Mastering Bluetooth: A Step-by-Step Guide

September 4, 2025
WattCycle Bluetooth guide

WattCycle Bluetooth Guide

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

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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
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Comments

  • Please update the manual for the new app. What do the charging / discharging buttons do? 2025-09-05 02:51
    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.
  • Marsilio 2025-08-25 15:22
    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
  • Jim rachels 2025-08-06 21:21
    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.
  • Glenn 2025-08-06 00:43
    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
  • Patrick Crockett 2025-07-28 03:38
    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.
  • Jeff 2025-07-27 23:49
    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
  • Vince Joseph Colizza 2025-07-26 00:56
    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?
  • Brian Trautman 2025-07-22 08:29
    Can not connect to apps. Tried old and new. What steps should be taken.
  • Rob Straughan 2025-07-16 07:20
    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%.
  • Herbert 2025-07-02 02:39
    BMS app for 2x 314ah displays the devices bit gives device connection time out. So no connection. How to solve?

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