The Varta lithium cylindrical LR1 N battery is a professional lithium round cell with long-lasting, supreme performance Designed to withstand extreme temperatures while delivering a quick and reliable energy supply Perfectly suitable for today's modern life and for use in Smart Home & Smart Security devices, it is ideal for cameras, photo flashes, and flashlights Other names: N, LR1, MN9100, AM5, 4001, 910A, E90, UM5 UM-5, A23, LR1MN9100