Zinc matrix battery
Encyclopedia
The zinc matrix battery is a rechargeable
Rechargeable battery
A rechargeable battery or storage battery is a group of one or more electrochemical cells. They are known as secondary cells because their electrochemical reactions are electrically reversible. Rechargeable batteries come in many different shapes and sizes, ranging anything from a button cell to...

 silver-oxide battery
Silver-oxide battery
A silver oxide battery , not to be confused with a similar but different silver–zinc battery, which is a secondary cell, is a primary cell with relatively very high energy/weight ratio. They are costly due to the high price of silver...

 designed by Zinc Matrix Power. The chemistry consists mainly of zinc, silver, and water. The battery has been designed to be free of thermal runaway
Thermal runaway
Thermal runaway refers to a situation where an increase in temperature changes the conditions in a way that causes a further increase in temperature, often leading to a destructive result...

, which has been the main downside for lithium-ion batteries. http://www.digitaldingus.com/news/2006/09/09292006zinc_matrix_power.php

Based in Camarillo
Camarillo, California
Camarillo is a city in Ventura County, California, United States. The population was 65,201 at the 2010 census, up from 57,084 at the 2000 census. The Ventura Freeway Camarillo is a city in Ventura County, California, United States. The population was 65,201 at the 2010 census, up from 57,084 at...

, California, USA, the company has focused on designing a safer alternative to lithium-ion batteries. http://news.com.com/Can+anything+tame+the+battery+flames/2100-11398_3-6105924.html
The company claims that the battery achieves 200 W·h/kg specific energy
Specific energy
Specific energy is defined as the energy per unit mass. Common metric units are J/kg. It is an intensive property. Contrast this with energy, which is an extensive property. There are two main types of specific energy: potential energy and specific kinetic energy. Others are the gray and sievert,...

 and energy density of 500 W·h/l. http://www.zmp.com/tech-all.html This would mean that for same sized batteries, a zinc matrix battery would store almost twice as much energy and weigh a little less than a Li-ion. In addition to this, the company claims it has "very low self discharge" and no memory effect
Memory effect
Memory effect, also known as battery effect, lazy battery effect or battery memory, is an alleged effect observed in nickel cadmium rechargeable batteries that causes them to hold less charge...

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