How can I know when the battery is almost death, the symptoms, I don't have a battery tester, so...

 

What leads you to think you have a battery problem? You can tell us the whole story, nobody here will laugh at you. Lot's of parts stores will test the battery for free hoping to sell you a new one. If the engine is turning over slowly on startup and the battery connections are clean and tight, You might need a new battery. Typical battery life is around 3-4 years.

 

ya being here in florida a good battery will last about 3 yrs cheap ones 2 if your lucky