Emmerich 36c2500r emergency lights 3 6v 2500mah emmerich 36c2500r p the emmerich 36c2500r is an emergency lights battery with a 3x side by side battery configuration and is rated at 3 6v 2500mah this nickel cadmium nicd battery is ideal for use in emergency light fittings the battery is universal and suitable for use in most brands of emergency lighting p emmerich 36c2500r emergency lights battery 3 6v 2500mah