Ann: Quarterly Activities/Appendix 5B Cash Flow Report, page-99

Here is an interesting article entitled
"New Breakthrough brings Batteries that Charge in Five Minutes"

https://www.independent.co.uk/tech/battery-charging-speed-electric-vehicles-b2488568.html
A quote from that article

“If you can charge an EV battery in five minutes, I mean, gosh, you don’t need to have a battery that’s big enough for a 300-mile range. You can settle for less, which could reduce the cost of EVs, enabling wider adoption.”

"As such, a wide variety of projects are being undertaken to try and speed up charging. The new research from Cornell came at the same time as engineers from the US Department of Energy’s Brookhaven National Laboratory found another innovation that significantly improves the rate at which batteries can be charged.

The researchers found that adding a compound called caesium nitrate to a part of the battery dramatically improves the charging rate of lithium metal batteries – while allowing them to keep a long life cycle."

The team behind the breakthrough are part of the Battery500 Consortium, a collaboration of labs and universities that are looking to create batteries that have an energy density of 500 watt-hours per kilogram – more than double that available today.

https://www.independent.co.uk/tech/battery-charging-speed-electric-vehicles-b2488568.html