After the Warranty What Will the C-Max Battery Cost to Replace?

2013 Ford C-Max Energi

2013 Ford C-Max Energi – The high-voltage battery is in the rear beneath the cargo area.

If you’re considering buying a C-Max, you might be concerned about the cost of replacing the lithium ion battery when it fails.  A recent article in Autobloggreen said it wasn’t “all that expensive.”  The C-Max warranty is 8 years and 100,000 miles for the hybrid components, which includes the lithium ion battery.  In California, Arizona, Connecticut, Maine, Maryland, Massachusetts, New Jersey, Oregon, Pennsylvania, Rhode Island, Vermont and Washington the hybrid components (which includes the battery) are covered for a longer 10 years and 150,000 miles warranty (if your state passes the California emissions warranty, your warranty should be extended too).  Although the warranty isn’t for 10-years and 150,000 miles in most states, Ford does state that the battery will last more than 10-years and 150,000 miles.  Ford’s Chief Electrified Powertrain Engineer Mazen Hammoud stated in a recent Twitter question and answer that, “The battery is designed to last for the life of the vehicle.”

According to, hybrid battery packs are designed to last the life of the vehicle (about 15 years).  What if your battery doesn’t last?  The C-Max lithium ion battery for the 2013 Hybrid is listed on the official Ford parts web site.  The price is $3,510.38, part number 10B759.  This is a 1.4 kWh battery.  The battery for the C-Max Energi is the same part number and costs $8,546.87.  It is a 7.6 kWh battery.  Two factors may drop the cost to you.  First, you will need to drive the C-Max for more than 100,000 miles or 8 years, whichever is less before you bear the cost of replacement.  Once this warranty time period has passed, the cost of batteries should have dropped.  Second, Toyota gives Prius owners a “core credit” when they replace their batteries.  Toyota is currently charging $3,649 for a first- or second-generation battery, but the core credit is $1350 bringing the cost to $2,299.  Perhaps Ford will also give owners a core credit.  There is also a substantial labor cost for replacing the battery.  Last July, GreenCarReports described the experience of a Prius owner.  The total replacement cost with service was $4,400.  The owner walked out in shock at the price.  Later, the owner asked the service department for a better quote.  This time the total was $2,931.

According to Autobloggreen, “Consumer Reports has been impressed with the reliability of hybrid batteries and performance of the cars overall.”  Hopefully, C-Max owners are impressed with the reliability in 2020, eight years from now too.

This blog was published on 4 Dec 2012, updated on 13 Dec 2012 and revised and republished on September 28, 2013.


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38 thoughts on “After the Warranty What Will the C-Max Battery Cost to Replace?

  1. If you had an eight year old car with a failed transmission you would probably replace it with one from a salvage yard not a new one. Used batteries with varying milage at varying prices will be available much cheaper than todays estimated price new and cheaper even than the lower new prices expected eight years from now. Predicting a battery replacement eight years from now at todays estimated price new price makes little sense. Replacement can be done wirh a salvaged battery more cheaply by a non dealer service location. Battery replacements in hybrids are infrequent.

    • You’re right, many people would go to a salvage yard to get their replacement battery. I had an experienced salesman at a Toyota dealership bring up the battery replacement issue for the Prius. I think prospective buyers must bring this up frequently when they consider a hybrid. I was attempting to answer the question based on current data. I’ve bought four new GM vehicles with an automatic transmission in my lifetime. The transmissions in all of these died between 65,000 and 80,000 miles. It was a big expense to replace. This experience is most likely much worse than concern over replacing a hybrid/EV battery. Based on current information, I don’t believe battery replacement after the warranty should be a significant concern. However, I wish I lived in a state with the 150,000-mile 10-year warranty.

  2. I was a factory rep for Ford for several years. I promise they wouldn’t put a 8/100 warranty on a part this expensive unless they were very sure that the failure rate within the warranty period would be very low. Also, Lithium Ion tech is highly advanced and proven. I am totally comfortable with the battery portion of the car.

    • I think you’re right. They probably don’t expect many failures within 10 years/150,000 miles since many states require a longer warranty.

  3. The following is from the C-Max warranty:

    “Note: Lithium-Ion Battery Gradual Capacity Loss
    The Lithium-ion battery (EV battery) will experience gradual
    capacity loss with time and use (similar to all lithium-ion batteries),
    which is considered normal wear and tear. Loss of battery capacity
    due to or resulting from gradual capacity loss is NOT covered under
    the New Vehicle Limited Warranty. See your Owner’s Manual for
    important tips on how to maximize the life and capacity of the
    Lithium-ion battery.”

      • I have had my Energi for 2 yrs and 4 months with 105,000+ miles. The charge now only gives me 15 to 16 miles. I am hoping that the next battery I buy will give me 50 miles. That would make this car fantastic.

