Hero Electric Optima Li packs a 48 V, 28 Ah Lithium-Ion battery that takes 5 hours to get fully charged. Moreover, battery life gets lower in 2-3 years. However, the life of a battery would depend on certain factors such as charging cycle, usage of the scooter, riding conditions, charging source output, timely maintenance, etc. For more details, you may get in touch with the nearest authorized [dealership@https://www.bikedekho.com/showrooms/hero-electric