Nope, saw the question mark. Like others have already mentioned it's pretty silly to deduce something like that from a non gameplay trailer. By that same reasoning we can somehow no look one hand rifle shot something

Ow my bad. I thought the t-60 was already part of established lore. I must be confusing it with some other power armor.

The NCR had troops that wore power armor as well that wasn't powered for protection. In game they mention that its very heavy and cumbersome to use.

From the Fallout Wiki - http://fallout.wikia.com/wiki/Power_armor

So maybe the early versions of power armour are like the T-45d where we'll need lots of cells and the more advanced and later models, later T-50s and T-60s, that we can find will have the Microfusion Packs letting us to effectively use it as much as we want.

There's a kind of power gauge in the PA screenshot. (first person view inside PA)

Since Bethesda now considers a Power Armor a vehicle, i suppose it needs refueling. I consider that confirmed.

I'm waiting to mark confirmed on anything until the day of release.