You might be right... It’s 40 volts and 20 amp hours.
40 volts times 20 amps gives you 800 Watt hours, or .8 Kwh. Gasoline can have about 40 KWh per gallon. Your battery holds about .8/40 gallons, = .02 equivalent gallons. There are two cups in a pint, and 8 pints in a gallon, so a cup is 1/16 gallon, = .06 gallons. So your bike holds about a third of a cup in equivalent gallons of gasoline.
That's more than I would have expected for a starting battery on a motorcycle. You must have a battery powered bike.