Reviews, information and discussions about high tech gadgets.

In electronics, a battery or voltaic cell is a combination of one or more electrochemical Galvanic cells which store chemical energy that can be converted into electric potential energy, creating electricity. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications, and is now a multi-billion dollar industry.

Unlike a corded telephone, a cordless telephone needs mains electricity to power the base station. The cordless handset is powered by a rechargeable battery, which is charged when the handset sits in its cradle.

The advertised battery life on most models is different from the real-world achievable life. For example, the fifth generation 30 GB iPod is advertised as having up to 14 hours of music playback.

Digital cameras have high power requirements, and over time have become smaller, resulting in an ongoing need to develop a battery small enough to fit in the camera and yet able to power it for a reasonable length of time. Two broad types of batteries are in use for digital cameras.

A battery is a device that converts chemical energy directly to electrical energy.

A battery charger is a device used to put energy into a secondary cell or (rechargeable) battery by forcing an electric current through it.

Alkaline batteries and alkaline cells (a battery being a collection of multiple cells) are a type of disposable battery or rechargeable battery dependent upon the reaction between zinc and manganese (IV) oxide (Zn/MnO2).

phone chargers are not really chargers, only adapters that provide a power source for the charging circuitry which is almost always contained within the mobile phone.

Rechargeable batteries use electrochemical reactions that are electrically reversible.

Rechargeable batteries use electrochemical reactions that are electrically reversible.

Duracell manufactures alkaline batteries in many common sizes, such as AAA, AA, C, D, and 9V. Lesser used sizes such as AAAA (primarily for pagers, penlights, and blood glucose meters) and J size batteries (for hospital devices) are also manufactured along with a range of "button" batteries using Zinc-air chemistry, used in calculators, hearing aids, and other small (mostly medical related) devices. Duracell began selling Dane-Elec products such as flash memory in 2008

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