- Testing found Duracell batteries to last 2 to 3 times longer than Energizer
- Storage lifespan of 10 years
- Produces 1.5V of power
- Operates in extreme temperatures of -4 - 130 degrees Fahrenheit
- Weighs .4oz per battery
Duracell AAA Coppertop batteries outperform and have shown in testing that they will last 2 to 3 times longer than an Energizer battery. The batteries will maintain their power for up to 10 years in storage and operate in extreme temperatures of -4 to 130 degrees Fahrenheit. Consumer reports have found Duracell to be the victorious leader of batteries for you to trust with you every day and emergency needs.