    • It would be interesting. However battery life isn’t the only problem. The trade-in value for plug-in vehicles isn’t going to be attractive. Tax credits, changing battery technology, the significant technology included in the vehicle in addition to the battery life left will result in poor trade-in values for plug-in vehicles. With attractive leases available, if you’re concerned about trade-in value, it may make more sense to lease (assuming you don’t already own a C-MAX).

  4. Just bought a new 2015 C-Max. It is a lot of fun and very challenging to drive in our ND climate. I found no place in the 500 page owner’s manual where they even give the size of the batteries. I am not sure even how many batteries are in the car, for example is their a third 12v automotive batter for starting the car? And if not a separate 12v starting battery, what happens when I have to jump start the motor? Anyway, I am totally in the dark on these batteries and how they interconnect. The Ford manual is mostly worthless and difficult to find useful information in and gives such nonsense warnings as do not use the C-Max as an ambulance.
    As for replacing the high power battery after it poops out in 10 or 15 years, you do not really need to, as the car could just continue to be driven as a bybid.

    • There are two batteries, one for the 12v system (conventional 12v battery) and a second for the high voltage system (lithium). The 12v battery is jumped with connectors under the hood but the battery is located at the back of the vehicle (at least with the C-Max Energi). If the 12v battery is dead, the car won’t start but I don’t believe there is a conventional starter motor. If the lithium battery is dead, you will not be able to use the vehicle as a hybrid. It is essential for the operation of the car.

      • My service guy told me I can drive it when the HV battery is dead. Who’s right? I find 22km limit after 40,000 km use (loss of 30% in one year) to be alarming. Wonder if Ford will think of that as “normal”?

        • If you really have a loss of 30% it is unacceptable. In the US, the warranty is 100,000 miles or 150,000 miles depending on the state. Note that what the car projects as the distance traveled with a full charge is not the same as the battery capacity. Also, I don’t know if the service guy is correct, but it is possible that the car can operate with a HV battery that holds little if any charge – I just don’t know.

  5. Actually, mine is a C-Max Energi, so apparently has 3 batteries, 12 v, 1..7kwh, and 7.5 kwh. But, how do they relate to each other? My understanding is the 12v is the usual motor driven, motor starting battery completely separate from the others. But, when you charge the 7..5 battery, does it also charge the 1.7 battery? It also appears that when I use up the charge for the 7.5 that the 1.7 is fully charged, and I can go several more miles on its excess charge before the motor kicks in.
    It would seem to me, that at the very least, when you charge the power batteries, a small trickle charge could also go to the 12v battery to keep it topped off as well.
    As for energy efficiency. At 11 cents a KWH for 9 KWH batteries it cost about 88 cents to charge. 9 kwh is about a quarter of a gallon of gas. At 40 mpg, that means the 9 kwh would only get you abut 10 miles, while the EPA is 19 miles. My driving gets about 14. Granted, electrical drive is more efficient then gas, but 4 x 0.88 = $3.52 a gallon equivalent. And I just filled up with $1.65 gasoline. There is also going to be some loss in the battery charging process.
    So, I have my doubts if I am really saving much, but still, it is a fun toy to drive and gives me the option of two types of fuel. Still, I wonder what the actual cost per mile really is?
    Roland of ND

    • There is not a 1.7 and 7.5 battery. There is just one battery. It does appear as two batteries with the software but there is only one battery. There isn’t a starter motor. For clarification, see this thread on the C-Max Energi Forum: The high voltage battery system does not charge the 12v system. It would be nice, but it doesn’t. The 12v battery must be charged for the car to start though. The C-Max Energi doesn’t have a 9kWh battery. Please see this blog for more information on electricity use and mileage: At 1.65 per gallon and 11 cents per kWh, there isn’t a significant advantage of electricity or gas for fuel. The car is fun to drive. Enjoy your C-Max.

  6. It would be interesting if the owners manual gave you more basic information on the battery and its operation. In fact, the owners manual is page after page of useless lawyer driven warnings to wear your seat belt or not to use the C-Max as an ambulance (?). Obviously driving an electric plug in is going to be an interesting challenge. As for costs per mile, I am sure gas prices will eventually swing up again, and I am discovering ways of charging up for little costs or even free. I feel I will also have to put some money down and buy a C-Max service manual that might give some more useful information.
    It would be interesting to learn more about how this technology actually works. For example, what is the voltage of the power battery? If there is just one high power battery for the C-Max Energi, what happened to the smaller battery the drives the plain hybid C-Max? And more basic, what is the basic care and feeding of the gas engine (ie. oil change interval, etc.) I notice also a complete absence of the usual warning lights (ex. low oil), or even a temperature gage for the engine? But a lot of redundant and glitzey screens which often duplicates the same basic information.
    It would also be nice if Ford or some individual put together a half hour informational video on the care and feeding of the C-Max, and how to get the most bang for the dollar.
    Roland ND

    • The lithium battery in the hybrid is not in the Energi. There are several differences between the hybrid and Energi drive train. The oil change is every 10-20K miles.

