Some time back there was a thread on the battery (under the hood not for key fob) for the GK. I cannot find it.

Back when I got the car (2015 EX 6 speed manual) I ran the battery down because I wasn't used to the push button start/stop. I called the Honda Roadside Assist and they responded immediately with one of those hand dandy charge boosts. That was May/June 2015.

Yesterday, no start, no indication of any charge. Called Roadside Assist again, polite immediate response. The assistant remarked on the small size of the battery. I told him that I could not think I had done anything stupid again and he suggested that it might be the sudden, rapid temperature change. We just ended almost 100 days of over 90 degree highs/ 70 degree lows with high humidity. Suddenly it was 78/55 and dry. Drained the battery?

We talked about 5 minutes with the engine running and then stupid struck again. I went to "drive around the neighborhood" and immediately stalled the damn thing. Too late to call the gentleman back.

After lunch today, I called Roadside Assist again, got a different set of people who were even more polite and more prompt. New guy here within 15 minutes. Car started after the magic booster and after the new guy moved this Nissan box, I drove over 30 miles roundtrip, taking my time, about an hour. Car starts fine now but infotainment center told me that I need to reset the GPS system ... strange, since the car doesn't have one. Eventually I revived the infotainment system using the BG squared system.

After all that blah blah above. it there a slightly more powerful battery that will fit under the hood without modification? Fall was late in arriving but if the battery is prone to discharging with a 20 degree drop, what happens when winter gets to Middle Tennessee and temps are in the 20-0 degree range?

 

Try this link for upgraded battery .

https://www.fitfreak.net/forums/3rd-...options-2.html

James

 

The first time you ran the battery down, you should have put it on a real battery charger. Even then, it may have been ruined. Auto batteries are not "deep cycle" batteries, and don't like being run flat. Also, just "driving around" won't charge a discharged battery. The car's alternator is intended to maintain a battery at full charge while driving, not charge a dead battery. It sounds to me like your battery was damaged the first time you ran it down and it's never recovered.


I ran the original (tiny) battery in my '09 Fit through six upstate New York winters without a hitch. I expect no less from the battery in the '15.

 

There was a battery recall for early 2015 Fits. You should see if you qualify.

I saw it on this video:

 

On the positive side?
With my 2010 Honda, I side-stepped on more than one occasion the "Good Samaritan" role of providing a jump to a stranded motorist by simply showing them the mini-mouse battery of The Honda Fit.

Even the stranded motorist said "Nah...better not".

So there are some arguable advantages to having a car battery that looks like it could barely power a desk lamp.

 

And the "ruination" took 16 months (including a cold winter) to show up?

Follow up: After the second boost, thanks to Honda Roadside Assist, I drove the care over 60 miles and an hour (no hurry), this afternoon (under 60 degrees) and all seems to be right. Infotainment system up and running per MY standards.

 

I think you may be misunderstanding how electrical systems work. The system is designed to energize the system and maintain approximately 14.2 volts while running. This is with or without any electrical system loads. If you start a car with a discharged battery it will charge the battery using the alternator. Honda generally equips vehilces with alternators with around 80 amps capacity. With a running car requiring 15-20 amps this leaves plenty of capacity to charge a battery.

How fast will it charge? Depends on the battery. But to say that a car is not able to charge a dead battery is silly.

 

I'll come back in a week or so to give a repost and then on occasion as required.