ANT BMS-Testing low SOC of my 20s6p 32640 LiFePO4 battery

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  • Опубликовано: 22 дек 2024

Комментарии • 13

  • @imho7250
    @imho7250  Год назад

    0:00 Starting with a fully charged and top balanced battery, disable all automatic balancing and drain the pack.
    0:48 when the pack is getting nearly empty, test peak load your system typically experiences to see if a brick sags lower than the lowest capacity brick.
    1:36 we can see brick #4 is lowest voltage from 0 load to peak load, so it is the main one to beef up.
    1:56 we know as soon as any group drops to 2.5v, the BMS port will close and the system shuts down.
    4:28 If cells were tested for capacitors and resistance, and then matched as good as possible, you will get most from the pack.
    5:02 when volume gets below 3.0v there’s not much energy left inside.
    5:10 if you can get all groups below 3.00v before the lowest hits 2.5v, with no balancing along the way, its pretty good.
    5:56 cell differential is almost 0.08v. An active balancer could mask the problem and let you get more energy from a bad pack.
    6:00 but every transfer of electrons on the bottom will need to be reversed during charge, which is why active balancer shouldn’t be used except in rare circumstances such as a bad cell while awaiting repair.

  • @raulsalgado4549
    @raulsalgado4549 Год назад +1

    Hello. I have a scooter with a 50 amp CATL battery (20 cells). I would like to know how the BMS would be configured from the app. I have an 80 amp BMS installed with continuous peak up to 200.

    • @imho7250
      @imho7250  Год назад +1

      It depends on the controller, the motor, the charger, and the way you want to monitor the battery.

    • @imho7250
      @imho7250  Год назад +1

      Also it depends if you used both sets of AWG10 wires from the ANT or just 1 wire. Using both wires in and out will allow it to supply over 80a for longer before heating up.

    • @raulsalgado4549
      @raulsalgado4549 Год назад

      @@imho7250 I have a Votol m50 and a 1000w Rayan motor. The charger is a 72v5ah. Really I want more kilometers per charge. My BMS is a ANT BMS 8s - 22s 80A continuos peak 200A

    • @imho7250
      @imho7250  Год назад +1

      @@raulsalgado4549, ok, so if the battery is healthy and balanced, you can pretty much just go to FastSettings and enter 20s, 50AH, click Li-ion and then save and everything will work well or at least safe. If your cell differential is high you want to get it balanced and then make sure it balances at the top based on your charger’s open voltage.
      The ANT will set max voltage at 4.200v by default and you might need to give it a little wiggle room and raise it to 4.25v. This allows the charger more room to taper down and keep trickle charging while its top balancing.
      After you get it all top ballanced and fully charged, you can clear the charge and dischsege cycles and observe the battery while driving and when you see any cell(s) start to deviate more than 0.02v at rest, watch the low cell carefully and discharge until the lowest cell sags to about 3v under acceleration. This will be basically all the energy you can safely get while leaving enough to limp home in turtle mode. Votol soft low voltage will help limit throttle if you set it at about 72v. Votol low. Voltage should be 50v. Then what’s your cycle AH shows, x2, thats your useable AH. So if it shows 23.5ah, then 47ah is all you can use and you can put that in settings. So your SOC will report more accurately.
      After the ANT is all set to show you what you have, your range is 100% depending on the controller settings. You have 3 gears and you can set. Probably speed 3 will be set for max amps for acceleration and rpm set to bring cruise amps

    • @raulsalgado4549
      @raulsalgado4549 Год назад +1

      @@imho7250 thanks for the tips 💪🏻👍🏻. Greetings from Cuba

  • @jonezdatonetech2758
    @jonezdatonetech2758 Год назад

    Hi friend
    My ANT BMS app is not recognizing my battery, what can I do about this please ?

    • @imho7250
      @imho7250  Год назад

      Is the BMS on? Which app are you using? How old is your ANT? Are you using android or iOS?

    • @imho7250
      @imho7250  Год назад

      If you can make a basic video showing your battery, the ANT, with its red light flashing, and your phone, with Bluetooth on and paired to the ant if needed, and your app whats its showing when you try to connect, that will save 100 questions.