If you are going to store the car for 4 months then put a trickle charger on it and/or remove the battery as has been previously suggested. Complete discharge = death to any lead acid battery. Even deep cycle batteries are only resistant to this up to a point. This is the most important thing to know about lead acid batteries. Keep them charged up and they will last a long time. If you let it go to zero then it is a goner.

MP

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra