Board Thread:Questions and Answers/@comment-25869229-20160510170711/@comment-4651179-20160510175426

According to a schematic from, the Iron Spider Armor is powered by nano-scale batteries that can generate up to 1.2 kWatts. They are located in the titanium nitride chestplate of the suit. Here's the entire suit diagram, it's pretty intriguing.

So far I haven't seen any official sources that indicate that the Hulkbuster can work with other armor apart from the MK XLIII. My best guess is that it shouldn't, considering each armor has its unique plates sectioning, and I believe the parts of the Hulkbuster connect with the surface of the armor underneath, they don't simply get on top of them. However, it would make sense for the Hulkbuster to work with other armor, considering Stark constantly innovates and creates new "main" suits (i.e. those that aren't specialty armor). If it didn't work with other armor, the current model of Hulkbuster should in theory have been rendered useless, considering Stark moved from MK XLIII, and it would require for Tony to acommodate.