Google seems to have a massive inability to deliver lithium ion battery information. It's nearly impossible to find recent articles I know about unless I bookmark them and skip Google entirely.
That said, I don't have the numbers whining battery price increases, but I would expect that when Lazard releases 2022 data in the coming weeks it will show an increase in cost over 2022. There is absolutely massive demand, and supple chain shortages for all sorts of parts on battery installs which is increasing costs.
And all the car manufacturers are about 3-5 years behind where they should be in securing their own production capacity, leading to massive shortages of batteries for cars. And since cars are a higher margin product than utility installs, the car market is going to get served before the utility scale storage market when it comes to allocating limited production capacity. (That said most utility storage is LFP, which is not usually the preferred chemistry for US cars where customers still want massive batteries).
There was a story about this three or four weeks ago.
There is a temporary shortage of lithium refining capacity, taking in lithium ore from the mines and producing lithium carbonate /lithium oxide in the purity required for battery manufacturing.
That drove up the price of refined lithium carbonate and therefore finished lithium cells and battery packs.
Note the "temporary". It's fairly quick and easy to expand refining capacity, but it had been in oversupply for a long time, so people were caught napping.
There may soon (2 years?) be a shortage of lithium mining capacity, but miners are jumping on the bonanza, so I don't expect that to happen.
What's your source?
This was a surprising claim, so I tried googling, but none of my first 50 or so results were more recent than by 2020.