Energizer 635236 lithium 9v battery energizer 635236 p the energizer 635236 is a lithium 9v battery that is ideal for power hungry devices it will last up to 8 times longer than standard alkaline batteries and performs in extreme temperatures the energizer lithium will maximise your high tech gadgets performance and keep you going non stop p p the battery can be used in place of regular alkaline 9v whether you are professional musician looking for the best performance from your wireles