Duracell D Batteries

If you're buying a powerful toy, chances are it will require an extra-large and powerful energy source. We believe Duracell's "CopperTop" line of alkaline batteries offer the most power for the price of any consumer battery. Containing Zinc and Manganese-Oxide electrodes for higher performance, Duracell outlasted all other batteries in our durability test - which consisted of inserting different brand batteries in the same toy and letting it go until it stopped. Duracell batteries beat the brand that came in second by 15% and got our vote for best quality battery.

From Duracell:

Duracell batteries are the industry leader in high-quality, long lasting personal batteries. Ideal for use in toys, clocks and radios, remote controls, electronic games, smoke alarms, PDA's and flashlights, the CopperTop battery are new and improved to meet the growing needs of consumers. The CopperTop's performance has been upgraded to provide advanced performance in the devices consumers use most.