Batteries you know are worth buying for your electronic devices are the ones that last the most. You want to power your portable electronic device with batteries that will not damage your device or the environment when you dispose them. The Energizer Max AAA BP-2 will allow you to use your devices for several years. If you want the smoke detector to alert you, an alarm clock to wake you up, or motorized toys to keep your children happy, you can rely on these batteries. Even if you do not use your device for five years or more, you can still depend on these batteries to turn it on.