      You raise some good questions. I don’t have definitive answers. You might want to join the forum.

      I agree, I wish Ford would provide more detail for those of us that want to dig deeper.

  7. Oh, does anyone have any information on the neat 110 volt plug in behind the front seats? Is there a circuit breaker someplace for this outlet? What battery does it operate off of? What is its maximum wattage useage?

  8. I bought my Energi Jan 7, 2013 which makes it 3 years old next month. I have 137,000 miles on car. The cost of gas is low enough now that charging is more expensive. The big thing I have noticed is the charge now only gives me 15 miles. I was charging the car at least once a day many times twice a day. Gives you an idea as to how long the large battery is going to last.

  9. Yes, the cost of electricity does seem to be more then gas at the moment. So, will we extend the life of the batteries if we do not charge them when the price of gas is low, or will they age regardless of how often we charge them? And in charging, is it better to totally drain the battery and recharge, or just do it anytime?
    I was pleased yesterday to find a free electric plug in for cars in Fargo. Of course, I have to be willing to relax in the car for 2 hours in order to receive the benefit of $1 worth of free electricity. As of today, I have decided to not plug in the battery during the rest of this winter. Just too much bother and no real savings.
    I have continued to go through the hundreds of pages of the owner manual, and finally found a section that explains one of the screens will apparently (if working properly) will warn when an oil change is due. I have not yet found if an earlier change should be done for break-in, or how I would reset the warning if I decide to change the oil myself.
    Roland of ND

    • From the manual (page 281 in some versions):
      Resetting the Oil Life Monitoring System
      Note: Reset the oil life monitoring only after an oil change.
      1. Turn the ignition key to the on position. Do not start the engine.
      For vehicles with push-button start, press and hold the start button for
      two seconds without pressing the brake pedal. Do not attempt to start
      the engine.
      2. Press both the accelerator and brake pedals at the same time.
      3. Keep both pedals fully pressed.
      4. After three seconds, the Service: Oil reset in prog. message will be
      5. After 25 seconds, the Service: Oil reset complete message will be
      6. Release both the accelerator and brake pedals.
      7. The Service: Oil reset complete message will no longer be
      8. Rotate the key to the off position.
      For vehicles with push-button start, press the start button to turn the
      vehicle off completely.

  10. I just charged my 2015 Energi off solar panels today. That feels SO good – complete independence from gas AND power grid.

  11. Craig, so how did you do it? Did you do a DC charge from the panels, and if so what was the DC voltage and what changes did you have to maker to the car to do it. Or did you just convert 12V DC from the panels to 110V AC and just plug in the car?

  12. I was reading some complaints on the NTSA site and one complaint stated that the CMax uses the Lithium battery both for drive and start. This is not correct. Both Cmax and Prius have 2 batteries, one of those a regular 12V to start the car. The Prius has a NiMH (Nickel Metal Hydride) and Cmax a more efficient and expensive Lithium Ion (Li) so the replacement costs of the batteries would be different

  13. I got my cmax energi close to 6 months ago and depending on temperature, percent discharged at charge, and varying traffic, I can get between 16-22 Miles of electric. I’d wonder just as much as with battery replacement if cars like mine would have charging tech upgradable as well.

    Just remember that warrenty only covers the battery in non wear and tear conditions. Also with 22 miles battery and a 15 amp charger your probably not using the battery 100% and even though it may not be a second lithium battery I’m using more of the “secondary” regen battery side when I get regular stop and start. There all individual cells if a recent leaf video disasembly on youtube I saw is how the ev standard is.

  14. Oh heck no I would not buy or own one of these electric cars that I might have to replace the expensive battery after a while. ?

  15. Have a 2014 C-Max Energi. Just hit 16,000 miles. No noticeable loss of range from new car, still 22-24 miles.
    New traction battery holds 7.5+/- thousand watts of electricity.

    A 15amp circuit in your house at 110 volts would supply about 1.65 thousand watts in an hour. The car battery would run that circuit for about 4.5 hours. That provides an idea of how much power your car takes, overall.

    The newer your car, the better your battery since the manufacturers have developed better quality control in the last few years. Newer design Li-Ion batteries will be available in a few years (say, 5) that will charge much faster (for the Energi, 1 hour instead of 6 at 110 volts or 30 minutes at 220 volts).

    If it went 50 miles on a charge, you wouldn’t have to go on the gas except on a long trip. I’d like to see that!! Also, how about an Escape Energi — I’d buy that!!

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