As stated this refers to an historic abuse, and not related to ESS or EV's but all the same interesting after we saw a similar cartel exposed in Europe last year for industrial batteries, including Exide and Hoppecke. 

With prices plummeting for Li-ion batteries for ESS and EV applications it's hard to see a cartel situation here, but I'm sure it would be tempting. The race to the bottom (pricing) we see presently is a dangerous game for all involved.