Love your Evolve Bamboo Series GT or GTX but hate the battery life and range? Send it to me and let me upgrade it to an 18650 based 10S4P lithium ion pack. You buy the cells you want to get the amp hours and discharge curve you like, and send them directly to me. Then ill make a flexy pack out of them and replace your existing 36v 7ah (or 10ah, still lame!) prismatic pack with it. This service includes:
modifying your deck to accept the taller pack
tacking together the cells you send me and using your existing components to make the new pack
installing the new pack and leaving you with a bamboo that looks completely stock but has tons of range it didn't have before.
giving you the ability to leave your friends charging at home while you make the munchies run.