FM Towns CX40 Bios Battery replacement

[sir_beaker]

My FM Towns isn't saving any of my BIOS settings so I was looking to replace the batteries. There appears to be 2 in the holder. A CR2450 which is easy to replace but the other one has the following written on it:

NC468
(C14L-5910-0210)
071
FDK

Does anyone know anything about it and if this one also needs to be replaced, and where I could get one from or is there an alternative?

[caius]

You can use a common not rechargeable CR2032 in place of them but you have to prevent the rechargement by using a low leakage diode to block the current.

[famiac]

Maybe try looking here?
http://www.fdk.com/denchi-e/specialbattery/lineup.html

[sir_beaker]

Thanks for the replies, I managed to get some CR2450's with solder points on them which I'll have a go at installing soon.