bluetooth BMS?

[EbikeAus]

Hi all

I'm having an issue with my 4s 80 amp Lifepo4 bms mounted on 4s of 60ah CALB cells in a DIY power case I built.

When I charge with my 20 amp wall plug charger, the xiaoxang software dies.

It all works perfectly while discharging. My loads are up to 50 amps.

Would appreciate any input ✌

Is the BMS hooked up with separate charging and discharging wires, or just one wire for both? Got a link to the BMS you bought?

Hi

Yes I have separate cables for charge and discharge.

I'll try upload some images and link

https://imgur.com/a/NSGH70m

https://imgur.com/a/e8hI5YG

https://imgur.com/a/IBRUiUl

Thanks

[EbikeAus]

where did you buy the bms from i wouldnt mind getting my hands on one!

Aliexpress mate
I'd recommend it, apart from this issue I'm having ✌

[EbikeAus]

Does anyone have any clue, or experienced this issue?

[eee291]

you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here

[EbikeAus]

you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here

Thanks for the reply! I will do that.

I tried another variation of the app (see below)

https://imgur.com/a/ISwqPDl

At least this one shows charging but only has one screen with limited data. No individual cell voltage, which I like to have. (See below)

https://imgur.com/a/hqdoqpC

https://imgur.com/a/ZQOWS5K

I will do some more tests as you suggested.

[Dishwashertaco]

Greetings guys,
Just started having issues with my 14S7P battery with a JBD SP15S001 v.1.6 BMS (60A v.). Had issues finding the bluetooth module (no blue light) and my electric scooter cut power as soon as i would accelerate hard.
Decided to open up the sucker, and found a burnt resistor (?) on the board. Have attached a photo of how it supposed to look like, and mine Unable to identify the marking, either its "10E" or "301" depending on the orientation you read it.

So my question is, does anyone know what this resistor does? What would cause it to fail?

Thanks in advance for any input!

Edit:
When further thinking about this, it might be worth mentioning that the 14awg charge cable in addition to a 14awg cable supplying a scooter horn was routed right on top of the resistor (inside the heatsink-casing) to save space. Max charge amperage is 7A and the horn is supposedly not using more than 0,2A (which i have not tested). But with 14awg and the amperages mentioned, heat transferred from the wires really shouldnt interfere with the resistor lying underneath? Charging and discharging are not done at the same time, so the resistor shouldnt heat up further from contact with the charge wire?

[eee291]

you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here

Thanks for the reply! I will do that.

I tried another variation of the app (see below)

https://imgur.com/a/ISwqPDl

At least this one shows charging but only has one screen with limited data. No individual cell voltage, which I like to have. (See below)

https://imgur.com/a/hqdoqpC

https://imgur.com/a/ZQOWS5K

I will do some more tests as you suggested.

You can swipe from the left, look for the cell voltages tab
and since it's not crashing while charging now that pretty much leaves just your phone I guess
could be fixed in the next update or not

[EbikeAus]

you could try a few things.
- try different version of the App
- connect with other devices. Android or even better, IPhone.
- disconnect all other devices from that box and use only the battery with BMS
- try other Bluetooth module
- check/post all app settings on here

Thanks for the reply! I will do that.

I tried another variation of the app (see below)

https://imgur.com/a/ISwqPDl

At least this one shows charging but only has one screen with limited data. No individual cell voltage, which I like to have. (See below)

https://imgur.com/a/hqdoqpC

https://imgur.com/a/ZQOWS5K

I will do some more tests as you suggested.

You can swipe from the left, look for the cell voltages tab
and since it's not crashing while charging now that pretty much leaves just your phone I guess
could be fixed in the next update or not

No, there is no individual cell voltage when you swipe left with this version. As I said there is a single page of data.
My phone is a fairly current Samsung galaxy with latest updates, so don't think that's it either.

[serious_sam]

No, there is no individual cell voltage when you swipe left with this version. As I said there is a single page of data.

I'm running V3.1.1013. I would imagine similar to your version V3.1.1014.

There's a menu button on the top left. click that. Then select "Battery state". Then select "battery voltage".

01.jpg (50.89 KiB) Viewed 371 times

02.jpg (55.3 KiB) Viewed 371 times

03.jpg (72.43 KiB) Viewed 371 times

[EbikeAus]

No, there is no individual cell voltage when you swipe left with this version. As I said there is a single page of data.

I'm running V3.1.1013. I would imagine similar to your version V3.1.1014.

There's a menu button on the top left. click that. Then select "Battery state". Then select "battery voltage".
01.jpg
02.jpg
03.jpg

Similar but not the same.

There is no further data from front screen

https://imgur.com/a/Xng7aRY

The one I was using has that data but freezes when any charge is applied.


Do you have a link to the one you're using please?

[serious_sam]

Do you have a link to the one you're using please?

After you download it, remove the .txt extension.

[EbikeAus]

Do you have a link to the one you're using please?

After you download it, remove the .txt extension.

Thanks for the link but...
I'm not so tech savvy.
What do you mean remove txt extension?

[serious_sam]

After you download the file to your phone, you need to rename it and delete the .txt off the end. Then it will have .apk at the end, and you can run it on the phone which will install it. You may also have to enable "install unknown apps" in the \\settings\apps\advanced\special app access menu.

[serious_sam]

Similar but not the same.
There is no further data from front screen
https://imgur.com/a/Xng7aRY

I can confirm V3.1.1014 has had many options removed and is effectively useless.

[EbikeAus]

After you download the file to your phone, you need to rename it and delete the .txt off the end. Then it will have .apk at the end, and you can run it on the phone which will install it. You may also have to enable "install unknown apps" in the \\settings\apps\advanced\special app access menu.

Thanks, I have not had any luck yet will keep trying.
Meanwhile if anyone else has a more straightforward link to this version of software could you please share ✌

[maSch]

hi
I have an ANT BMS 24s mounted, all works well, however, I have no luck connecting the "(8) Meter: Copy signal of hall sensors" from my Kelly KLS96601-8080i to the BMS-Display.

I soldered a cable to the back of the Display-Board and connected it to the Kelly Pin8.
EDIT:
found this pic, so it seems I have the correct pin

Smart-Display-Hall Anschluss.jpg (46.06 KiB) Viewed 175 times

welded a new cable, still no speed

ANT_BMS_HallConnector.jpg (72.81 KiB) Viewed 175 times

might it be the wrong Hall connector from my Kelly? I definitely connected it to PIN8, but may it need the signal from the spare hall sensors?
a bit frustrated..

[Tantalum]

Greetings guys,
Just started having issues with my 14S7P battery with a JBD SP15S001 v.1.6 BMS (60A v.).

Hi, Not sure if it is too late but...

I have the same board, The resistor is 301(300Ω).
It's common for chinese manufactures to put a resistor in series with the Linear Regulator to share the load.
That Linear regulator supply's 3.3v to the microcontroller.
As the resistor drops the voltage by dissipating the power as heat, I would suspect that the silicone wire has insulated the resistor causing it to over heat.
These resistors are pushed quite hard in this configuration(see, every cheep bldc controller) and the little insulation might have been the tipping point.
Hope this helps.