The following sources are cited in SAP Digital Futures Issue 30: Next-Gen Batteries Will Define Our Future

$480 million: venture investments in battery R&D in the first half of 2017.
Jonathan Sheiber, New battery technologies are getting a charge from venture investors, 
TechCrunch, Sept 7, 2017,

8 minutes: the amount of time to charge Toyota’s experimental solid state battery.
Yuki Kato, Satoshi Hori, Toshiya Saito, Kota Suzuki, Masaaki Hirayama, Akio Mitsui Masao Yonemura, Hideki Iba and Ryoji Kanno, “High-power all-solid-state batteries using sulfide superionic conductors,” Nature Energy, 21 March 2016, Article Number 16030, DOI 10.1038/NENERGY.2016.30,

30,000: the number of homes to be powered by world’s largest lithium-ion battery array.
Steve Dent, Tesla completes its giant Australian Powerpack battery on time, Engadget November 23, 2017,

200,000: the number of charges experimental gold nanowires can take without losing capacity.
Luke Edwards, Nanowire battery can extend your phone battery life by hundreds of thousands of times, Pocket-lint, April 21, 2016,