Ender Tank
The Ender Tank is a multiblock structure, and can store a lot of fluid in one place (64 buckets per internal block, by default). It requires power to perform operations - if you can't afford to extract stuff, it will simply taunt you.
Health Pads
Similar to the Charge Pads, there are three tiers of Health Pad: Redstone, Resonant and Creative. They will gradually heal you, half a heart at a time, with each tier having a different regen rate. The energy cost is configurable.
Exchanger In Action
The Exchanger will affect blocks in a given radius, one radius at a time (like a shockwave), when you right click.
Exchanger Radius
You'll get a visual representation of what blocks the Exchanger will affect.
Charge Pads
Charge Pads work in any orientation, and charge things in your inventory, and items on the ground, from up to two blocks away. This means you can hide it behind a block, but there's a loss of up to 50% if you're more than ~0.5 blocks away.