A book? Battery size is a known quantity for both EVs and hybrids. It's not so much that the numbers are so far off, it's just interesting that you can't be bothered to do the most basic of research before making claims. But you did enough to make me curious enough to do a few web searches, so here goes.
FWIW, best case scenario, the Prius has a 1.4 kwh battery, the Prius plug in 4.4 kwh according to Wikipedia. Not sure if those are up to date for 2023 or not, but it's enough to make simple comparisons.
Comparing that to a Hummer EV at 210 kwh battery size, it's actually 150:1. However most EV vehicles don't have nearly that much battery capacity and at any rate the Hummer costs more than $100K. A better comparison than a Prius might be a Highlander hybrid or a Sienna hybrid.
A Motor Trend 2021 article I found about the Sienna hybrid does not mention a battery size but says it's smaller than the Chrysler Pacifica Hybrid's 16.0 KWH battery. So in that sense, you can onyl make 13.125 Pacifica batteries for every 1 Hummer EV battery.
A Model 3 standard range has 57.5 KWH, which yields a 41.07:1 ratio when compared to a Prius non-plug in. However if you use the Prius plug in vs the Model 3 standard range, then you're only talking about 13.06:1 ratio. There's also the additional consideration that the Prius has way less performance than the Model 3, although the size is similar from an interior capacity perspective. A perfect comparison would also consider the performance aspect.
Then you can make oddball comparisons. You can only make 2.5 Pacifica Hybrid batteries for every 1 Leaf standard range battery, but they don't really compete per se.
And so forth.