Electric Bikes

[fixitsan]

That could be a big selling point for swapable batteries, as the technology improves you package different technology in the same casing, and your range increases as the bike gets older.  They standardised on AA/A/C/D/PP9 etc cells years ago, and they technology has improved through zinc-carbon, zinc chloride, alkaline, nickel-cadmium, lithium-ion, etc, etc. 

 

That's a good point