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How long did your original C-max battery last?

battery poll

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91 replies to this topic

Poll: How long did your original C-max battery last? (37 member(s) have cast votes)

How long in years did your original C-max 12 v battery last?

  1. 1 year (0 votes [0.00%])

    Percentage of vote: 0.00%

  2. 2 years (1 votes [2.70%])

    Percentage of vote: 2.70%

  3. 3 years (4 votes [10.81%])

    Percentage of vote: 10.81%

  4. 4 years (7 votes [18.92%])

    Percentage of vote: 18.92%

  5. 5 years (2 votes [5.41%])

    Percentage of vote: 5.41%

  6. Still using original 12 v battery (23 votes [62.16%])

    Percentage of vote: 62.16%

Vote Guests cannot vote

#81 ONLINE   Plus 3 Golfer

Plus 3 Golfer

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Posted 08 March 2018 - 03:20 PM

 

 
The DC to DC converter is located at top right center of ICE compartment. Also the orange tubing is right next to it, pics are from MADMAX in the process of being repaired after hitting deer at the end of 2013. :sad: Needless to say CMAX turned into MADMAX. :rant2:
 
Paul  

 

That's the inverter on top of ICE that converts HVB DC to 3 phase AC voltage when motors are using power and  3 phase AC to HVB DC when the electric motors are producing power.  The DC/DC converter is in the rear near the HVB.  It converts HVB DC to 12V DC.


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#82 OFFLINE   likeaw

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Posted 29 April 2018 - 11:51 AM

I have 2013 Cmax which I purchased in Feb 13. Looks like the 12v battery(Group 67R orginal) is going bad. Guess the HV pack is the only thing saving me if I drive on regular basis. I keep one of the Lithium jump starters in vehicle just in case.  Has anyone tried the 90/T5 battery that Sam's sells to use in their vehicle? Looks like it has the same size but bigger CCA and seems to be cheaper ($105.88 in my area) alternative. Looks like Interstate recommends on their web site. Let me know.


Edited by likeaw, 29 April 2018 - 12:04 PM.


#83 ONLINE   Plus 3 Golfer

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Posted 29 April 2018 - 06:06 PM

Isn't group 90 longer than the bxt67r?  The length of the 90/t5 is about 1 1/4 inches longer per Interstate and Motorcraft specs than the 67R.  See if there's an extra 1 1/4 in the battery compartment.  Even if it fits in the compartment, cables could be an issue.

 

67R BXT-67R 390 65 8.27 (210) 6.90 (175) 6.90 (175) 30 (13.6)

 

Interstate 90/t5

 

Length9 1/2
Width6 7/8
Height6 7/8

Edited by Plus 3 Golfer, 29 April 2018 - 11:06 PM.


#84 OFFLINE   likeaw

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Posted 30 April 2018 - 12:22 PM

 

Isn't group 90 longer than the bxt67r?  The length of the 90/t5 is about 1 1/4 inches longer per Interstate and Motorcraft specs than the 67R.  See if there's an extra 1 1/4 in the battery compartment.  Even if it fits in the compartment, cables could be an issue.

 

67R BXT-67R 390 65 8.27 (210) 6.90 (175) 6.90 (175) 30 (13.6)

 

Interstate 90/t5

 

Length9 1/2
Width6 7/8
Height6 7/8
 
Interstate site says length of 67R is: Length  9 1/8....Time to open and look I guess.

 

Edit: after looking at battery, dont think it will work as they give you no extra room.


Edited by likeaw, 30 April 2018 - 12:54 PM.

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#85 OFFLINE   jestevens

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Posted 01 May 2018 - 06:44 AM

Yes, I think you're pretty much tied into getting the Motorcraft battery, that's why I just let the dealer do it, with special discount from dealer at the time the battery from dealer was the same price as Amazon, plus I would have needed to go buy a few extra tools and then spend 30-45 minutes of my time in 32F weather outside.



#86 OFFLINE   ptjones

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Posted 03 May 2018 - 02:38 PM

I did it myself, connected jumper battery under the hood, then removed old 12v batt. and put new one in, really easy. :)

 

Battery1
battery2

 

Paul


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#87 OFFLINE   joe

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Posted 13 June 2018 - 05:30 PM

I have a 2013 C-Max.  I replaced the 12v battery after 4 years because batteries usually die at 5 years.  The new battery lasted just about a year.  This March, the battery kept draining to where I had to jump start several times.  I take it to the dealer - they replace the battery at no charge under warranty.  Several weeks ago (June 2018), battery dies again.  Dealer replaces battery under warranty.

 

Conclusion: 

1)  Either the batteries that Ford sells are hit and miss in quality or

2)  Ford suspects (or knows) something more serious is occurring but it's cheaper to replace batteries than to fix the problem.

Note:  We've had a lot of rain this year.  There is a reference about some component that might rust, causing a drain on the battery.  Certainly a possibility.

 

In either case, by carrying my little lithium charger, it's not that big of problem to jump start and as long as Ford continues to replace the battery every so often.

 

I can live with it until the new Ford Escape hybrid arrives.  Hopefully, it won't have the same problem.



#88 OFFLINE   homestead

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Posted 13 June 2018 - 05:57 PM

Just make sure your key fob has the metal emergency key in case you can't open the door to jump the battery.



#89 OFFLINE   joe

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Posted 14 June 2018 - 02:56 PM

Yes, I've even practiced using the key and positioning it into the key fob to give the key leverage for unlocking the door.

 

My point is, if one battery lasted 4 years, and 2 subsequent batteries failed, it is most likely the batteries that are defective - not the car.



#90 OFFLINE   pianewman

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Posted 07 January 2019 - 12:26 AM

2013 Cmax, purchased in Aug, 2016, with 41k miles. 12V battery wouldn't hold a charge, dealership replaced it under warranty.

 

Dec. 2018, 82k miles, 2nd battery failed. Replaced at Ford dealership. 4-year replacement warranty

 

I live in FW, and the selling dealership has told me that they have a chart that shows the average battery lifespan in the DFW region is 27-32 months. My Toyota dealership told me virtually the same thing. DFW heat isn't kind to auto batteries.



#91 OFFLINE   Hatchman

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Posted 07 January 2019 - 07:43 AM

Just replaced mine this month.   Was dropping to about 11.7 volts after two days of non-use.  Bought it Feb 2013, so after almost 6 years, was probably time for a new one.

 

I will say in 2014 I let the battery die.  Dead as a doornail.  I think I got out of it but left it "on" because the next day it was dead as hell.  It was so dead I couldn't even charge it through the "under the hood" terminals.  It kept trying to start up all systems while I was trying it, since the car was still in the "on" mode.  Still too dead to unlock the back hatch, so I had to crawl through the car and unhook the battery terminals and then charge the battery.  I figured after that drain the battery would be useless but managed to run it for another 5 years.  I do put it on trickle charge when out of town for more than a few days so I'm sure that helped.  

 

But to answer the question, 6 years. 


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#92 OFFLINE   fbov

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Posted 07 January 2019 - 11:31 PM

Mine went into service November 2012, and I'm still on the original battery. It did go dead once, when I failed to pull the radio fuse in time (once in 3 times). Still waiting for untoward behavior. 

Frank


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