I have seen some web pages reporting the [2012] Leaf battery pack as weighing 200 kg (without controllers).
The Volt battery pack also appears to weigh in around 200 kg, but is 16 kWh instead of 24 kWh.
But GM make a song and dance out of the fact that the Volt only uses 65% of its actual capacity, to protect the Li cells.
OK, so if those battery packs were otherwise equal, then does that mean both have actual all-in capacities around the 12 kWh per 100 kg, but that the Leaf is using 100% of its real capacity?
I realise there is a lot more detail on the housings and other parts to the battery pack system, and this may not be comparing like-with-like (e.g., do these other figures include battery controllers or not??), but other EV battery packs seem to come in at lower specific capacities than the Leaf's apparent 12 kWh / 100kg all-in pack mass. Are these also running like the Volt (8 kWh / 100 kg), with larger overhead margins at the top and bottom of the SOC? e.g. BMW i3 is 230 kg for 22 kWh (9.5 kWh / 100 kg), and Renault Fluence at 22 kWh in 250 kg (8.8 kWh /100 kg)
The Volt battery pack also appears to weigh in around 200 kg, but is 16 kWh instead of 24 kWh.
But GM make a song and dance out of the fact that the Volt only uses 65% of its actual capacity, to protect the Li cells.
OK, so if those battery packs were otherwise equal, then does that mean both have actual all-in capacities around the 12 kWh per 100 kg, but that the Leaf is using 100% of its real capacity?
I realise there is a lot more detail on the housings and other parts to the battery pack system, and this may not be comparing like-with-like (e.g., do these other figures include battery controllers or not??), but other EV battery packs seem to come in at lower specific capacities than the Leaf's apparent 12 kWh / 100kg all-in pack mass. Are these also running like the Volt (8 kWh / 100 kg), with larger overhead margins at the top and bottom of the SOC? e.g. BMW i3 is 230 kg for 22 kWh (9.5 kWh / 100 kg), and Renault Fluence at 22 kWh in 250 kg (8.8 kWh /100 kg)