Hottest battery temp that I ever observed on my Kona..

I had battery up to 45°C. Sitting in a hot parking lot all day in Nevada sun. It cools down very fast when turning on the car to about 35°C in about 15-20 minutes.

 

Just checked Battery University on li-on high charging temps:
Battery type ....Charge temperature. .........Discharge temperature
Li-ion .............0°C to 45°C (32°F to 113°F) ....–20°C to 60°C (–4°F to 140°F)
Sounds like 45 is at the highest recommended for charging.

 

On a recent 895KM day trip to Kelowna and Kamloops, my last DC charge was in Kamloops. 32 C outside, charged 40 to 80% before hitting the Coquihalla on last leg home to Langley. Battery temp at 48 C going up the 'hill' at about 110 KMH. Stayed at a steady 48 C until grade levelled off some. Charge time was 41 minutes at PetroCan. Excellent trip. As a side mention... next time we'll pack lawn chairs so that we can wait in the shade during charging.

 

Ok, so how are you checking the battery temperature?

 

It seems the Kona was parked and I gather it's not programmed to turn on the AC in that situation.

 

Yes, in my case it is always parked. It sits in the parking lot while I'm at work. And it gets really hot here in Vegas. Interestingly module #4 usually gets the hottest with 45°C. The other 3 modules are usually 2-3 degrees cooler. I guess #4 is under the back seats (???) and maybe gets hotter because of the hot interior and less outside facing surface?

But as I mentioned, I usually turn on the AC remotely before I leave work and that starts the cool-down process since the car not only cools the inside of the car, but also the battery pack.

While driving I've never experienced that hot of a battery pack.

 

Using this one: https://evobd2.com

 

It definitely doesn't. Only if it's plugged in and charges. I'm not sure if it will start cooling if it's plugged in but not charging because it hit the set maximum charge level.