A modular system may include a plurality of magnets that may be provided to self-align a casing with an accessory. Self-alignment of the casing and the accessory may provide a secure connection of the casing with the accessory. At least one detent and at least one locking arm may mate and lock the casing against the accessory in a mounted position. The at least one detent and the at least one locking arm may unlock in an insertion position. Self-alignment may occur when a first set of magnets attracts a second set of magnets in which opposite polarities attract and automatically initiate movement of the casing towards the accessory.

The present invention discloses a self-balancing scooter, including a scooter body, wheels, a driving motor, a power supply, a circuit board provided with a sensor, a controller and a light emitting lamp. The controller is electrically connected to the circuit board, the power supply and the driving motor respectively. The scooter body includes: an upper shell, pedals, a middle shell, a lower shell and a lampshade. The middle shell is located between the upper shell and the lower shell. The lampshade is provided with at least two spaced lamp strips for transmitting light. The scooter body is provided with lamp holes for placing the lamp strips. A quantity of the lamp holes is identical with a quantity of the lamp strips. Waterproof rings are sleeved on the lamps strips.

The present invention discloses a self-balancing scooter, including a scooter body, wheels, a driving motor, a power supply, a circuit board provided with a sensor, a controller and a light emitting lamp. The controller is electrically connected to the circuit board, the power supply and the driving motor respectively. The scooter body includes: an upper shell, pedals, a middle shell, a lower shell and a lampshade. The middle shell is located between the upper shell and the lower shell. The lampshade is provided with at least two spaced lamp strips for transmitting light. The scooter body is provided with lamp holes for placing the lamp strips. A quantity of the lamp holes is identical with a quantity of the lamp strips. Waterproof rings are sleeved on the lamps strips.

A connecting-state detection system for a power supply system of a human-powered vehicle comprises a detector. The power supply system includes a power supply device having a plurality of connecting terminals. The detector is configured to detect a connecting state of each of the plurality of the connecting terminals.

Provided herein is a lighting system for a two- or three-wheeled vehicle. The lightning system has at least one light bar each of which has a housing enclosing a support matrix to which a plurality of light emitting diodes are operably attached, a power supply and at least one mount to secure the light bar to the two- or three-wheeled vehicle. The power supply is operably connected to the light bar to operate the light emitting diodes. The power supply may have a driver for operating the light emitting diodes in a sequence.

Provided herein is a lighting system for a two- or three-wheeled vehicle. The lightning system has at least one light bar each of which has a housing enclosing a support matrix to which a plurality of light emitting diodes are operably attached, a power supply and at least one mount to secure the light bar to the two- or three-wheeled vehicle. The power supply is operably connected to the light bar to operate the light emitting diodes. The power supply may have a driver for operating the light emitting diodes in a sequence.

A bicycle includes a frame, a motor, a battery, and a key interface. The frame includes a head tube, a down tube coupled to the head tube, a central hub coupled to an end of the down tube opposite the head tube and defining an internal cavity, and a mount positioned at least partially directly underneath the internal cavity. The motor is coupled to the mount such that the motor is positioned at least partially underneath the internal cavity. The battery extends at least partially into the internal cavity of the central hub and positioned at least partially directly above the motor. The battery is configured to power the motor. The key interface is supported by the mount. Engaging the key interface releases the battery to facilitate removing the battery from the frame.

A bicycle includes a frame, a motor, a battery, and a key interface. The frame includes a head tube, a down tube coupled to the head tube, a central hub coupled to an end of the down tube opposite the head tube and defining an internal cavity, and a mount positioned at least partially directly underneath the internal cavity. The motor is coupled to the mount such that the motor is positioned at least partially underneath the internal cavity. The battery extends at least partially into the internal cavity of the central hub and positioned at least partially directly above the motor. The battery is configured to power the motor. The key interface is supported by the mount. Engaging the key interface releases the battery to facilitate removing the battery from the frame.

A modular system may include a plurality of magnets that may be provided to self-align a casing with an accessory. Self-alignment of the casing and the accessory may provide a secure connection of the casing with the accessory. At least one detent and at least one locking arm may mate and lock the casing against the accessory in a mounted position. The at least one detent and the at least one locking arm may unlock in an insertion position. Self-alignment may occur when a first set of magnets attracts a second set of magnets in which opposite polarities attract and automatically initiate movement of the casing towards the accessory.

A bicycle headlight is to be coupled to a handlebar of a bicycle. The bicycle headlight also may include an elongate housing having a first end and a second end opposite the first end, and LED devices carried by the elongate housing and being aligned in a pattern extending between the first end and the second end. The bicycle headlight may include a battery carried by the elongate housing and coupled to the devices, and an arm extending from the elongate housing and to be coupled to the handlebar of the bicycle.