Originally Posted by Tom Frank
Answered in the external power link in Post #3. FWIW, my new Jumbo has that buzzing sound with a fully charged battery! VERY faint, but I can hear it with my not-so-great hearing if there is no other sound on the recording.
I read that and you got approx 100 min more with external pack. I get no more time and it starts buzzing within 50 min so I actually get less quality time with the external. Sup?