Duracell CopperTop all-purpose alkaline batteries are not only dependable, they’re also long-lasting. They’re great for many of the devices you use on a daily basis in your home. You can take comfort in Duralock Power Preserve Technology that gives you a 10-year guarantee in storage. And because Duracell is the #1 trusted brand* of first responders, parents and outdoor enthusiasts, you know it’s a battery you can trust.

*2015 Duracell Claim Study

What is an alkaline battery?
Duracell pioneered the Alkaline Manganese Dioxide electrochemical system nearly 40 years ago. In the 1960s, this battery system rapidly became the popular choice of designers in the ever-widening field of consumer electronics. Alkaline or Alkaline Manganese Dioxide cells have many advantages over zinc-carbon cells, including up to ten times the ampere-hour capacity at high and continuous drain conditions. Also, their performance at low temperatures is superior to that of other conventional aqueous electrolyte primary cells. Other significant advantages are longer shelf life, better leakage resistance, and superior low-temperature performance. Their more effective, secure seal provides excellent resistance to leakage and corrosion. Today, Duracell manufactures two alkaline batteries: Quantum and CopperTop.How do I install batteries?
Carefully follow the instructions on your equipment regarding proper insertion of batteries, ensuring that the (+) and (-) terminals are aligned correctly. Some equipment using three or more batteries might appear to work properly even if one battery is inserted incorrectly. Such usage could lead to battery leakage or rupture that could result in equipment damage.Do all batteries last the same amount of time?
No, different batteries provide different lengths of life and power output, depending on the type and amount of chemicals used to compose them. Think of it like cooking a meal: Using different ingredients and amounts makes the meal taste different.What is inside a battery?
Batteries might be small, but they’re far from simple. They’re highly engineered electrochemical cells. Chemical energy is converted to electrical energy by means of redox reaction. This process takes place between the three major parts of a battery: the anode, cathode, and electrolyte. Different types of batteries use different materials for these parts. The materials for these parts are chosen depending on how well they give up or attract electrons, something that must happen for an electric current to be generated. The anode is often a metal; the cathode, a metallic oxide; and the electrolyte, a salt solution that facilitates the ion flow.How do I prevent battery leakage?
Do not mix old and new batteries, different battery types, or different brands within a device. Doing so will reduce overall performance and could cause battery leakage or rupture. Always replace all batteries within a device simultaneously. Remove batteries from a device when it is not expected to be in use for several months. Remove worn-out batteries from equipment immediately to prevent possible damage from battery leakage.