Have you replaced your battery?

[Desert viper_imp]

I'm coming up on about 2.5 years on my battery and this thread is making me wonder if it's going to die soon. For what it's worth I never planned to, but my CB ended up sitting from November until yesterday outside under a cover without being ridden once and without any treatment for the fuel. Yesterday I got it out and it started instantly twice as if it had been ridden yesterday. This makes me think the battery is still fine? Those of you who had to replace yours, how much warning did you have? I have AAA but not looking to get stranded anywhere but also don't want to spend the money replacing it if it's not really needed.

Well I had no warning whatsoever.....fired instantly like usual, rode 25 miles to a BMW dealer, came out an hour later and it barely cranked. Bump started it and rode it straight home...