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 |
63 comments
Can not connect to apps. Tried old and new. What steps should be taken.
I’ve used several Bluetooth batteries and their respective apps, all see to be quirky in their own way. Your instructions seem to skip the user information. Mostly how to connect to the battery. I can’t make it charge. I’ve tried to toggle the charge and discharge tabs and the battery just sits there at 25%.
BMS app for 2x 314ah displays the devices bit gives device connection time out. So no connection. How to solve?
Just received 2x 314amp however wattcycle app is very basic. Do I need to install the BMS version?
Need clarification – I read that Wattcycle App doesn’t provide cell-level data on an iPhone for 280 AH mini. Is that true or has the app been updated?
Please update manual for new app. What does standby mean? Are there notifications as the other user asked? Do I need to update the settings for my battery?
The instructions provided on the site do not match the app and it would be nice to have instructions that would actually show you what each selection means.
So basically, there is no effective app available as promoted.
All of the questions are relevant to all users. Can answers be put in an FAQ please to be respectful to users.
I like the app, but the instruction manual in the app doesn’t match the software. The manual refers to “BMS Meta” – it looks like it has features not present in Wattcycle.
I like the idea of an app, but it’s hard to get the most out of it when I don’t know how it’s supposed to work.
For a quality product like this, a little improvement in the app is necessary.
1. I can’t understand why it’s not possible to indicate the time remaining until the discharge limit specified by the user, not the BMS’s.
2. And if I had to ask, an notification when the user-set limit is reached. It would be almost perfect.
Thanks a lot
What does the charge and discharge button do on the app for the 314 amp hour smart 12 volt battery?
When spending five or $600 on batteries it would be nice to have better documentation and explain what each of the buttons do and why doesn’t all of the data work on the app like amount of cycles.
Where can I find the error code explainations?
Like others, I bought a newer 100ah Smart Mini. Received it today, and finding out that these newer ones won’t work with the older Bluetooth BMS Meta app. Downloaded the newer version and it does work on my iPhone 5S, but unfortunately, the view of the monitoring information on the screen is all jumbled together. This was NOT the case with the older BMS Meta version. I was able to download the new app onto my iMac, and it works fine on that and the viewing is OK. But like others, I am not a fan of this newer version. I’ll just put this one into my 4-pack of parallel batteries (1 of which is a Smart version) for an emergency inverter and use one of my older ones for traveling in my car to plug my electric 12-volt cooler into it.
What is the password or where can I get the password
I like the feature of the older “BMS Meta” where it displays the voltage of each individual cell. Is there a way to get the new “Wattcycle” bluetooth app to display each individual cell’s voltage??? Right now, it can only display the total system voltage.
Bought 2 12 volt 100 amp batteries. Can’t connect with Bluetooth. Both apps not working. Please advise. Thanks.