Yes, although resistance heat in the passenger compartment takes a lot of juice, apparently the resistance heating of a battery pack (Tesla’s first option) did not interfere with charging as much as a heat pump
This is an interesting topic. Tesla recently put a heat pump on some of their cars and Bjorn Nyland , a well known EV tester, has just noted that the older Model 3 without the heat pump heating, experienced LESS “cold-gate” effect (extremely slow cold charging) than the latest Model 3 with the heat pump. Apparently the newer Model 3 alternately shuts down the charging activity to warm up the battery with the Heat Pump, i.e. Taking turns charging and warming. The measured effect of this was extremely low charging rates in about 10 degrees C conditions.
I agree with kiteboarder, Aptera has the range as well as range options. I would like to know more about Aptera's battery thermal management of both heating and cooling mainly for battery longevity. I don't want to be stuck with a problem like many early Nissan Leaf's owners. Nissan isn't too supportive about many of the batteries which are reaching premature SOC issues.
@dtmattijetz Out of coincidence, this just was just came out yesterday. It discusses the poor passive air cooling of the Leaf battery pack and what happens under moderate use. So unless the active liquid cooled Aptera has the capacity to really cool the battery pack, we might experience something similar.
@OceanDragon Thanks, that was very interesting. I wonder what the cost was for them to replace just one part of the pack vs. the entire pack. The whole pack is supposed to be about $5,500, but that probably doesn't include labor.
If I was in that position, I would weigh the alternatives. I am pointed more in the direction of replacing only the faulty module(s). I would have the option of using new or used batteries. I would certainly go with a good used battery module. I would not mix new batteries with older functional batteries. Unless the car was exceptional, or had sentimental value, I would not get a new battery replacement either through Nissan or a replacement battery vendor.
Yes, although resistance heat in the passenger compartment takes a lot of juice, apparently the resistance heating of a battery pack (Tesla’s first option) did not interfere with charging as much as a heat pump
This is an interesting topic. Tesla recently put a heat pump on some of their cars and Bjorn Nyland , a well known EV tester, has just noted that the older Model 3 without the heat pump heating, experienced LESS “cold-gate” effect (extremely slow cold charging) than the latest Model 3 with the heat pump. Apparently the newer Model 3 alternately shuts down the charging activity to warm up the battery with the Heat Pump, i.e. Taking turns charging and warming. The measured effect of this was extremely low charging rates in about 10 degrees C conditions.
So the just put an electric heater in they battery.
Even a 1st-gen Leaf battery would last longer in an Aptera, since:
- It will be either liquid-cooled or convection-cooled (Leaf is UN-cooled, in a heat-trapping case).
- It will have shallower depth of discharge, since it uses 60% less kWh per mile.
- It will have lower current flow, since it takes 60% less current to drive.
- It will have less regen current, since it's about 30% lighter, requiring less braking energy.
I agree with kiteboarder, Aptera has the range as well as range options. I would like to know more about Aptera's battery thermal management of both heating and cooling mainly for battery longevity. I don't want to be stuck with a problem like many early Nissan Leaf's owners. Nissan isn't too supportive about many of the batteries which are reaching premature SOC issues.
... & Aptera doesn't need any "more range" than it already has...
Sounds to good to be true...