The Philips LongLife AAA batteries are packed per 16 pieces. The batteries are free of harmful heavy metals such as cadmium, mercury and lead. The batteries retain at least 80% of their original energy for five years. The Philips AAA RO3 Micro 1.5 V LongLife alkaline batteries have a low self-discharge. This makes them very suitable for electrical devices that use little power over a longer period of time. Think of devices that you do not turn on often such as clocks, remote controls, wireless mice and keyboards, flashlights and radios. In contrast to Lithium batteries, these Alkaline AAA batteries also last longer because they hardly run out of power. Philips LongLife alkaline batteries have a good power retention. The batteries retain at least 80% of their original energy for five years. With a package that also contains 16 pieces, you always have working AAA batteries at hand.