EV-volumes has sent its subscribers a special Christmas battery report, and according to the sales data, a total of ~48,450 MWh worth of battery capacity has been installed in plug-in cars to date.

New high Density NMC Stack From Nissan's 60 kWh battery back ... that the company is totally not going to be debuting soon

EV-volumes breaks down the numbers even further, showing that four different lithium-ion chemistries haven taken the majority of the market:

NCA (high energy dense cells produced mainly by Panasonic for Tesla), NMC (various brands around the world), LFP (mostly Chinese plug-ins) and LMO (mostly Nissan & Mitsubishi).

Installed capacity by battery chemistry:

NCA - 14,810 MWh

NMC - 12,990 MWh

LFP - 9,528 MWh

LMO - 8,682 MWh

LTO - 745 MWh

Lead Acid - 243 MWh

LMP - 217 MWh

Installed capacity by battery supplier (source: EV-volumes)

And here is great comparison between suppliers (big props to Jose Pontes at EV-Volume for the effort):

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