Batteries having high life span
The modern manufacturers are making the best effort to improve their battery life.For instance, Duracell has offered a sophisticated Ultra Power battery package for the consumers. Its unique Dura lock technology has made the product highly valuable to the consumers. You may invest on AAA or AA alkaline batteries of Duracell. The power preservation technology has made the batteries much advanced and highly reliable. While you are looking for the tested batteries in the market, you may invest on these Duracell products.
Why a battery has longer or shorter life span?
Battery life can vary for various reasons. You may have used Duracell batteries for two different devices. You may find a variation in the life span of batteries of those devices. Different devices drain the current at a varied rate. Digital cameras use a very high amount of power, while the watches and smoke detectors need low power. Thus, the batteries for watches or smoke detection tool will last for more years. Cell voltage is another factor that differentiates the batteries.
When you are buying alkaline batteries, you have to choose them from a reliable brand. You can use them to an optimum level.