I don't know if this translates to the Thunderbolt and LTE or not, but I've always experienced crappy battery life when Verizon starts messing with their towers.
If they are servicing the CDMA towers, the radio starts searching & doing stupid stuff and can drain a freshly charged battery in 2 hours (on my V3c Razr). It can last for a few days until Verizon finishes. The first time it was happening, I actually bought a new battery thinking it was just the existing battery being old. But the new battery died just as quickly. A few days later everything went back to normal (2 or 3 days between charging) and even my original battery held for a day or 2.
Knowing this and the mere fact that my location will be one of the last to get LTE (no fiddling with the towers), my battery life has been great. In fact yesterday, I was only down 50% after a full day of being off the charger. (Very light use). So, if you are in one of the areas that is much higher on the list, the crappy battery life MAY be a result of tower upgrades and such.
FWIW.