diy solar

diy solar

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  • Post in thread: 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
  • Post in thread: Why there such huge Price difference between EVE cells and CALB cells

    This is the fact I have been looking for.....If I can get 10yrs of storage am 100% happy
  • Post in thread: How bad is 40°C bad to my LiPO4 bank

    I am using LiPo4 as stated in my title
  • Post in thread: I want to put swollen cells in the freezer

    I have received two CALB swollen cells from China. Their voltages were at 3.22v while all others were at 3.26v I am just thinking, if I put them in a freezer overnight before charging them.Will it help ? Thanks, Innocent
  • Post in thread: 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...
  • Post in thread: My CALB cells have swollen

    It was a maintenance day and unfortunately we exchanged polarity of the terminals from the battery to the charger and it went PUFFF. This is a PV SCC BMS has always worked fine at 55.2V Regarding temperature.... I am living in Dar es Salaam just 6degrees South of Equator which is always...
  • Post in thread: My CALB cells have swollen

    I have tried to recharge the battery bank with some caution..... So far I have just pushed in 18KWH and still hungry for more, it is 20KWH storage. Next test is discharging it, to see how much will be recovered
  • Post in thread: My CALB cells have swollen

    That's 4 Ok...I will try to set a maximum charging current as suggested. I am just thinking how many days it will take to get to 3V for a 400Ah battery bank
  • Post in thread: SCC stuck at float charging stage

    Unfortunately I have only single charger at the moment. I am currently waiting for the supplier to deliver the replacement. I am also thinking of buying second charger and put it as a redundant parallel to the first charger. I don't plan to inspect the system regularly....and therefore I sm...
  • Post in thread: Weird Storage Capacity

    I am using the charge controller to monitor the battery levels The voltage controller maximum charge is set at 57.6V I am just using a Chinese charge controller with a claimed efficiency of 98%
  • Post in thread: Is this battery cycle life calculator correct?

    I have been roaming around in the internet researching about my life expectancy of my LiFePo4 battery bank. I have come across this calculator here which is estimating my battery life to be 24years. I am astonished by the numbers.... Can somebody validate it ...
  • Post in thread: New Clueless in Kyiv

    I have never seen 7000 cycles battery. Where will you get them ?
  • Post in thread: Charge Controller don't do bulk charging

    Hi, Recently I installed a 5kw sola panel capacity with a Chinese SNADI MPPT charge controller (100A). My battery bank is lithium 48V. The system worked fine for few days then over suddenly it stopped charging. I tried to disconnect and reconnect again, only to realize the solar charging...
  • Post in thread: Isn't there any smart solar charger controllers to share PV panels ?

    Hi I am just thinking.... Putting a huge panel 8kwh all of them setup in xP and yS series but I want to make sure all of the circuit is looped into two or three smart solar charge controllers which will be parallel to each other connected to a single huge battery bank. The idea is to ensure...
  • Post in thread: Approximate Battery Life

    For me to achieve 56.8volts as voltage at resting. What should be my highest charging voltage to be set at the charge controller ? I tried to do 56.8v as bulk same float voltage. The moment the sun goes down and scc stops charging. The resting voltage becomes 52.8volts
  • Post in thread: 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
  • Post in thread: How bad is 40°C bad to my LiPO4 bank

    Hi, I am running a 400Ah lithium bank in an outdoor cage in a typical tropical climate (Dar es Salaam). Being charged at a maximum of 62A during peak hours. Around same peak hours my ambient temperature is at 40°C as a maximum temperature and drops to 29°C at midnight. I am trying to imagine...
  • Post in thread: 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...
  • Post in thread: Charge Controller don't do bulk charging

    Thanks Steve, My Batteries are 12V configured in series. The SCC manual specifies the 48V battery bank. The panels are configured to bring 118V while the SCC operates at a maximum of 150V. Currently, as it can be seen in the pictures I attached the PV are bringing less than 130V. The system...
  • Post in thread: Large Solar system plus storage

  • Post in thread: Large Solar system plus storage

    I have just learnt that you don't need to restrict yourself to 80%. I have been using 10yrs old CALB cells and I am currently doing almost 60% DoD. Still going strong on my 24/7 system
  • Post in thread: Who is best supplier for lithium cells ?

    How much has Xuba quoted per cell ?
  • Post in thread: Weird Storage Capacity

    The question is how comes energy stored in the batteries remains the same despite usage previous night ?
  • Post in thread: How much will 5kw panels produce in a day ?

    Hi, I am located in Dar es Salaam. I have setup a 5kw panels with a small power storage of second hand 48V 200Ah lithium battery bank. I was wondering if I can improve my facility to enable me produce 30 kwh per day if I can invest in storage. I am currently producing around 14-15 Kwh per day.
  • Post in thread: 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
  • Post in thread: My CALB cells have swollen

    Terminals are pointing up
  • Post in thread: My CALB cells have swollen

    It is sad and very discouraging.... The Chinese supplier will definitely jump into their usual funny conclusions.....
  • Post in thread: Approximate Battery Life

    I just tested it yesterday. I changed bulk voltage to 59.6 same as float. It never went into float. I achieved 53v resting voltage and I got the highest generation ever 19.8kwh which I believe most of it just went into the battery bank as no body was at home. I ended getting more than 7 hours of...
  • Post in thread: My 200AH CALB bank wont settle beyond 53V

    Hi All, I find my self frustrated....I have my 5kw pannels with 100A charge controller. My charging voltage goes as far as 57.6v as a maximum l found it in lithium setup in the charge controller. However, the maximum I have ever seen as charging voltage is around 56.0v and it settles at 53v...
  • Post in thread: My CALB cells have swollen

    Yes...I have measured them. They are around 0.8-0.9V Is there a way I can recharge them back to 2V to bring them to life ?
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