Ok, the alternators are very good on that year Accord, its in the mileage ballpark where it can fail. Almost evertime one fails you will have a charging system warning light on though. Also, normally the car will run out of electrical power while driving, say a night when the heater, lights , ect are on.

I would have the battery tested for sure. There is a way to test for a draw on the system too. Do you have a multimeter?

There are no lights to tell you if the battery is bad. The battery light on the dash will come on to indicate if the charging system is not charging.

If the battery hasnt been tested, do that first. The car cannot go dead while its parked with everything off because of an alternator thats bad.

If the battery is strong , have someone do a parasitic draw check, to see if anything is stuck on. I suspect a weak battery is the cause however

I hate to replace anything without testing it first, but if I had to I would get a battery.

Again, its very unusual to have a bad Honda alternator and NOT have the battery light on when the engine is running. Even the best batteries go bad.

It can be worth having the electrical system tested completely before replacing anything.

There are shops , including Honda dealers who will do it for a minimal cost.

Ok, good. I see many of these alternators last 150-200 thousand miles.

Good luck, John

We you had stated that you disconnected it, so I dont think so.

Like I said, if they hook up an amp meter they can measure the draw with everything shut off. There is a specific amount that is acceptable, anything over that can run the batter dead, even a good one in a day or two. Its like leaving an interior light on for 2 days.

If that were true, when you were driving somewhere at night with the lights on, heater on, radio on, ect it would be like you left all of those things on when the engine wasnt running. The battery would be dead in an hour.

Right, I understand. If the alternator was not putting out any amps, the battery would go dead either while you were still driving it, or it would not start the same day. Even if you shut it off and went in to the store and tried to start it after 20 minutes.

The fact that it starts the same day or even the next day means its got to be putting out amps. When the car is idle for a longer time ,the battery is either weak and its loosing charge on its own or there is an unwanted electrical draw.

Have a great weekend.

Regards, John

It shows 30 here. its good. THANK YOU!!!

Good night,