Are lithium-ion batteries the only game in town when it comes to electric mountain bikes, or are there other, lesser-known battery technologies that could potentially revolutionize the sport? Ive heard whispers of sodium-ion and zinc-air batteries being developed, but whats the current state of affairs? Are these alternatives still in the experimental phase, or are they already being implemented in production e-MTBs? And if so, what are the benefits and drawbacks compared to traditional lithium-ion batteries? Are they more environmentally friendly, or do they sacrifice performance for the sake of sustainability? Lets get the conversation started!