You can add water to the battery. But only use distilled water. Only distilled water. Do not add tap water. Do not add electrolytes. It is time to get a new battery. Check the voltage of the battery after fully charged and it should be above 12.2 volts. If, after replacing the battery, you still have dead battery issues, then it is time to replace the alternator. You can check this by checking the voltage on the battery when the car is off and making sure it is around 12.6. when the car is running, the alternator should be charging the battery and you should get a reading from the battery of about 13.5.
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You can add water to the battery. But only use distilled water. Only distilled water. Do not add tap water. Do not add electrolytes. It is time to get a new battery. Check the voltage of the battery after fully charged and it should be above 12.2 volts. If, after replacing the battery, you still have dead battery issues, then it is time to replace the alternator. You can check this by checking the voltage on the battery when the car is off and making sure it is around 12.6. when the car is running, the alternator should be charging the battery and you should get a reading from the battery of about 13.5.
Battery is ruined once dry