Useless…
Anytime I move more than 10-15 yards away from the battery, the app looses connection to the battery. Then, the only way to get the app to reconnect is to turn the battery off and then back on. When I do that, I’m looking at the battery’s screen, so there’s no need to use the app.
The WiFi only works with 2.4 GHz.
Also, why is it necessary to create an account to monitor a battery?