XTS2500 internal clock battery

[dxon2m]

I'm looking for a replacement for the internal clock battery..I see that it is labeled "MS621" but I have ran across ones with 3V and ones with 1.5V. So is the battery 3V and can I purchase them from regular stores?

[Squad5]

Sorry to revive an old thread. Where did you find this MS621 battery? I found some online, but they have the probes because they are rechargeable. Will these work or do I need one without the probes?

[RFguy]

The internal batteries are typically a rechargeable lithium cell. I see Digi-key has them for a couple of dollars.