Allow me to start by saying, I'm someone who has fought this fight and is in the 0.01% club for really knowing the technology, Solar Dave knows who I am if you doubt I know my stuff ...
Originally Posted by Dan & Nan
Battery age for all sorts of reasons, IMHO the primary leaf issue is the car doesn't protect the battery from the user, temperature is a secondary concern.. For example, Fast charge DC, charging repeatedly to 100%, even driving style with fast acceleration retaliative to the amp-hour rating of the battery will substantially short life.
I read the main thread a few weeks ago, not once did I see any hard data or someone using lab equipment to do a full discharge to deterministically test just a battery pack to measure capacity, the only thing I saw was what appeared to be measuring battery voltage and not one of them seem to understand the voltage will vary based on temperature what this fully means.
Just like the Volts range varies with temperature, so will the leaf. It hot, the AC will run, its cool, the heater will run an kill the mileage. Since the Leaf battery is subjected to a wider temperature range, that pack itself will have very wide swings in range, just because today in Phoenix when its 115 it has a lower range, doesn't mean next fall it will not regain range, not all but a significant percentage. Those in renewable energy have worked with large battery banks for decades, none of this is new information.
Having said this, I believe the leaf is a disaster and its going to bankrupt Nissan. They have no protections from owners killing there cars and then regardless of the cause. As time marches on, its clear that GM thought through all of this and that's why we have 16kw battery's, thermally protected, that the uses has a limited charger/discharge profile of 10kw maximum.
2012 Crystal Red Volt #10921 - Plug Powered #76