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@rickst29, I appreciate your feedback and you've made me think about your point regarding the 5°C threshold for charging to begin. I will find out what Bely thinks of this.

In the case of my batteries, I've set up heating to switch on at 0°C and switch off at +5°C, and beging charging. You can set the desired thresholds in the BMS' BT App.

There's no way two of these would fit under the seat.

Thanks @ChristophL ? I'll try to record as much as I can during the project. I have two of these and they will go at the back, under the bed.

I tested the low-temp cut-off and charging heating functions and uploaded a short, but long video on YouTube about it.

So I did 'a' cold temperature test with the battery and put together a short video about it on YouTube. Main notes: when I plugged in the 15A Victron charger the relay(s) in the BMS went open/close several times (you can hear it in the video). After the relays settled in, App showed no current...

Thank you Jim

Question regarding the Dashboard on v21 and v26. My BMS has two temp sensors, one on the cells and then the one incorporated in the JBD BMS. The dashboard shows the temp of the BMS, but I'd like to change it to show the temp of the cells, but haven't found a way to do this. So now Temp-2 is...

Battery #1 Charged to 158,3Ah. ~15A for the duration of 12h10m yielded 158,3Ah So at least the capacity is as advertised for both batteries. I still need to figure out the optimal parameter settings for my use. I will also try to test if thew low-temp cut-off and internal heating are working...

Battery #2 disharged to 161,78Ah when the BMS undervoltage protection kicked in and discharging stopped.

Thanks. The thing is that both batteries connected fine with the v21 and v26 apps, but since this morning all BT apps seem to hang and crash with the other battery, The other battery works fine with all versions I've tested. The only thing that has changed in this particular battery that has...

Same issue. On Battery 1 all these versions work really slow. On Battery 2 all work well.

@WingNut - many thanks, I'll try to set these but as we speak, the Xiaoxiang is working randomly. It might ask me 1-10 times the password and when it finally opens, it seems to freeze before it actually crashes when trying to access the Parameters View or anything else. I've tried v21 and v26...

Doing the capacity test. My testing seems to span several threads (sorry!), like in HERE. I will try to compile main findings HERE.

Battery #2 Charged. ~15A for the duration of 12h10m yielded 159Ah. After 12h I will start discharging it.

Battery #1 discharged. ~14A for the duration of 11h20m yielded 160.57Ah / 2030.27Wh. After 12h I will start charging it back up.

Thanks @WingNut - unlike you, I really have no understaning (but I'm educating myself), hence no opinions and therefore I'm at the mercy of the factory and others. I appreciate your input! Looking at the other parameters, is there something you'd question from the factory keeping in mind my...

Thank you guys! @WingNut, I'm currently doing charge (Victron Blue Smart Charger 12V/15A but I also have 30V/10A Adjustable DC Power Supply available) and discharge (Aliexpress 180W adjustable load tester) for these two Bely 12V 150Ah batteries (see attached screenshots) and the whole parameter...

Is it normal that when the battery capacity get down to about 10% the BMS cannot connect to the Xiaoxiang app anymore? I'm usin th 10.21 and while doing a capacity test and discharging the battery the Xiaoxiang app lost connection to the BMS. I can see the BMS in the apps but when I try to...

Hi guys. I'm trying to get grips with the Xiaoxiang BMS app. I'm using the version 3.1.1026 on Android to view and set parameters and function for a 12V 150Ah LiFePO4 battery. I've been searching and Googling but haven't found a source that would explain all the parameters and functions. I'm...

For what it's worth, I have two 150Ah LiFePO4 batteries with JBD SP04S005-L4S-150A-B-U BMS and I haven't had any issues with the xiaoxiang 10.21 BT connection. I UNLINK the one the BT is connected to and then click the other one and it connects fine. And vice versa.

Thanks! And I'll find that Will's video for reference. The BMS BT app shows the info on the images attached.

Hi all. I purchased a pair of 150Ah 12V LiFePO4 batties with BlueTooth BMS, low-temp cut-off and self-heating function (you can see more about them here: https://diysolarforum.com/threads/bely-12v-150ah-lifepo4-battery-with-bluetooth-low-temp-cut-off-and-heating.14625/) I'd like to test the...

Strange behaviour. I managed to change the xiaoxiang to something else as per your instructions. However, I cannot seem to do this renaming anymore. Even if I uninstall the app and re-run the .apk, the first renaming persists. It doen't revert back to xiaxiang after re-running the .apk. EDIT...

Thanks @WingNut for clarifying this for me!

Yes, but changing these has no impact on the text "xiaoxiang" on the dashboard.

Hi guys. I've purchased a pair of Bely 12V 150AH LiFePO4 battery with Bluetooth, low temp cut-off and internal heating. I've connected to the BMS via the Xiaoxiang app and this is how the factory settings are. I will be installing two of these batteries parallel to my camper van as household...

$1140 including shipping and DDP (to Europe) for the two batteries.

After a 3 month wait 1 of 2 batteries arrived yesterday. 2nd one should arrive Monday.

Thanks. That's where I looked first but couldn't see anything related to it.

Hi guys. I'm running Android V3.1.1021 with two batteries and was wondering if there's a way rename the BT connection / the name "xiaoxiang" (shown in the attached screenshot) to something else like Batt1 and Batt2 so I can see which battery's data I'm looking at?

Got the numbers for my batteries. As far as I understand, capacity seems to be above the specified, on paper anyway.

Hi guys I have ordered two internally heated 150Ah LiFePO4 batteries from Ali B. I started a thread in the Harsh Environment -group but things seem to be a bit quiet there or at least my post has not been very attractive. I'm a total newbie on this topic so I'm requesting if someone would be...

So, I went and dove in to the unknown and ordered two 12v 150AH LiFePO4 batteries with Bluetooth and heating function. The seller representative at least is really cooperative. She was keen to answer all of my questions before me committing to the deal and she has kept me updated on the build as...

Thanks @SolarQueen for your thoughts! Regarding my energy use, I assume using max. 100Ah's of 12V + max. 20Ah's of 220V through an inverter per day.