Dangerous
When using with my RDX4 it causes the charger to over discharge, or overcharge my lihv batteries. It was set to stop at 4.35 per cell and I caught it at 4.40+. When using the charger without the Bluetooth app, it seems to work properly. Using with the app for some reason makes the charger do weird things. If you use the app at all, when charging is done, you can’t use the charger buttons on the actual charger to start another charge. You either have to use the app and hope it doesn’t glitch the charger further during another charge, or power cycle it. Yes, charger has the latest firmware.