In our tests, I got eight hours of 3G talk time with the Thunderbolt, six hours of video playback time, and only 2.5 hours of LTE streaming. So what's an Internet fan to do?
HTC and Verizon will offer a very high-capacity extended battery, the companies told me. The 2750 mAh battery is nearly twice the capacity of the Thunderbolt's built-in 1400 mAh unit. The big battery will cost $49.99 and will be available very soon, said Pat Bucci, Verizon's director of accessory products.
The new battery makes the phone about an ounce heavier than its existing 6.5 ounces, and it comes with a new back that makes the phone deeper as well, Bucci said.
"We want customers who are power users, that are going to have the hotspot on all day, to just go," he said.