Batteries should be replaced about every 3 to 5 years, some can even last seven. However, it is obvious that if the battery dies (with no ability to "jump"), is corroted, or gets a dead cell in it then it should be replaced.
If you question the condition of your vehicles battery, drive to your local auto parts store and they can test the battery and the charging system of the vehicle for you at no cost.
Check the battery cables or starter.
The life of a car battery really depends on many factors, in addition to time. Amount of use and climate are key factors in the life of a battery. One can expect to have to replace a battery generally every 3 or 4 years, however.
Yuor battery is leaking fluids or gases. The battery likely needs replaced.
If it has a dead cell the battery will not hold a charge and must be replaced.
Maybe the car needs gas.
A light is on or a relay is stuck pulling power from the battery.
Something else is broken.
Dead cell in the battery or something is on pulling power from the battery. If it is a dead cell the battery must be replaced.
You can take your car to any car dealerships, auto repair shop, or AutoZone and they will be able to test the strength of your battery. AutoZone will test your battery free of charge.
Sounds like your battery has a weak cell and needs to be replaced.
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