jeffMachE
Well-Known Member
- First Name
- Jeff
- Joined
- Oct 27, 2020
- Threads
- 13
- Messages
- 242
- Reaction score
- 271
- Location
- Colorado
- Vehicles
- F-350, XC60, RR Prem Ex4 (rcvd 11/21)
To throw a bit more info (thanks OP for the post!) into this mix: On my i3, the energy required to heat up a 33 kWh battery pack to optimal temperature dwarfed the energy it took to heat up the cabin. Obviously the external temp impacts the energy consumption, but the ratio between the 2 seemed pretty consistent to me - roughly 3x the energy to heat up the pack vs. heat up the cabin. I also could NOT get any battery pack heating unless the departure time was set at least 3 hours into the future.
I assume that the Mach-e is similar - heating up the thermal mass of the battery pack to optimal temperature will take far more energy than heating up the cabin (mostly air). That being said, however, I have not seen the same energy consumption graph on my Mach-e that I would see on my i3. I've only observed the Mach-e drawing wall power in the 15 minutes before departure. With the i3, it would use the battery charge to heat the battery pack and then begin replenishing the battery charge over an hour before departure, with a spike coming in the last 15 minutes before departure. Maybe, as someone previous has indicated, the Mach-e only conditions the pack if the external temp is below some set point.
I assume that the Mach-e is similar - heating up the thermal mass of the battery pack to optimal temperature will take far more energy than heating up the cabin (mostly air). That being said, however, I have not seen the same energy consumption graph on my Mach-e that I would see on my i3. I've only observed the Mach-e drawing wall power in the 15 minutes before departure. With the i3, it would use the battery charge to heat the battery pack and then begin replenishing the battery charge over an hour before departure, with a spike coming in the last 15 minutes before departure. Maybe, as someone previous has indicated, the Mach-e only conditions the pack if the external temp is below some set point.
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