So the first thing I did was to remove the Battery Connector in the Yuneec Charger and make my own Fast Charge lead. 2 and 1/2 Hours to charge a Battery with the stock charger is just too long. I can now charge my Batteries in 40 minutes. Next, I decided to check the Battery indication on the ST16, to see if it was accurate. It is fairly accurate but the Battery alarms are set WAY TOO LOW and Can NOT be changed in the GUI. If I fly my ‘H’ until I see ‘14.6 Volts’ on the ST16, this represents Less than 10% remaining in the Battery and the 1st alarm has still not sounded. If I then Land and switch Off, the Battery Voltage jumps to ‘14.8 Volts’ (Normal, NO Load) and this is just 15% Battery Power Remaining - This is Borderline and the 1st Battery Alarm should have already ‘Sounded’. I don’t like running the Battery that Low, I think it’s dangerous as there is not enough reserve to get you out of a problem, it’s also Bad for the Battery. Now, I always bring the ‘H’ down at ‘14.8 Volts’. After it’s landed and switched off, the Battery Voltage recovers to ‘15 Volts’, that’s a nice 25% Reserve and a lot better for the overall Life of the Battery. I Charge at about 7.8 Amps with a 120 Watt Charger. This is about 2 Amps over ‘1C’ (5400ma). Homemade Charge Lead Shown Below.