A2mike

leasadie, The battery I linked was for 1/4 of the modules needed for $300. All 4 would be $1200

Replacement Energi battery for $1200 https://batteryhookup.com/products/ford-c-max-21-cell-26ah-module-car-audio-special-2kwh They show them as 26AH which equates to 8kWh

Does anyone have the part number/numbers that are needed to do the upgrade?

I would guess they used the Way Back Machine. https://web.archive.org/web/20191130004110/http://fordcmaxenergiforum.com/ Looks to be the last archive of the site.

So the energy from the regenerative braking does not add to the kwh used? Any trek I take would have many stops and it will show the number of miles from braking so I am curious how that factors into the kwh used. Does the computer know how much it put in from braking and then subtract it from the total kwh used that it shows when the car is turned off? Would the best test be to simply drive with no stops until the engine kicked in? Thanks. Mike.

I got the car at this time last year when it showed 16mi of EV range. It has gone up since then. I value charge from 5:00 a.m. so when I leave at 7:30, the battery probably has some heat in it. I also pre-warm the car from 240v so I never use the heat from the battery, only the ICE. I did see the EV range increase plateau for a while from Dec. through Feb. and then continue to increase to where it is today. My question remains on how to measure the amount of power pulled from the battery. I am currently at 55k miles and would like to compare. Thanks.

How do you measure that? I know simply driving and then reading the display in the car will also include some regen. My 2016 has gone up from showing 16-17 EV miles to up to 24-25 now. Could that be the way I drive or maybe the previous owner never plugged it in so the computer was estimating?

I just looked at a 2013 C-Max Energi today and it was making the noise while not moving but in park and neutral. It actually goes away when put into "gear" Is there a different issue that makes the same noises? It was at an auction place so I could not move it more than a few feet. Has 106k miles. Noise definitely coming from trans.