How much over 14 volts will be hazardous to the KX1? Reason I ask is the 7.2V 1200MAH LI-ION BATTERY PACK CAT# LBAT-35 at www.allelectronics.com looks like a great external light-weight battery pack and it's rechargeable. However, 2 of these guys will yield 14.4Volts! Yikes! Don't want to smoke test my KX1!! Would 14.4 volts be a real problem??? Steve/n0tu