When you consider mobile phone batteries you can say that battery is the lifeblood of your mobile phone. With a flat battery, it is of little use, and one of the biggest frustrations of mobile phone battery use is battery life. The designers of cellular phones try hard to minimize the power they use, which gives longer service from smaller, lighter batteries, but although the power used on standby drops through clever design, the power needed for the transmitter does not. This means that a phone with a week or more of standby time may still only handle an hour or two of calls before its battery are flat.

Some handsets can take primary non-rechargeable batteries. This can be useful in an emergency, but if you do it frequently, the battery costs will be huge. Some mobile sets nearly manage to take ordinary batteries. For example, the Motorola c520 works with 4 AA batteries, but the standard battery cover won‘t fit back on: at a pinch, use an elastic band.

The various battery types listed on the site have the following features and typical applications. Alkaline has Long-life batteries giving up to six times the life of ordinary zinc carbon batteries. It is ideal for appliances demanding a high current drain when being used on an intermittent or continuous basis. Zinc Chloride is designed to give significantly longer life than conventional zinc carbon batteries at around half the cost of the long-life alkaline batteries. It is ideal for appliances demanding heavy or continuous use that require low to medium power.

Nickel Metal Hydride batteries claim to be superior to NiCd not only because they don‘t contain cadmium. They also are less prone to the "memory effect" problem and a discharge every week or two is ample, unlike NiCd, which need to be run down every other charge to retain their capacity.