Is the Hercules 5.0AH battery worth upgrading too? Compared to the 2.0AH This is one of many tests I will be doing comparing different battery sizes to see if they are really worth the extra money. Todays test we have the 2.0ah and the 5.0 ah boost battery from Hercules. The 5.0 Boost comes with a $75 price tag and really makes you wonder if it makes that much of a difference. Going off this first test, I am going to say yes! We are using 1/2