WattCycle Bluetooth Guide
WattCycle Parallel Mode V25.9.28 has been officially released.
New Parallel Mode with two selectable modes:
- ExactMatch Mode: Precisely matches all paralleled batteries of the same WattCycle brand.
- Compatibility Mode: For parallel connections with batteries from other brands.
Update Guide:
1. Update the app to the latest version.
2. It is recommended to restore factory settings before configuring parallel connections (if you have already updated the settings).
Google Play Download
App Store Download
WattCycle’s official new Bluetooth Battery App is now available for both iOS and Android. iOS users can download it from the App Store by searching “WATTCYCLE” and Android users can find it on Google Play. The original version will remain active, so feel free to choose the one that suits you best. The latest version offers enhanced features—including New Parallel Mode, Fahrenheit conversion and parameter adjustments—to meet all your needs. Please update at your earliest convenience. For any inquiries, contact service@wattcycle.com.
For original version (BMS Meta) Password is 888888
New WattCycle Bluetooth APP (WattCycle®) no need Password
Note：Alternatively, you can leave a comment at the bottom with your email address. We will reply to you via email, as we are unable to respond to your comment directly.
Codes Meaning of Warning
This is the code meaning of the "Warnings page" in the Bluetooth APP.
| Codes Name |
Codes Meanings |
| CHG OT Alarm |
Charging over-temperature alarm |
| DSG OT Alarm |
Discharging over-temperature alarm |
| CHG UT Alarm |
Charging under-temperature alarm |
| DSG UT Alarm |
Discharging under-temperature alarm |
| ENV OT Alarm |
Environmental over-temperature alarm |
| ENV UT Alarm |
Environmental under-temperature alarm |
| MOS OT Alarm |
Mos over-temperature alarm exists |
| Cell OVP(V) |
Single cell over-voltage protection |
| Cell UVP Alarm(V) |
Single cell under-voltage protection |
| Pack OVP(V) |
Pack over-voltage protection |
| Pack UVP(V) |
Pack under-voltage protection |
| CHG OCP(A) |
Over-current during charging |
| DSG OCP(A) |
Over-current during discharging |
| Hardware protect |
Hardware protection |
| High CHG volt |
High charging voltage |
| CHG OTP(°C) |
Charging over-temperature protection |
| DSG OTP(°C) |
Discharging over-temperature protection |
| CHG UTP(°C |
Charging under-temperature protection |
| DSG UTP(°C) |
Discharging under-temperature protection |
| MOS OTP(°C) |
Mos over-temperature protection |
| ENV OTP(°C) |
Environmental over-temperature protection during charging |
| ENV UTP(°C) |
Environmental under-temperature protection |
| CHG ON |
Charging |
| DSG ON |
Discharging |
| CHG MOS Fault |
Charging MOS failure |
| DSG MOS Fault |
Discharging MOS failure |
| Temp fault |
Temperature failure |
| Cells fault |
Battery cell failure |
| Cell OV Alarm |
Single cell over-voltage alarm |
| Cell UV Alarm |
Single cell under-voltage warning |
| Pack OV Alarm |
Pack over-voltage alarm |
| Pack UV Alarm |
Pack under-voltage warning |
| CHG OC Alarm |
Charging over-current alarm |
| DSG OC Alarm |
Discharging over-current alarm |
| Hardware protect Alarm |
Hardware protection warning |
74 comments
My battery does not charge or discharge. Need the password for my battery to check out the BMS status. XDZN_001_B67A. Tried 8s, 1s, 123456. None is working
Need the password for my new battery.
XDZN_001_8F65
Tried all 8’s didn’t work.
What is the password and how do the charge and discharge switches operate?
need a password for device name XDZN_001_DAE5
As others have asked, how do you change centigrade to Fahrenheit for battery temperatures??? Not all of us live in China thanks, Steve.
Please provide a password to set my own parameters for the Battery 12V 100AH Smart
Would love to see your BLUETOOTH equipped battery communicate with VICTRON ecosystem.
It would be a huge selling point!
Please make it happen.
Password is 888888
This app is as flaky as all get out. I have 8 batteries. The BMS Meta one is completely broken, and the Wattcycle BMS takes several attempts to get it to show data on the screen. Out of the 8 batteries, I have ONE battery that won’t put ANY data up on the app whatsoever.
I’ve tried two phones, both with the same results. (Both are Samsung A54.)
Quale codice devo inserire nell’applicazione?non riesco ad entrare dove si trova
Why does the discharge switch turn on automatically when I charge the battery with no load?
Your documentation booklet DOES NOT explain how the CHG and DSG switches work. Is bright green ON or OFF?
I just got 2 of the 300ah mini batteries and in both of them the tops came off is loose. Before decide if I return them or just seal them up I want to check the charge and capacity status with the app. However I can’t connect to them with Bluetooth. It is asking for a device name. In the instruction video it says that there is a sticker with the name but not on my batteries. There is a SKU number but that does work. So how do I connect if there is no device name showing up? Is the bms defective on both batteries?
I figured out the default password. It’s just a bunch of eights.
What is the best way to monitor the Bluetooth data using another device like a raspberry pi? I would like to be able to collect a history of data so I can track voltages and other data remotely or by using cloud services. Any Home Assistant integration?
I need the password to access the battery thank you