[woodbutcher1963]

Some of these E Bikes have 72 volt or larger batteries now.
The battery is about 5” x 5” x 20”.

This is pretty much the top of the line EBike. Basically an electric motocross bike. Top speed 62 mph.

https://www.eridepro.com/products/pro-ss-3-0?srsltid=AfmBOopuSY3ai0fnVN9646UtVwj7W0ciwXMRFEsddaFRFU5FPelTHfR1

It has a 72 volt 3600 WATT battery.

[TexasGator]

“
It has a 72 volt 3600 WATT battery.”

3600 watt-hour.

6 kW Rated/ 15.8 kW Peak