Abstract: An implementation of a battery cradle includes a tray, a first side frame attached to a first side of the tray, and a second side frame attached to a second side of the frame. The first side frame and the second side frame face each other and are substantially parallel to one another. Both the first side frame and the second side frame include a plurality of generally circular recesses, in which each recess on the first side frame is opposite to and aligned with a recess on the second side frame. Each pair of aligned recesses accommodates a generally cylindrical battery. According to various implementations, the tray includes (i) a plurality of depressions, each of which is aligned with a pair of aligned recesses and (ii) a plurality of slats configured to accommodate a prism-shaped battery pack.

Abstract: A locking differential gear carrier comprises a gear carrier housing, a first output shaft, a second output shaft differentially linked to the first output shaft, an internal gear affixed perpendicular to the first output shaft and disposed within the gear carrier housing, and a locking actuator assembly. The locking actuator assembly is disposed exterior to the gear carrier housing and includes a locking ring to which a pin is affixed, the locking ring movable by a servo motor toward and away from the gear carrier housing, the pin disposed in parallel with the first output shaft and passing through the gear carrier housing to selectively engage with a recess of the internal gear to lock the first output shaft to the gear carrier housing and cause the first output shaft and the second output shaft to rotate synchronously.

Abstract: A locking differential gear carrier comprises a gear carrier housing, a first output shaft, a second output shaft differentially linked to the first output shaft, an internal gear affixed perpendicular to the first output shaft and disposed within the gear carrier housing, and a locking actuator assembly. The locking actuator assembly is disposed exterior to the gear carrier housing and includes a locking ring to which a pin is affixed, the locking ring movable by a servo motor toward and away from the gear carrier housing, the pin disposed in parallel with the first output shaft and passing through the gear carrier housing to selectively engage with a recess of the internal gear to lock the first output shaft to the gear carrier housing and cause the first output shaft and the second output shaft to rotate synchronously.