What kind of case do you store your lipo's on your bike?

Are reading a very long but wonderful thread on the "care of lipo batteries" I feel a little more confident about using them. I am curious, though, as to what kind of containers you keep this in while they are strapped onto your bike. I am guessing that a typical ping duct tape tossed into a backpack is likely to create a fireworks show! Pictures are welcome, along with a short description. Please also mention what size the pack is.

4 x 6S 25C 5AH Turnigy Packs, weigh 6lb in a plastic case from my local maplins store, this case is an equipment instrument case, I packed it with rubber to protect the packs. Sits in a seat post mounted rack pannier bag.

http://endless-sphere.com/forums/viewtopic.php?f=14&t=19399&hilit=knoxie+get+some+new+toys&start=45

Go with lipo you will love it!!

rear mounted topeak bag ( i found one cheap ) that is not waterproof... but i have the batteries in a LP-sack and tiny drain holes are drilled into the bottom of the topeak bag, in case water gets in.

As long as the batteries hang out in the center, they should keep 100% dry.

no problem for me, I carry of these in the side pocket, totally covers it and any side panniers totally waterproof

I'm considering something like these blow molded cases.