Emmerich 2443fa4000r emergency lights battery 2 4v 4000mah emmerich 2443fa4000r p the emmerich 2443fa4000r is an emergency lights battery rated at 2 4v 4000mah this nickel metal hydride nimh battery pack is ideal for escape route lighting security and emergency lighting the battery has a series parallel configuration which provides maximum design flexibility and is both universal and suitable for use in most brands of emergency lighting p emmerich 2443fa4000r emergency lights batt