Board Thread:General Nerf discussion/@comment-38684270-20200316040718/@comment-27306930-20200319180116

One of the benefits of LiPos is the high amount of current they can supply for extended periods of time. Stock Nerf blasters don't actually rely on the amperage of the battery or the torque of the motors to fire the rounds. The energy in the battery is converted to momentum in the flywheels by the motors, which is then transferred to the rounds as they're fired. That's why there's flywheel lag, especially after firing several shots in a row. The relatively weak motors take a moment to transfer some energy back into the flywheels and bring them back up to speed.

But a LiPo can continuously supply 20 or more amps. In some cases a lot more. So the motors can use that additional amperage to directly propel the rounds via torque. Or at least help propel the rounds. It's actually a combination of transfer of momentum and direct torque. Bottom line, the combined effect means there's very little, if any, recovery time for the flywheels. It also means the flywheel spin-up time is greatly reduced because of the extra torque the motor can produce when connected to a high current power supply like a LiPo.

This effect can really be seen in the Nemesis with the Nerf Rechargeable Battery Pack. The pack only produces 7.2 volts, but it can produce over 20 amps. So the voltage is actually 20% lower than alkaline batteries, but the amps are almost doubled. The addition of torque to flywheel momentum results is a marked improvement in performance, in both FPS and ROF.