For energy-hungry devices, this 24 pack of high-performance Lighthouse Alkaline Batteries AA-LR6 delivers high capacity and a longer storage life of up to 5 years. All because of their alkaline nature, which not only boasts a lower risk of leaking, but is known to last longer when used with higher current devices and can, in some cases, even outperform zinc-carbon alternatives by up to 6 times! Also mercury and cadmium free.