What I really am looking forward too is when they get the new four way chemistry that uses Nickle, Iron, Zinc, and Air-vents to allow Oxygen reaction to make a non-toxic high energy energy battery that has nearly twice the storage density and slightly higher cycle life at way lower costs then current Lithium batteries with similar life spans. They have already developed that technology for large stand-by back-up storage capacity for hospitals and such (batteries the size of 18-wheeler trailers) and are just now starting to experiment with them in electric cars. Can't wait until they get them down to e-bike size especially since their a semi-local product for me (engineering firm that developed the technology is in my state but they have the actual units made else-where).

Very much looking forward to a non-toxic battery chemistry that packs twice the energy density at a lower price tag then Lithium batteries, but for now lithium based batteries are as good as it gets for e-bike sized batteries.