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Power Electronics

Zinc-Air Battery System

QuantumSphere, Inc. (QSI) announced availability of its MetAir™ Ranger series for on-demand back-up power in off-grid and emergency applications. It is said to offer the highest energy density of any commercially available primary battery at the lowest cost per kilowatt hour. The MetAir Ranger portable power system has received independent validation that it surpasses the industry's 72-hour emergency preparedness benchmark. The system achieved an unprecedented 108 hours - four and a half days - of instantly accessible emergency power.

The MetAir Ranger, a 3.2 kilowatt hour battery system weighing less than 25 pounds, yields energy densities of 352 Wh / Kg and costs per kilowatt hour of less than $200. While one system is about the size of a single deep cycle lead acid battery, it is roughly half the weight and has 11 times the equivalent energy per kilogram. It is also designed to accept easily replaceable power cartridges once the initial multi-cell stack is "air" activated and used up. It is essentially a "plug and play" box of portable energy and requires no external energy sources to stay charged. The MetAir Ranger has an optional 150 watt 110 volt AC inverter with two outlets and a USB charging port. It contains no hazardous materials or combustible fuels and, unlike large format Lithium batteries, is approved for transport by the Department of Transportation as non-hazardous material.

Compared with commonly available battery types used today, such as Lithium-ion, Nickel metal hydride and Lead acid, QSI's technology is based on a safe and proven zinc-air battery chemistry that is cost effective to manufacture and easy to use. Zinc-air batteries are electro-chemical batteries powered by oxidizing zinc metal powder (a non-combustible, non-toxic and abundant domestic material) with oxygen from the air to generate an electrical current. Zinc-air batteries have very high energy densities and a shelf life of up to 10 years before initial use. Sizes range from very small button cells for hearing aids, mid-size for remote portable power applications, to very large systems used for electric vehicle propulsion.

QuantumSphere, Inc.
Part Number: MetAir Ranger

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