Extreme Performance Alkaline Batteries Designed to maximize the performance of all types of handheld/headlamp devices, COAST Extreme Performance (EP) AAA and AA batteries deliver top-rated power and outperform the competition—whether you’re on the worksite, at home, or on the go. Remove the stress from critical situations and simplify routine, practical situations by choosing batteries that take performance to the next level. Industrial Performance Designed to maximize the performance of all types of area light devices, COAST Industrial Performance (IP) batteries deliver top-rated power and outperform the competition—whether you’re on the worksite, at home, or on the go. Remove the stress from critical situations and simplify routine, practical situations by choosing batteries that take performance to the next level.