Abstract: A drill string device configured to operate at a down hole location in a well bore toward a location proximate the surface of an earthen formation includes one or more motors and/or a capacitor bank. The drill string device may be in fluidic communication with a drilling fluid. A first motor of the one or more motors may be operated as part of processing the drilling fluid. A first electrical energy may be provided to the first motor at least as the first motor is operating. A signal to stop the first motor may be received and/or the first motor may be stopped. A second electrical energy may be received from the first motor at least as the first motor is stopping. At least some of the second electrical energy may be directed to the capacitor bank.