Vach
Posts: 16
Joined: Tue May 07, 2013 10:24 pm

2012 Drivers battery experience

Tue May 07, 2013 10:36 pm

I am very interested in getting a ford focus electric, but I have a question I wanted to ask anyone who has had the car since it was released.

Have you experienced any loss in battery capacity? I'm not to worried, but I am interested in seeing what actual drivers have to say instead of dealerships an online reviews. minimal battery loss is expected but I am hoping it is nothing like the leaf.

Thanks for your time! =)

Vach
Posts: 16
Joined: Tue May 07, 2013 10:24 pm

Re: 2012 Drivers battery experience

Tue May 14, 2013 10:31 pm

Really? Nobody? Hmmm...

how about just general loss in capacity over your ownership of the car?

jmueller065
Posts: 2387
Joined: Tue Feb 12, 2013 4:36 am
Location: Southeastern MI
Contact: Website

Re: 2012 Drivers battery experience

Wed May 15, 2013 3:59 am

It is very possible that no one has had the car long enough to notice any loss of charge (From what I can see the longest ownership here is about a year or 12,000+ miles). Given that in a year the battery range loss may not be that large; a 5-10 mile overall range loss wouldn't be that noticeable. Hence no one has replied.

It is also quite possible that the FFE's thermal battery management has minimized any range loss for anyone to be even less making it even less noticeable....
2018 Cajun Red Chevy Bolt
2016 Magnetic C-Max Energi (lease returned)
2014 Sunset Escape
2014 Thor Axis (V-10)
2013 Focus Electric (lease returned Jan 2016 for the C-Max above)
https://spareelectrons.wordpress.com/

WindPowered
Posts: 80
Joined: Thu Mar 28, 2013 10:51 am

Re: 2012 Drivers battery experience

Wed May 15, 2013 4:09 am

jmueller065 wrote:It is very possible that no one has had the car long enough to notice any loss of charge....
This is most likely the case. Think about what the car is primarily designed for, i.e. a low mileage daily commuter. People aren't racking up hundreds of miles a day on these things, nor have they been around in quantity for any length of time. There's just over a 1000 of these cars "in the wild" and most of those have been in the last 6 months or so.

Low daily mileage * very few days * very few cars = very little to go on.

There just isn't enough data to be had out there right now to make any conclusions about this. Yet.


WP

Vach
Posts: 16
Joined: Tue May 07, 2013 10:24 pm

Re: 2012 Drivers battery experience

Wed May 15, 2013 4:11 am

I'm hoping it's the latter. At least, that's the best case scenario. (IE, very good TMS.)

DavidJohnson
Posts: 38
Joined: Tue Feb 26, 2013 5:24 pm

Re: 2012 Drivers battery experience

Wed May 15, 2013 6:22 am

I was reading an article the other day (by Mikael Cugnet) that described the simulation of mileage on the batteries. In order to simulate 100k miles of use in a short period of time, the manufacturers must quickly discharge and recharge the batteries. This can affect the battery capacity two ways, one is heat generated that is detrimental (anything over 104 deg F is bad for the battery) and the second is the extensive use of rapid recharging can be detrimental. Ford says that after simulating 100k miles, they still had over 90% of capacity left. Cugnet claims that in real life, he believes owners will see 15-20 years of use because most owners will not use the batteries the way the OEM test them. That's likely longer than the life of the vehicle. I believe that the general consensus is that a battery becomes 'non-useful' when its capacity falls below 80%. Just my two cent contribution to the discussion... :)

Vach
Posts: 16
Joined: Tue May 07, 2013 10:24 pm

Re: 2012 Drivers battery experience

Wed May 15, 2013 8:29 am

That was an awesome contribution. Thank you very much! I figured that's what kind of testing they did, I just wanted a real world experience from some people. But, as stated, that's probably not really possible yet.

you have a link to the article?

WindPowered
Posts: 80
Joined: Thu Mar 28, 2013 10:51 am

Re: 2012 Drivers battery experience

Wed May 15, 2013 8:52 am

Vach wrote: you have a link to the article?
I think he's referring to this analysis.


WP

JTCalif
Posts: 149
Joined: Thu Apr 11, 2013 10:42 pm

Re: 2012 Drivers battery experience

Thu May 16, 2013 10:29 pm

Thanks for that article by Jay Cole (quoting Cugnet).
My practice of leaving the car only partially charged overnight (between 1/4 and 3/4, usually), then fully charging it in the morning shortly before beginning to use it,
may be a good idea, from what Mr. Cugnet wrote.
It may extend the battery's good performance life somewhat, and costs me just a minute a day.
FFE built Jan 2015 (was FFE May 2012)

Vach
Posts: 16
Joined: Tue May 07, 2013 10:24 pm

Re: 2012 Drivers battery experience

Thu May 16, 2013 10:40 pm

But doesn't the system not charge the battery past 80% anyway?

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