by Ricardo Fernández Serrata
Sounds an alarm when device is charging but the battery is still draining. It also detects if the charger is connecting/disconnecting very frequently ("flickering charger"). Only useful if you have a problematic charger, cable, device "hole", wireless coil and/or an app is power-hungry.
The value under the dictionary key "current_now" (from BATTERY_CHANGED broadcast) isn't available on some devices, so I didn't use that broadcast because I wanted to increase portability. Also, that broadcast isn't reliable if the charger is "flickering"
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