Modern lithium technology provides up to 35% longer battery life than conventional Energizer photo batteries. Their resistance to extreme temperatures and their low weight make them the only choice for any professional photographer. Recommended for digital cameras, 35mm, APS cameras and flash units. Available in all currently popular sizes. 35% longer lifespan than previous Energizer photo batteries Can also be used in extreme temperatures (-40 ° - + 60 ° Celsius) Up to 10 years shelf life