of course pay you in advance and either pick up or pay you to ship the batteries to me. Anyone?
  11. R

    SOLD 2-310/280ah Liitokala lifepo4 cells for sale $140 each

    I bought 16 310ah cells and made them into a 48v bank but during use I noticed that I wasn't getting the amp hours I was expecting so I did a capacity test on the bank and instead of the 310 ah I should get I was only getting 280ah. Looking at the bms I saw that cells #6 and 10 were low. I...
  12. R

    Replace car battery with LiFePO4?

    Funny you should ask, I just built a starting battery for my 2020 Polaris rzr. I used 4 25ah lifepo4 cells and a 200 amp BMS, put it all into a box approximately the size of the stock battery in the rzr. Before I did the swap I checked the voltage of the system and with the lead acid battery the...
  13. R

    Best current turnkey 48V LiFePO batteries?

    I think I PM'd you but if you don't see it I'll try again.
  14. R

    Best current turnkey 48V LiFePO batteries?

    I bought 3 of the GYLL 100ah 48v batteries from signature solar in March of this year and have been using them for 6 months now with absolutely no problems except that I am a computer idiot and I cannot get my computer to "see" the bms in these batteries. I am in the process of building my first...
  15. R

    Has anyone tested the Gyll / EG4 LifePo4 batteries

    I have 3 of the Gyll 48v 100ah batteries and have been using them since March this year. No problems with them except that the BMS is only available through a usb connector and a computer. I have not figured that part out yet. Other than that they work just fine. No complaints.
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