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  • Post in thread: JBD 7S-20S 200A relay cycling/clicking over and over

    Oups…. Software codes… not my cup of tea… Nevertheless, I managed the uart-rs485 adapter to communicate with my Cerbo through the driver from Louis van der Wall on GitHub. Apparently there was a bug in the driver at the time I tried to install it. This is now fixed and the system is up and...
  • Post in thread: Overkill App isn’t reading cell data

    Has anyone used the CAN adapter from JBD to connect to the Victron Cerbo GX ? I gave it a try yesterday, and it froze my Victron system.... Had to initialize the Cerbo completely with the manufacturers initial Software... I asked JBD to give me some details on how to work and connect with their...
  • Post in thread: Overkill App isn’t reading cell data

    Yep... I'm a newbie in this.... Following some internet fora since a while (e.g. Will Prouse, but i like very much the German guy down-under, Andy from the off-grid-garage, with his very educational YT channel... love the community that really wants to help people out ! much appreciated !
  • Post in thread: JBD BMS Relais Problem

    That’s what I’m trying to explain the vendor from AliExpress since more than a month but they keep saying I need to modify and re-modify settings. Apparently just to keep me busy. Off course they refuse to admit it is faulty and reimburse me or replace the BMS. ? I think I’m going to send them...
  • Post in thread: Overkill App isn’t reading cell data

    I’m on iPhone, so IOS. XiaoXiang electric app is V1.3.4 Overkill App is v1.3.13 BMS version I don’t know as I would need to connect the BMS with cable to pc software and I’m not able to do that right now. As it is close to nighttime where I’m. Will be for tomorrow. Much appreciated to have...
  • Post in thread: JBD BMS Relais Problem

    I have same issue but 0.4V difference between cutoff and recover voltage (high and low cutoff) doesn’t change a thing. The relay still goes on-off every second. Settings are: 3450 and 3050 high and 2550 and 2950 low cutoff and recover. Does anyone have other ideas how to solve ? Im discussing...
  • Post in thread: Overkill App isn’t reading cell data

    just opened the XiaoXiang electric app. I read: 4.d but also: BMS model DP12S002 V1.0 production date is 2023-4-28, but that seems to be the date i put it in operation, not the actual manufacturing date...
  • Post in thread: JBD BMS Relais Problem

    Meaning ?
  • Post in thread: Overkill App isn’t reading cell data

    do that right away. thx for the insight.
  • Post in thread: JBD BMS Relais Problem

    I have 3400Wp on the roof Victron Mppt charger 250/60 JBD smart bms 200A 16 LFP cells 280Ah Victron inverter Multiplus II 48/5000/70 and Victron Cerbo GX. Still connected to the grid. But should be almost independent from it. My consumption is quite low but I needed batteries to power some...
  • Post in thread: JBD BMS Relais Problem

    Victron kicks in at high & low pack voltages but not at cell level. Therefor the smart BMS who talks to the Victron. Or do I have it set up wrong ? Victron is programmed with ESS this is Energy Storage System for those who know the system.
  • Post in thread: JBD BMS Relais Problem

    Actually… the BMS is indeed the charge controller as it overrules the parameters of the Mppt charge controller. That is the function of a Smart BMS: take over the charge protocol from the MPPT. Unless it is faulty like mine and then the whole systems rely on a faulty part… Luckily the charging...
  • Post in thread: JBD/Overkill BMS CAN bus comms support for inverters

    Hi all, I tried to connect a my 200A JBD smart-BMS via their own CAN bus adapter to my Victron Cerbo yesterday, and it froze my Victron system completely.... Had to re-initialize the Cerbo with the manufacturers initial Software... I asked JBD to give me some details on how to work/wire and...
  • Post in thread: JBD BMS Relais Problem

