There are two types of car batteries. One is maintenance free. The other type requires topping up with distilled water every now and then. If your car battery is of the former type, then there is nothing much you can do about. But the latter type can be recharged and there are several shops in Sinayia that do this job. Just look around. However, if your battery is over a 18 months old, you might as well think of replacing it with a new one.