There seems to be a never-ending stream of new battery technologies looking to replace the venerable lithium-ion chemistry. Today, new advances in zinc-air batteries are making them look increasingly more viable as a suitable replacement, with the potential to squeeze five time the charge into a battery comparably sized to its lithium-ion

Source: Hot Hardware – Researchers Refine Zinc-Air Batteries With 5x Capacity To Lead Charge Against Lithium-Ion