When I got my Boosted Board extended battery in the mail I was so happy that I completely forgot to write about it. A few days have passed and I feel certain that I have enough experience with the extended range battery that I can write something about it. What I noticed first – Although the extended range battery is almost 50% of the original size, it’s almost 3 times more powerful 99wH vs 267wH. The new battery also has some volt difference then the old one: closer to 50V at charging and the standard at like 43V. The extended range has a lower output voltage of 46.8V. Standard range battery is 54.4V.