From DailyTech:

Rechargeable batteries are used in so many different products that we use today – everything from our computers and mobile phones to our cars have batteries inside. One of the major areas of research is in new battery technologies that will increase the run time of electrical devices and make safer batteries.

Lithium-ion rechargeable batteries have been on the market for a long time and are prone to problems. The batteries, for instance, were the cause of massive recall several years ago after they were overheating in notebooks which in turn caused fires. One of the more promising new battery technologies being researched are zinc-air batteries.

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