Louisvdw

No, I don't know the AFE they use. My work is more focused on the DFE side. Some of the Daly BMS do use Sinowealth chips, and these have a different comms protocol than the other smart Daly BMS. There is some chip information in the Sinowealth PR, but again these are more on the DFE side. But be careful. It seems Daly use many different componenets for different models.

No, this model I am looking at use a common port. This is the model https://www.aliexpress.com/item/1005002608874846.html Do you perhaps have an Android app for AXEBMS that is in english. My model can't change from the chinese wich makes it very hard to use. The PC app is also in chinese. Only the manuals is english.

Sorry it's been sold on another forum. For some reason PF did not send me email notifications of the PM and replies. Out of intrest, QUCC does sell these and other JBD models under their brand, but it is JBD made and it use the JBD comms protocol. I have another QUCC BMS that I am currently working to add to my driver and that is actually a relabled AXEBMS. So from my experience QUCC is the relabled seller and not a manufacturer.

I have an new unused JBD AP20S004 13-20 cell BMS for sale - R2200. It has built in bluetooth and RS485 connectivity through the included RS485 to USB cable. This BMS can connect to Victron’s ESS systen using my driver and you can setup using the bluetooth app from your phone. BMS is from a project that never materialised. More details on the model here

The latest version of the driver now include support for many more BMS. LLT/JBD / Daly Smart / ANT / JKBMS / Heltec You can find more details at https://github.com/Louisvdw/dbus-serialbattery

A bunch of us is doing a group by. PM me for the details if you are interested.

No this will not work well for you. With 2 panels your 102.98V gives you 51.5V per panel and with 3 panels this will be 154.5V (will be even higher in winter). That is a bit too much over your limit. Your MPPT will shut down too much and you will loose production. I suggest you stay with 2 panels.

You loose very little. We are talking <5% so it is not worth buying an extra MPPT. I have a MPPT where the one string face East and the other string West and this works great. All panels on the same string have to face the same direction though. A assume this is 2S4P (4 strings of 2 panels in each string). You should be able to do 3 panels in each string (check your panel's spec for the Vmax). On paper your Vmax (the open circuit one) might be more than 50V which would limit your strings to 2 panels only, but in practice here in SA it is never so cold that you will get to that value. If you have been running your current install for more that 1 year you would have done a typical winter. So go check the stats on your MPPT in the Remote Console. Under Overall History you will see what the very max Voltage is your MPPT ever reached. If for 2 panels per string this is < 100V with some margin I will say it is safe to add a third panel to each string to get closer to the 150V Here is my 100/20's history with 2x 425W panels per string. The best thing is that even if you did go over the max for a little bit, your Victron SmartSolar has over voltage protection and will not break anything, but just shut down safely until the overvoltage has cleared. This is not true for all other manufacturer's MPPT though.

Hi @smurfdbn I'm currently still busy adding support for the Daly BMS (and hopefully some others there after) so the current version will not work for you yet. The rest of your setup will be fine for this driver. If you want to help with the beta test for the Daly then I suggest you subscribe to the Daly issue to get notifications, or subscribe to the support forum (link in the Readme)

That is a good question. You can use any version (3V or 5V) as this is not used. The cable's circuit is powered by the USB and the Voltage pin of the cable is only if the other side needs power (if you have your own circuit for instance). As the other side is the BMS and it is powered from your battery cells, it does not use external power. For this reason you only connect the Ground, Rx & Tx pins. (see Installation point 2. in the docs)

The latest build V0.3 of the driver has been released. With the new version the driver will automatically set your battery max voltage according to the amount of cells in your battery, so it will work out of the box for 4 cells (12V), 8 cells 24V or 15 or 16 cells for 48V setups (or anything in between if your BMS can handle it. it also has an auto installer that works with a USB flash drive/SD card which means you don’t need root access anymore. https://github.com/Louisvdw/dbus-serialbattery

No. Sorry. It run ons the Victron system. The Axpert does not have a control system other that it's internal firmware so that won't work.

If you are using a Victron system, then go check out my BMS battery driver.

If you don't set the MPPT to limit the charge to 50A then the BMS will trip each time you go over the 50A.

If you are on a Victron system you can also try my serial driver if you want. No Arduino required. Only a serial USB connector for your battery. The Daly does have a few changes to the commands than my battery. https://github.com/Louisvdw/dbus-serialbattery

Some threads to read

If you do go the DIY option, I would suggest you look at a BMS that do have some sort of communication options (the normal Daly does not, but they do have a Smart Daly version. Or the ANT, or Smart LTT/DJB BMS). If you do have comms then there is always the option to link it to your inverter in some way like the driver I did for the Victron system. https://github.com/Louisvdw/dbus-serialbattery

No, the study is about the impact of a mix on a single MPPT.

There was a study done that show only a 1% reduction for east/west panels. In my set up I see almost no reduction. It just adds and works very well.

Normally when you apply to do grid feedback they will come and install a new bidirectional meter. I'm not sure if this one will be, but the bi-dir are more expensive meters, and I doubt those will be installed by default.

As long as you can set the charge voltages you can use any solar charge controller (PWM or MPPT) With PWM it does not work well if you join panels in series. Then MPPT is preferred. So using 1 panel only, or only panels in parallel, then PWM is fine.

This on is my favorite. Might be closer to your Healey. Also: Freedomwon batteries started as a convertion for a Jeep Cherokee. You might want to talk to them as they are in SA.

You can add another bank in parallel. Charge both to full charge separately and then add them in parallel. That way they should have the SOC. It wont be perfect, but it will very close.

The is an ANT-BMS. It works well. We are working on adding this to my driver. But it does not have that interface yet, although the BMS is capable of serial communications (RS485 with the screen and bluetooth to your phone). This is a good option for a BMS. Let me try and explain it another way: All Victron equipment can work independently, but then you then need to set each one up independently as well. They can even work with other manufacturer's equipment. However if you do not know what you are doing this could potentially give you some headaches. In the Victron world if you want to interconnect the pieces and let them talk to each other, then you need some kind of GX device. There are many options with the easiest those that are built into the inverters. See the comparison list here. If you do connect everything, you get more that the sum of the part. This is where their ESS(Energy Storage System) comes from. You can also create your own GX device using a Raspberry Pi if you feel more adventurous, but as the Pi does not have all the same inputs as the other GX devices you need to use more expensive cables to make this work. So in the end if you don't already own a Pi (with power supply and case) then you will only save R1500 of the R5000 that a VenusGX or CerboGX cost and mostl likely even less than the built in GX cost. So my suggestion to make this much less complicated is to use a build in GX (least complicated) instead of a Raspberry Pi(most complicated).

No. Everything connects to the GX device (the Pi in my case). So the MPPT, the BMS and the inverter connects to the GX device. The GX is the brain of the system. If you do not have a GX device, then nothing talks to each other. On top of managing everything, it then also offer remote monitoring. My suggestion will be to take the Multiplus with the built in GX. It will make your install so much easier. Less (and cheaper) cables you need to buy and set up. That is the Daly BMS that they sell. It is a solid BMS, but with no communications. So it cannot talk to the inverter and the inverter has to guess the battery SOC (State Of Charge). It works, but you do get that what the system think the SOC is and what the actual SOC is get out of sync. When this happens there is less of the battery that can be used. So not an issue, but better if they can talk. Then you can use the full potential of the battery.