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  1. S

    Very minor difference in busbar size between lifepo4 cells

    **** YES MAN! (ecstatic as it will save time and not have to redo so many!)
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    Very minor difference in busbar size between lifepo4 cells

    I had to create 3x busbars with a different thickness to the ones that came with my EVE lifepo4 cells. The main reason was to successfully connect one pair of the parallel cells in series successfully as illustrated in the photos. The new busbars are 1/8" thick, unsure of the size of the...
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    DIY 12V Lithium Connection double check

    Hey all, I'm connecting 8 lithium 3.2V 272aH cells in the below configuration. I am just double checking that this arrangement is accurate. Im just about to cut my own busbars so wanted to make sure this is accurate before connecting them together.
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    Daly internal settings

    Bump
  5. S

    Daly internal settings

    hi we are looking for settings for the daly BMS app. your answer does not apply to the questions the first sentence: "I have a Daly bms, but the manuals don’t explain the settings and exactly what they do / affect" if anyone can assist it will be a great aid. I am surprised that despite the...
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    Sizing fuse for MPPT Charge controller

    What switch did u get
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    Problem with the DC power supply for top balancing

    I can confirm that if you are using the cables from the psu, I had the exact same problem. Creating my own connectors solved the problem marvelously
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    BMS Sizing, BMS Amps

    I couldnt possibly answer this question as I still did not feel confident in the answers provided in this thread. Off the top off my head, amps of BMS indicates max draw at any one time, but it had to be even less than that according to one of the posters. Im confused >< I wish there was one big...
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    Charging with benchtop in series

    Thanks Zwy. 1. Yes 2. No, but I may do this. What is the method for cleaning the busbars? 3. No. 4. I haven't run the pack to pull it down to 2.5V 5. I am attempting to charge at 3.6V as that's what I've seen recommened. This is the first time I have had people suggest the cells only need to...
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    Charging with benchtop in series

    Not sure how you came to the conclusion that my cell is at 3.650V? They are all roughly 3.4V with the multimeter, as reflected accurately in the BMS app. DMM reads 3.4V when I last checked and was charging. I think I outlined all of this information in the opening post but maybe I'm wrong. OK...
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    Charging with benchtop in series

    Not sure what your comment is attempting to point out? The opening post clearly points out what I am trying to do which is charge the battery in series using my PSU. If you cant help someone in need, dont bother commenting.
  12. S

    Charging with benchtop in series

    As already stated, the bms is turning off charging. The chg mos light turns on and off The reason Im doubtful that its the connections is that the clamp meter matches the amps of the PSU further, the connections charge fine up to a certain point and then the chg mos does this turning on and off...
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    Charging with benchtop in series

    I dont think thats the cause as it charged fine up till a certain point. The bms is turning the chg mos on and off
  14. S

    Charging with benchtop in series

    The chg MOS button in the app goes from green to grey each time it changes too so the BMS is doing something. Could someone please decipher the settings I posted earlier to work out what I have incorrectly calibrated?
  15. S

    Charging with benchtop in series

    I fixed this i already fixed this as per the other posts after I realised it myself. the problem is still persisting after changing the psu to 5 amps instead. It jumps between 13.7V and 4.95 amps TO 14.49 and 0 ampsUnsure what to do. Any other suggestions? Photos attached for values, changes...
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    Are tinned copper PV cables okay or pure copper?

    Ive been holding off buying pv cable as a lot of the ones on ebay dont describe whether they are pure copper. Yesterday I messaged two sellers and they both said they only sell tinnes. what conductor doyou have in your pv solar cables?
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    Milk crate Portable 100ah

    Love your dc fuse box setup!
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    Why isnt my benchtop charging my batteries?

    The aH should be 272aH as reflected in my app settings. Attached photo of battery specifications. Which setting in the bms do i adjust? What exactly is happening with the charging moffett and why must i turn it off?
  19. S

    Why isnt my benchtop charging my batteries?

    13.45V WHOLE PACK 3.36V,3.35V,3.36V and 3.36V voltage of psu is same as the displays
  20. S

    Charging with benchtop in series

    Yep chg MOS light in app going green and grey
  21. S

    Charging with benchtop in series

    The only setting that I have that reads 3.4V is the balanced open start volt. Photos attached. Any clues? I think I have seen the charge MOS thrning on and off in the app
  22. S

    Why isnt my benchtop charging my batteries?

    Batteries in series Voltage of benchtop at 14.6V Current all the way to the right completely randomly the benchtop display jumps to something like 13.6V and 9ish amps
  23. S

    Charging with benchtop in series

    Gosh this stuff can get fiddly and frustrating... Why is my psu jumping between pushing current to not pushing current? Only displaying voltage and clamp meter reads no current being pushed. I have the current knob set to max see photos for where the psu jumps between. Right now it is just...
  24. S

    Charging with benchtop in series

    see below
  25. S

    Charging with benchtop in series

    Thanks Mike! I have a 50A inline fuse normally attached to the positive of the battery. Are you suggesting I keep this attached while also charging with the psu just in case? fortunately the output of the psu cant exceed 10A
  26. S

    Charging with benchtop in series

    Just realised I didnt have the psu connected to the P- of the BMS! fixed image
  27. S

    Charging with benchtop in series

    Got impatient so I switched it on and set the volt and currents to max on the power supply
  28. S

    BMS/Inverter turns off after pushing 10A

    Hey !! Just an update, I bought a new crimper and recrimped which didnt solve the issue- the problem was the nuts not being secured tight enough. I succesffuly used this pack last night while busking powering a valve amp! Snoobler thanks so much for all you do on these forums
  29. S

    Charging with benchtop in series

    hi all! last night I successfully used my lifepo4 battery pack for 3 hours while busking in the street. I powered a valve amp and several guitar pedals (even scored 10 bucks ! ) i want to charge the batteries up as they were at 60% soc on the app. There isnt much information on charging in...
  30. S

    Unicorn crimpers

    Where the heck can I find these crimpers in Australia? Work Horse Crimpers. Searched absolutely everywhere and they just do not exist!! For wire 22 -6AWG
  31. S

    BMS/Inverter turns off after pushing 10A

    Yeah, wtf is going on? I'm assuming my crimps on the inline fuse might just be awful? LOL as I was typing this, I just started wiggling one and it just came right out. I might go to bunnings and buy a proper ratchet crimper. I will update you once I've connected it to a proper lug. Further...
  32. S

    BMS/Inverter turns off after pushing 10A

    PowerTech 500W 12VDC to 230VAC Pure Sine Wave Inverter,Electrical Isolate MI5734
  33. S

    BMS/Inverter turns off after pushing 10A

    No load Battery positive and negative measurement = 13.35V Battery positive to inverter negative measurement = 13.35V Laptop load Battery positive and negative measurement = drops to as low as 12.94V, turns off after about 10-15 seconds turned on inverter again for next measurement Battery...
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    BMS/Inverter turns off after pushing 10A

    Oh I tried it in between measuring a few posts ago and yeah still not working. Powers down with the laptop charger plugged in. ill try it again now that its morning but since the value has not changed Im uncertain anything would be different.
  35. S

    BMS/Inverter turns off after pushing 10A

    WOOPS YOURE ABSOLUTEY RIGHT its 8.8mV on the battery positive to inverter positive I am super sorry, haven't gotten used to this clamp meter compared to my usual one
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