Needs registration?
I have to register an account with you to monitor my own battery over Bluetooth? That’s just stupid. Leaving that aside, it seems to work well enough.
Simple&Easy
Very easy to use.I can quickly connect my Wattcycle battery.
Newer Versions
The newer versions from 13.7.x work much better and have fixed the earlier problems with Parallel mode. My biggest complaint is that many places the app uses light gray text on a white background which is sometimes very hard to see. If they simply use black text it would be easy to read
Seriously broke
Had I known this would have never purchased your batteries. After purchasing 3 GC2 batteries I can only bind one of them to manage. If I change the name of one battery the other two entries on the home page repeat the changed name with the same MAC address. Obviously a major failure.
Horrible
The app actually stops you from using the battery. Ghost codes on the app keep you from toggling on discharge button needed for power. NO customer service. AVOID!
Update didn’t work
Cannot connect to battery after latest update
It’s Broken
Latest version, 25.13.3 does not work. App crashes when Bluetooth connects to the battery.
Unreliable Battery Control
The recent update in March 2026 isn’t able to control “bound” batteries without a data connection. I had to take my batteries out of the camper and find enough data coverage to refresh the Bound Devices (batteries) and enable the outputs.
Watt THE HELL?
These batteries and app worked fine. Then the updates. Go to settings & see why nothing works battery parameter is max discharge temperature 149°F per manual, but in the app, it’s 32°F max temp and trying to fix any of these gives “out of range” notification. WHY DID YOU MESS IT ALL UP Watt Cycle?! All the parameters are wrong in settings tab and you can’t fix any of them!!
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Needs much more work
Please document what you changed just say fixes made doesn’t do any good
This app has been absolute garbage
I have not been able to reliably get any readings on my two 314ah smart batteries. It’s very disappointing. It seems both appear to connect, but give me no readings from the BMS. I bought these just before the issues with the BMS software surfaced. I just want to be able to use these batteries, wish they had the dumb batteries available when I bought these. They are heavy bricks right now.
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Removed App Functionality
App had the ability to turn off battery via Bluetooth without requiring an account. I don’t want to sign up for your marketing emails just to operate my battery.
No Instructions?
It would be nice if there were instructions for setting it up with my Smart Mini LiPo battery. And, something that describes what the buttons do would be nice. The app also seems to disconnect rather quickly. It would be nice to set a timer for when I am cycling/discharging the battery.
Missing or broken features.
It’s possible for the “charging” screen button to get “stuck” in the off condition and there is no state of charge history only real time information. Both are unacceptable.
Won’t create an account
Won’t let me create account. Pop ups are not in English. App is t functional.
Horrible App
This app rarely picks up my battery's bluetooth signal. It's basically worthless. Don't waste your time downloading it.
Laughably doesn’t give bare minimum fonctionalities
Worst UX ever. Shame on Wattcycle
Barely functional
Well, it works to at least see some limited information on your battery. I setup an account to “bind” my two batteries. Got logged in. Tried to bind my batteries. It said I needed to be logged in. Which um yeah I already am. Logged out and in again. Restarted app. Tried everything. Acts like it wants to bind after capturing serial number, but still says I have to login in the “bound batteries” section. It also pops up some kind of message in Chinese. It must say “F-you” since it just won’t work. Do you test your apps? I mean why even offer an account with binding? Also in general the app feels like it was made in 2002. Very hard to find info. Not intuitive. Anyways. Dumb.
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PIN protection missing
PIN protection missing!!!!
Good but could be better!
I have been using the WattCycle app with a 12V 100Ah Smart Mini Battery for about 2 months in a small camper. The battery and app have performed well in a low load (~0-10Amp) environment. There are 2 annoyances I will like to see addressed: 1. When connecting to a battery with Discharge disabled, Discharge is ENABLED automatically. 2. Remove the selection confirmation screen when selected the battery / device to connect to. This is an unnecessary step.
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