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  1. X

    Need help Figuring this FIRE out!

    pack burns because no BMS, The OP insist to talk about carboard and what not.
  2. X

    Why not to use Daly BMS with MPPT controllers

    this looks more like a "why you should use a fuse"
  3. X

    Dud liitokala "A grade new" cells?

    the fact that you top balance them doesnt make them perfect. do a capacity test
  4. X

    SOFAR HYD - Can you diy battery?

    anyone thought of pairing a small compatible 16s Lifepo4 battery, and then parallelling that battery to a massive DIY one?
  5. X

    Dud liitokala "A grade new" cells?

    only bought a set of litokala. All shit, some arrived at like 2.0v, swollen, missmatched, used. Also had marker numbers on it like 1 3 3 4. as if they were part of some mismatched packs that were taken apart.
  6. X

    400a daly bms not turning on

    all my daly's so far i just touch P- on B- and it wakes up.
  7. X

    Should electric cars tow a trailer

    no. the balance between extra drag vs production you'd find you'd need to keep the car parked in the sun for a full month to compensate for 30-60min of driving.
  8. X

    16s6p 48v lifepo4 battery configuration

    i would also worry with the bottom cells being crushed under the weight
  9. X

    Correct way to build a 12v 560ah Lifep04 battery bank?

    single 4s2p battery with 1 bms.
  10. X

    Why not 2 BMS on 1 battery?

    problem with parallel BMS,s is that if one stops before the other, the other will take double the current after the 1st shuts down.
  11. X

    All-in-one inverter problems

    depending on which spec is, many hybrid inverters don't support working without battery. so you shouldnt plug AC to it without a battery first.
  12. X

    Off grid Hybrid inverter "AC in" live when unplugged

    There's no solar panels plugged to it. When there's only batteries and the inverter is on. The "ac in" has voltage between the ground and the +/-
  13. X

    My first diy solar water heater

    I'm in the UK. If its too sunny (quite rare anyway) I can just take off my black table cover off the hottub/insulation off it and reduce its effectiveness. I'm actually considering building filtration into my loop as that's the only circulation going around,
  14. X

    My first diy solar water heater

    Yes. Although there are also thermostats that have 2 sensors and allow you to do that in 1. However I don't want to stop the system if the water is too hot, as these boxes are all black and sealed, if the water stops flowing, the pipes would probably melt.
  15. X

    My first diy solar water heater

    Quick update. this system has actually been working "TOO WELL". water been consistently going over 40C (104F) during the day in the last sunny days. Might reverse the thermostat to actually STOP when incoming water temperature is bigger than X, instead of what is at the moment (Start when...
  16. X

    Off grid Hybrid inverter "AC in" live when unplugged

    My aliexpress hybrid inverter is working all good, no issues, very happy with it. I was grabbing the AC in plug to plug it in and charge the battery and surprisingly i got a light shock off the plug terminals. Grabbed my multimeter and it's registering 70v~ between positive and ground, or...
  17. X

    Issue with DC power supply? please help

    power supply is proving to be a P.O.S. :P wired them in series (8S) with the BMS, into the power supply set to 28.8V and its displaying 26.33v/0.52A, so its charging at like 14 watts :P
  18. X

    Issue with DC power supply? please help

    yeah main reason why I did put red pluses. don't want to get confused.
  19. X

    Issue with DC power supply? please help

    absolutely. even though its charging slowly at 3.33, i look at it every 5min. I wouldnt go to sleep and leave it hooked up. I even made little "+" and "-" out of eletrical red/black tape to put near the terminals so i dont do any stupid mistakes
  20. X

    Issue with DC power supply? please help

    well a eve 280ah at 3.32 (jumped 0.01V now) is technically already at 90%+ capacity, so that might be a factor too. Voltage at power supply and terminals on the battery is the exact same. I have a hybrid inverter capable of AC charging at up to 60A or 80A (not sure now), but was aiming at only...
  21. X

    Issue with DC power supply? please help

    so in short when i set the power supply to 3.6 and plug it to a 3.31 cell and the power supply display shows 3.33 1.5A, it is charging it right? (at roughly 5w~ in this case) I might wire the cells in 8S (24V) with the BMS and charge them series at ~28V first as I will get all the cells...
  22. X

    Issue with DC power supply? please help

    atm I'm using a 1 footlong 12Awg cable, its a cheap Chinese one, thats probably the issue (photo below) all the videos i see on top balancing (like here: ) the moment the supply is plugged to the battery, for example set to 3.6, the value stays on 3.6 on the display, on mine, the moment the...
  23. X

    Issue with DC power supply? please help

    tried higher gauge cables and have the same issue. my problem is not the 1.5A, these power supplied dont shoot a lot of amps at low voltage. what i think is not right is the voltage not moving when i try to adjust while connected/on. it just displays the battery voltage. even if i turn the...
  24. X

    Issue with DC power supply? please help

    hey guys, using a dc power supply (small 30v10A one) to top my lf280Ah and im a bit confused. I've used this power supply on little diy projects before, always worked fine. on its own the voltage is spot on, etc. now the issue i have. I got eve 280ah cells all hooked in parallel. set the dc...
  25. X

    My first diy solar water heater

    Had my first trial run today. Only 18C/65F outside. Hottub Water was at 28c/82f, ran it for 2 hours, water gone up to 30C/86F. Looking promising for my firs ttry, considering its a reasonable mild early spring day in the UK
  26. X

    LiFePO4 Voltage Chart?

    because of the lifepo4 being so linear, I'm actually setting up my voltimeters (that show capacity in a linear way) as 0% on 25.5V and 100% on 26.8V. even though that technically is 20 to 90%. because if i set it as 20v to 29.2v the battery would display "50-60%" across 90% of its capacity. I...
  27. X

    My first diy solar water heater

    I bought stuff new, so spent about 200 bucks total. from what i've seen online, considering the sun isnt that hot here in the uk, this thing should at least half my electricity usage in the summer. Considering the tub can use up to 60-70 a month in the summer, this should pay itself in...
  28. X

    Oops!! 24v to 12v converter fire

    isnt those 24v to 12v things just for like 30-100watts? you done 24v to 12v and then into an inverter ? :D
  29. X

    How many mah will I get at 5v from a 12v battery?

    yes, 24Ah before losses on conversion. its the reason why i always measure battery capacity in Wh, as its the same, regardless if you're down converting to 5v, or inverting to 240V
  30. X

    Buying 280ah cells from UK - 😣 help

    delivered price to uk?
  31. X

    Buying 280ah cells from UK - 😣 help

    amy said "Shipping by sea, arrival to the door , DDP, tax included, " so i guess i wont be stung by it then
  32. X

    Buying 280ah cells from UK - 😣 help

    Amy said that there would be no import tax (not sure if she means import duty with that) but considering I paid 500usd postage and tax, its probably correct. Will wait and see
  33. X

    Buying 280ah cells from UK - 😣 help

    Thank you Thank you for the info. Feeling less bad for paying 20% kore via Amy than other sellers are selling for
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