For a set rate of power drain and the same battery chemistry, the biggest battery will last the longest. In this case, the 'C' size.
car battery
Oreck Vacuums are rated the longest as the lasting battery in a vacuum.
currently I'm using macbook white 2010 the battery lasts upto 6hrs...
Duracell and Energizer. wat type of battery is thiscar battery 068113144107
Dell's lithium Ion batteries are some of the longest lasting on the market.
Energizer lasts the longest. It's beats Duracell by about 2 or 3 hours. I just did a science fair project on this, but I used D sized batteries. Still, Energizer is the best to use.
Panasonic lasts the longest.. it worked really long. it lasted 5 hours and the energizer battery only lasted 3 hours.. we did an experiment checking which battery lasted the longest by taking pictures on a camera until the battery died.
Sony's L Series Infolithium battery lasts much longer then the competition.
A Duracell, because they are more adaptive to all devices requiring batteries.
A full charged rechargeable DS Lites battery lithium-ion battery with a capacity of 850 mA and a 6' extension cable lasts for 10 hours.
Crayola lasts the longest out of rose art, pip squeak, and Crayola.