    I had the clicking also with all cell voltages around 3.2 to 3.4V (can’t remember exactly …) and overvoltage cutoff set at 3.7V and recover at 3.4V So not only when the safety and recover were close to each other …
  • Post in thread: JBD BMS Relais Problem

    Many thanks ?
  • Post in thread: JBD BMS Relais Problem

    OK need to check into this futherb after next week. I’m gone the whole week and decided to shut down the system completely. BUT. I do not understand how the wrong setting inside the dvcc and BMS causes the relay of the BMS klick every second. Which was the initial reason for my concerns. I’m...
  • Post in thread: JBD BMS Relais Problem

    I had the battery pack top balanced again. At 3.6V per cell (approximately) I had a difference of max 10mV. Only 1 cell was a bit lower than the others. 15 cells were with a max difference of 2mV. Safety settings on JBD BMS are set to max 3600mV and 3500mV recovery. On the low voltage safety at...
  • Post in thread: JBD 7S-20S 200A relay cycling/clicking over and over

    I have pc connections that is not the issue… I have no clue what to change in the settings to stop the clicking. And in the XiaoXiang software is no FET settings possible.
  • Post in thread: JBD BMS Relais Problem

    What I understand is that between the low voltages and about 3.8 - 3.9-ish volt there is no way to tell if cells are unbalanced. So why would the BMS start clicking? Also I was tricked by the voltage at low stages. Now I see I need to top balance better (next week). Beginners fault assuming...
  • Post in thread: JK BMS Current Consumption (JK-B2A8S20P-H)

    I had the same question regarding “charg. plugged”… I contacted the manufacturer/seller on AliExpress and they informed me it is the indicating whether a heating pad is connected or not. So the indication is rather misleading. I made the suggestion to change this description in following...
  • Post in thread: JBD BMS Relais Problem

    What I understand is that the BMS takes over the lead in the charging steps. All parameters like over and under voltage on cell level and on battery pack level are programmed into the BMS. Beside that there are also other safety parameters like shortcut protection and over and under temperature...
  • Post in thread: Overkill App isn’t reading cell data

    The app is connected to a 16cell 280Ah battery pack and is reading and writing the configuration parameters correctly but I don’t get any cell data. Anyone with some ideas what might be wrong ? PS. On the XiaoXiang app which I used before the data seem correct.
  • Post in thread: JBD/Overkill BMS CAN bus comms support for inverters

    For the time being, I work with serial connection via the driver of Louis Van Der Wall on Github. Many thanks to all of them ! After some troubles, I finally managed to upload the driver to my Cerbo GX, and it seems to work that way.
  • Post in thread: JBD 7S-20S 200A relay cycling/clicking over and over

    Unfortunately I do not have this setting on the XiaoXiang App or the XiaoXiang pc software. and now the overkill App is giving me problems too… I can read and write the setting parameters but I don’t see any cell information anymore. And the FET settings can’t be changed in the App either. I...
  • Post in thread: JBD BMS Relais Problem

    Driver from Louis van der Wall Serial bus
  • Post in thread: Solar panel circuit breakers ?

    Hi to all, The BIG question I have is following: Why use large diameter cables (70mm² or 2/0 AWG, as recommended by manufacturer of my PV system) when a breaker or switch is placed in the line between battery and inverter ? When I open some switches to look at the interior switching mechanism...
  • Post in thread: JBD BMS Relais Problem

    3.65V is in my opinion too high. Ok this is rather a strategy, not necessarily “the truth”. I follow guidelines from Andy from the off-grid-garage in Australia with his YT Chanel. There are a few reasons why these settings and I believe them. Mostly like longevity of the cells. As you stress...
  • Post in thread: JBD 7S-20S 200A relay cycling/clicking over and over

    Any update on this issue ? FET settings to zero… no clue where to change this settings. I have the XiaoXiang app the overkill solar app (which read the same JBD BMS) and the XiaoXiang software installed on my pc. Can’t find the FET settings anywhere… I have the same problem. Would shielding...

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