Lithium Ion batteries can get three times cheaper than current average prices of about $180 per kwh to about $50-60 per kwh.
This will be from improving processes going to the Tesla-Maxwell dry cell technology and with improved energy density and increasing the volume and other manufacturing efficiencies.
A Cleantechnica analysis of the Tesla Cybertruck seems to show an implied 45% improvement in battery prices to about $100-110 per kwh by 2021.
$94 per kwh is the pricing expected in 2024 by Bloomberg New Energy Finance analysis.
InsideEVs performed a cost analysis of the new Tesla Maxwell dry cell technology which estimated a 20% improvement in battery pricing. This analysis did not take into account the lighter cars and price improvements from higher energy density from the new Maxwell batteries. Maxwell batteries should have about 30% higher energy density initially at about 385 watts per kilogram and could get another 30% when they increase to 500 watts per kilogram.
This is more details in the Tesla battery domination scenario that Nextbigfuture wrote about in June 2019. This improvement in pricing will also enable electric cars and in particular Tesla electric cars to surpass ICE (internal combustion engine) cars in price and performance.
In 3 years, Tesla will also have the Fremont factory, Nevada factory, China factory and a European factory at fully ramped production. The production levels will be 4 to 6 times higher than today.
A Future of Cheap and Plentiful Batteries Means Electrical for Most of the Non-Electrified World
The World Economic Forum has an analysis that 850 million people could get electricity with batteries and mini-grids and other electrification projects.