diy solar

diy solar

Recent content by Usangira

  1. U

    Parallel Charge Controllers Limiting Each Other

    I have tried to overload the inverter .....I can now see the variance between two arrays is ≈5A .....So may be my problem is storage......which means more dollars.... ......sick n tired of lithium battery prices
  2. U

    Parallel Charge Controllers Limiting Each Other

    Dear Members, I am kinda frustrated with my two Chinese solar charge controllers which I have connected to charge same single battery bank of 400Ah Array 1 is 5kwp and Array 2 is 5.6kwp both are on the same roof similar direction and tilt. The problem is...When Array 1 charges at 40A Array 2...
  3. U

    Parallel SCC charging very differently

    I have two strings of solar array 5kwP each. Each string is hooked to two different solar charge controllers which are charging one same battery bank. Both chargers are doing fine. I have made sure these chargers have same charging settings (both float and bulk at 57.2v) My expectation is...
  4. U

    Weird Marks on My Panels

    what is OP?
  5. U

    Weird Marks on My Panels

    Let me find sometime this weekend to check..... Unfortunately I won't be at home until Saturday afternoon Thanks for a hint to check for
  6. U

    Weird Marks on My Panels

    What is the reason for that?.... They are only 22months old
  7. U

    Weird Marks on My Panels

    Hi everyone, My panels serve as a car shade. As I have just seen these wierd pink marks from below the panels. I would like to know if it is something to do with damage or water leakage. These panels are covered with a tempered glass at the top. It is mid day and it is really hot. Thanks...
  8. U

    A story about importing LiFePO4 cells

    Setting a business for audit in China is the only opportunity I am seeing it here
  9. U

    Best LifePo4 charge controller settings known to man for Maximum Service life and Minimum battery stress!!! 5,000-10,000+ cycles?

    I tend to believe....if my battery bank is 400AH and my peak charging is hardly 40A. Stress to the battery should be almost zero and I should always recharge it to 100% whever possible
  10. U

    What Impacts efficiency of solar charge controllers

    I have seen a model doing 4kw and 3.5k at peak, and similarly I have one which is always stuck at 2.8kw(max) from the same 5kw PV circuit I tend to believe air cooled are usually more effective than fan cooled Thanks
  11. U

    What Impacts efficiency of solar charge controllers

    I have used several solar charge controllers in a same single PV circuit. They have been generating various levels of power. As the generation levels have been varying, I am inclined to believe there are several factors which lead to some cases I can't reap maximum benefit out of my PV investment
  12. U

    Lost Charging Opportunity

    Ooh...I hear you, but I think that could work well with polar locations. I am very close to equator. Only 6 degrees South. So, now is the coldest time of the year, and am seeing the maximum 115v. My experience, tells me my voltage never goes beyond 118v throughout the year.
  13. U

    Lost Charging Opportunity

    Hi, I always keep thinking of solar charge control which has a maximum PV voltage of 150V I have my panels in 2S5P. My 2S is giving me maximum of 115V.....I have 35V unused which I could have made my panels start generating at may be 5:30am or 6am Am I dreaming ? Any ideas are welcomed as I...
  14. U

    LiFePO4 charge, float, and absorb voltages for different brands of batteries

    Moreover..... As float voltage = bulk voltage.... This saves alot of battery cycles as once the battery bank is full.... Even if it is 9am, the remainder of the day will be consuming PV power directly instead of charge/discharge cycles to get to a float voltage. I guess to my case this saves...
  15. U

    144 kWh per day off grid system

    Great stuff.... congratulations. If there's no other limitations. I believe you can do it. Just make sure everything is genuine. Due to financial constraints I chose Chinese stuff. Never go for Chinese solar chargers....I learnt it in a hard way. Batteries and panels can be relied
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