Can't get bluetooth to work

[littleharbor2]

So I just added a second battery and BMS 48 Volt system, same identical BMS and I cannot get connected to the Bluetooth app I don't know what's going on. Maybe somebody out there has had this happen and What I could do to get it to work?
This is the model I'm using, JK-B2A24S-15P

JK Smart BMS 8S-24S 150A Li-Ion LiFePo4 w/Active Balancer BT/RS485/LCD lot US | eBay

Lifepo4 range:8~24S. Li-ion range: 8~24S. LTO range: 13S ~24S. 1 JK smart bms (Built-in Bluetooth). Coulomb counter: Yes. Short circuit protection: yes. Balance mode: active. Bluetooth function : support for android / ios iphone.

www.ebay.com

 

[littleharbor2]

So I just added a second battery and BMS 48 Volt system, same identical BMS and I cannot get connected to the Bluetooth app I don't know what's going on. Maybe somebody out there has had this happen and What I could do to get it to work?
This is the model I'm using, JK-B2A24S-15P

JK Smart BMS 8S-24S 150A Li-Ion LiFePo4 w/Active Balancer BT/RS485/LCD lot US | eBay

Lifepo4 range:8~24S. Li-ion range: 8~24S. LTO range: 13S ~24S. 1 JK smart bms (Built-in Bluetooth). Coulomb counter: Yes. Short circuit protection: yes. Balance mode: active. Bluetooth function : support for android / ios iphone.

www.ebay.com

Am I the only one unable to wake up the Bluetooth?

 

[RCinFLA]

To pair a JK BMS to a phone app, open the dedicated JK BMS app on your phone, enable Bluetooth on your phone or tablet, then scan for available BT devices and select the particular new JK BMS from the list; you'll likely need to enter a default password (usually "1234") to establish the pairing connection.

Each BMS has its own BT address but you might not know the two different BMS's address. Turn off the old BMS that you previously had working to avoid confusion on which one is the new one you want to pair with.

Once you have the new one paired you can turn on the old one and both should show up in app list. You can only communicate app with one BMS at a time and have to manually select between the BMS's. You can rename the BMS's so you can easily identify between the two.

 

[littleharbor2]

Yeah, I'll give it another shot today. I've used this app plenty of times with all the batteries I've built and for some reason it's not waking up, Bluetooth is on and nothing is working .

 

[littleharbor2]

Still no joy. Have contacted JK Support. I'm a bit surprised at the minimal replies here. It must be a rare occurrence to not have the Bluetooth work on these JK BMS's. I'm hoping somebody this has happened to will chime in.

 

[HRTKD]

It sounds like you've done your due diligence. I would ask the vendor for a replacement.

 

[hardtop]

DOA

 

[littleharbor2]

Well, here's what happened The BMS that I got did not come with a power button. I grabbed the power button from one of my others and plugged it in and voila, Just fine. So a whole lot of wasted stress for such a simple fix, as usually is the case.
I have connected these BMS's, JK brand. before without Switch and they worked just fine But for some reason this one would not without it.

 

[jfmusic]

HI, same problem. I have an original box as unit 1 without a power switch, and that one I was able to connect to Bluetooth. The newer box has the power button and since I plugged it etc. I have no connection to bluetooth.
It powered on by itself when I connected the Jumper connections between the batteries.

Can you please explain your process after you added the power button? Was it on both Boxes? Or the 1 box or the 2 box? Thanks

 

[littleharbor2]

HI, same problem. I have an original box as unit 1 without a power switch, and that one I was able to connect to Bluetooth. The newer box has the power button and since I plugged it etc. I have no connection to bluetooth.
It powered on by itself when I connected the Jumper connections between the batteries.

Can you please explain your process after you added the power button? Was it on both Boxes? Or the 1 box or the 2 box? Thanks

When I added the second battery bank, without the power button, was when I could not get the Bluetooth to work on the second battery bank. The first one had the power button already, so when I put the second button on is when everything went to as it should be.

 

[jfmusic]

Thanks, i found from the Vendor the DIP switch chart I had was wrong. So Bluetooth now shows up. But now I see the second/new unit... with the power button(both) App, showing a red dot next to the unit in the MIXED pulldown and won't allow me to enter the battery.