What are the different types of electric Bike Batteries? There are sealed lead acid SLA, Lithium-ion, Lithium Iron Phosphate and a few others but the most dominant are Lithium Manganese Cobalt which come in 18650 cylinders (similar to AA sized) that are also used in electric cars. This same type of chemistry is often used for mobile devices (like cell phones) and is therefore widespread and more affordable. It is energy dense and can last for 1,000+ charge cycles if cared for properly.