Batteries are at the heart of many aspects of modern lives. They power our phones, from 2035 they'll power our cars - and quite often they power our bikes too. Every battery does the same basic thing, but the difference between them is huge. In the same way that LEDs quickly became the only option for bike lights, lithium-ion is now completely dominant when it comes to e-bike batteries. (Pi-Pop's supercapacitors being an exception.) It's the same technology you’ll find everywhere from your ...
