Sady,

I doubt that its the battery. Once a battery goes bad, it rarly revives.

If U can duplicate the problem, put a voltmeter probe on the output terminal of the solonoid. U should read 12 volts. This will tell U if the solonoid or the starter is the problem. Since the current from the pick coil in the solonoid goes thru the starter to make the solonoid pick (click), the problem is probably in the solonoid. If U get 12 volts at the input to the starter and the starter doesn't run, then starter is bad, but probably only the brushes or the comutator needs to be cleaned.

Also test the voltage at the input terminal to the solonoid. Test at the stud and the cable. Both should be the same, 12 volts. If there is a difference, the connection there is bad.

P E H