I am with you, that is why I use a 10,000mah power bank on a solar charger for field charging my phone, don't want to take the chance with a $150 battery.As I said it COULD. I have no idea where the low voltage cutoff is located in the power stream... in the battery or in the Phantom. Considering the balancing is done internally it could be fair to assume the cutoff is internal to the battery. but I would hat to throw away a $150 battery just because I charged my phone!