First check the battery CCA? Most battery 600~800
Now, you need to know (R, V, I)
The V > 12.6
Internal resistance New < 3.0, ok < 6, bad > 12. need to be replaced > 20
CCA > 200. Most good bettery CCA > 600.
If you have all these info then I can tell you good or bad of the battery.
