tmatthias said:
I normally go about a week between L2 charges. However, the mornings are getting a bit nippy these days here in New England. What I would like to do is to plug-in my EVSE at night and have the Climate Control Timer activate WITHOUT charging.
I haven't been able to to turn off the charging function but have the EVSE supply the power for the Climate Control Timer. Is there a trick to doing this? I know that charging gets delayed if a Charge Timer is set, but I don't want to charge; I just want to power the Climate Control.
Any insights would be appreciated!
TIA,
Theo
The only time charging doesn't happen when powering climate from L2 is when the battery is fully charged. Otherwise, climate control will draw most of the L2 power - excess power goes to charging (assuming the climate timer has priority).
Set the charge timer to 80%, with climate priority. Set both the charge end and climate timers to a couple minutes past your regular departure time. When you unplug, the battery will be about 80% charged (will vary with weather), the cabin will be warm, and the battery will be slightly warmed up.
It sounds like you have a very short commute. If you don't want to charge (greater than 50% remaining), don't plug in. The climate timer still works (I think).
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A technical trick, if your L2 EVSE allows it (but not recommended). Estimate the power the climate control draws when running. Configure the L2 EVSE to limit power to the same power. L2 charging will be slower, but when the climate control starts, there would be little excess power (or even a small deficit) to go towards charging. If there is a deficit, the difference comes out of the battery.
Climate control power is not constant - it decreases once the cabin is warmed up, and warm-up depends on how cold it got.
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I'm curious why you wouldn't want to charge, even slightly. Do you have a long downhill drive just off your driveway and want to capture some of that regen energy?
