Board Thread:General Nerf discussion/@comment-35070608-20180726051501/@comment-27306930-20180728153213

The easiest is an IMR battery upgrade. But it’s not the cheapest. You’ll need two 3.7v batteries, two dummies, and a special charger. There are no physical mods needed.

The cheapest is a motor replacement. You can get two RM2s or a pair of Honey Badgers for less than 10 bucks. They’ll work with or without a battery upgrade. Better with.