Vintage Simmons Drums (UK) Users Group

Hi, all:

My Simmons Portakit recently started to lose its settings memory, so I thought that maybe an internal battery was going bad. Sure enough, there was some minor corrosion going on around the battery. The question is, does anyone here know of a suitable replacement for this battery? A web search doesn't turn up much information. The battery has a white plastic cap on it, with the words "Emmerich" and NC-M110, which are presumably the manufacturer and battery part number.

Thanks,
Jim Stewart