Board Thread:Questions and answers/@comment-44319557-20191107231026/@comment-27306930-20191108033235

Let's clear something up first. They are called IMR batteries (it stands for Ion Manganese Rechargeable). The type most commonly used in Nerf blasters are 14500 3.7v IMRs. It is really important to use IMRs with built-in circuit protection. If the voltage falls below 2.5 volts, unprotected cells will catch fire when recharging.

The stock 130 motors will definitely run on 4 IMRs at 14.8 volts. The problem is, at higher voltages the life of the motor is reduced. At 14.8 volts the commutator looks like it's on fire and there is a heavy scent of ozone. Both bad signs. At this voltage, bearing-less unvented motors like these generate a LOT of heat. They will only last a few dozen minutes, at most.

Running with 3 IMRs and a dummy cell also decreases the life of the stock motors. But at 11.1 volts you will get hours of life out of the motors instead of just minutes. Some modders run their blasters on three cells, then upgrade the motors when they burn out. Which they will.

Running on 2 IMRS and 2 dummies is quite safe. It's only a 1.4 volt increase. You will get OK performance and they will last indefinitely.

So the short answer is yes, four IMRs will kill your Stryfe. Dummy cells are available on Amazon, search for "aa dummy cell"