App is great! Here’s why…
I can connect any time I am near the battery. App provides me with: - state of charge % - number of charging cycles - amps being drawn - voltage - cell voltages - temperature And more. With the battery off or on, connected or disconnected to the charger. I wonder if some of the negative reviews are due to inexperience with smartphone apps, given a reasonable size of the demographic these batteries are being purchased by. I even found a youtube video on their youtube channel for connecting to the battery