Battery Not Charging, Says "Check Battery"

Hey y'all,

I have the Black Macbook (purchased in 2008) and within the past month, I have been experiencing problems with the battery. I've noticed lately it becoming weak, not being able to last long without being plugged in.

However, now when I plug it into the charger, it shows 0%, and if I disconnect the charger, it automatically shuts off.

I checked the System Profiler, and the condition of the health shows "Check Battery".

What are my next steps from here? I don't want to purchase a new battery, in hopes to get a new Macbook later this summer.

Does my Macbook have much life, or should I go ahead and brace myself for a new one?

Please help!