Sometimes, usually a few times a week, my 1995 Ford Explorer will not start. When I try to crank it up, it just clicks like the battery is dead. The lights, radio, etc. will be on but the battery display will show it only being about 1/4 of the way charged. If I try to crank 1 or 2 more times, it will just completely die and nothing will come on. I'll let it sit and go back out and it will either start right up, or for some reason the alarm would have set itself now and the car will still not start. Other times it will run just fine and have no problems starting all day. It's been doing this for about 3 weeks now and I have not jumped it once so I know the batter is not dieing. Any help would be appreciated.

The grease is a corrosion preventive, not a repair. Replacement battery connectors are generally not very reliable unless they are the crimp-on type like the originals. When you installed the replacements, did the copper wire look clean or was it white or green looking? Sometimes battery acid will work down into the wire insulation and destroy the wire inside. When the car won't start, get a helper to run the key and measure the voltage between the engine metal and the starter solenoid with a voltmeter. Attempt to start the engine while reading the voltage. If the voltage disappears, either of the two battery cables could be bad. Measure between the positive battery terminal and the starter solenoid--if 12 volts appears during start, that cable is bad. The same applies with the negative cable--negative terminal to engine metal. I hope this isn't too confusing and helps. The grease is a corrosion preventive, not a repair. Replacement battery connectors are generally not very reliable unless they are the crimp-on type like the originals. When you installed the replacements, did the copper wire look clean or was it white or green looking? Sometimes battery acid will work down into the wire insulation and destroy the wire inside. When the car won't start, get a helper to run the key and measure the voltage between the engine metal and the starter solenoid with a voltmeter. Attempt to start the engine while reading the voltage. If the voltage disappears, either of the two battery cables could be bad. Measure between the positive battery terminal and the starter solenoid--if 12 volts appears during start, that cable is bad. The same applies with the negative cable--negative terminal to engine metal. I hope this isn't too confusing and helps.