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
Have a smart mini 314 . It is at 97 percent state of charge Have a warning "hardware protect, battery is not supplying power.
After 10 days, one of my 2 batteries stopped responding tot he app. Later today, that battery stopped appearing on the app. I restarted my phone. Still not responding. Uninstalled the app, restarted my phone, reinstalled the app, and it still does not appear. The other battery still responds. The chat function on here seems pretty useless! I have been waiting 30 minutes…no agent yet!
Cannot connect to my 12v100ah trolling battery BMS, nothing displayed in BMS Meta app when starting on iPhone.. What do I do to connect to my battery?
Battery appears to be working fine, charges and operates a 12v1500w120v inverter.
This would be a nice feature but can not get it to work.
Is my BMS functioning correctly. This concerns me that all might not be functioning normally.
If BMS is not fully operational, I would like WATTCYCLE to replace it before a potential impact.
Thank you,
Greg
St. Louis, USA
I have 6-12V 314 Mini Batteries, I have an issue with the batteries staying in standby. How do I get all batteries to discharge at the same time so the % of batteries stay equal. I am using ISO IPhone. Also is there any way to see the status of all batteries at the same time.
My battery, a 12v 100Ah smart mini, was charging fine until I connected to the app. I pushed the charging button and it stopped charging. Now the charger says that the battery is full, but the app say only 72%. Now what do I do? I know it isn’t fully charged.
Buongiorno sono un vostro cliente ho acquistato due vostre batteri da 100ah ma ora avrei bisogno della password per settare i miei parametri di protezione potete gentilmente inviarmi la password della app bms meta per settare i miei parametri di protezione è urgente grazie mille
What does the charge and discharge button do on the app for the (2x) 314 amp hour smart 12 volt battery?
When spending $1k+ for batteries, it would be nice to a clear explanation of what each of the button/ setting does.
I installed 2 100ah mini batteries in parallel they will charge togather. But when you discharge(unplugged from shore power) sometimes both report discharge and at other times only one discharges while other is in standby. Support said this is normal. These are just installed and we’re charged up. I was perform a hold up test with only my rv frig running. Did ok 2.3 days. Upon second test after recharging both. I was 1.5 days into test and both batteries dropped I to standby and I lost all power on trailer. I believe these don’t work well in parallel mode. The two bms units are not designed properly to work in parallel
Just installed 314AH in 2025 travel trailer with factory solar panels, controller and inverter. 100% charge and only thing on was led lights. After an hour went into hardware protect and will not reset. 75°F 98% charge. Total POS. Putting lead acid back in until I find a more proven LiFePO4.
I’m getting “Pack OV Alarm” error on my 314ah smart battery. What does that mean? Where do I find a list of error codes for future reference?
Also cannot get BMS app to connect to battery. iOS iPhone.
Thank you, Jeff Neeley
I’m getting warning messages – hardware protection. Why and how can I reset the warnings and reactivate the battery? How long will it take to automatically reset?
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?