A battery system includes a power bus and a set of battery packs. A battery pack is one or more batteries, a sensor board, and a power board. The power bus is used to electrically connect the set of battery packs. The sensor board receives a voltage difference between a battery pack not connected to the power bus and the power bus; determines whether the voltage difference indicates that a battery pack voltage is too high compared to a power bus voltage; in response to determining the voltage difference indicates that the battery pack voltage is too high compared to the power bus voltage, provides a drain indication to drain off the battery pack using a power draw mechanism until the voltage of the battery pack is within a threshold voltage difference of the power bus; and provides a connect indication to connect the disconnected battery pack to the power bus.

A four-device-in-one skybox dehydrator sauna wind-redirecting bungalow comprises: adjustable louver blades attached to side gutter beams for preventing rainwater from getting into the bungalow and adjustably controlling amount of sunlight that shines into the bungalow, chutes formed to the side gutter beams and end gutter beams, solar-rechargeable batteries installed within adjustable louver blades for powering led lights and saving costs of replacing non-rechargeable alkaline batteries and helping reduce carbon footprint, a solar panel mounted to adjustable louver blades for collecting solar energy to charge and recharge rechargeable batteries and saving energy costs associated with lighting the bungalow and saving costs of replacing with non-rechargeable alkaline batteries and providing freedom to place the bungalow away from a power outlet and helping reduce carbon footprint, panel frames, panel inserts inserted within the panel frames for enabling the bungalow to become a sauna and a skybox and a dehydrator and providing security and insulation and protection from wind within the bungalow, louver braces inserted within the panel frames for allowing the louvers to be rotated, flipped, and positioned to redirect wind direction and structuringly securing louvers, axis pins inserted within the louver braces for providing eight locking points to reposition and locking and unlocking and pivotingly functionalizing the louver braces, louvers attached to the louver braces for redirecting and blocking and reducing and sealing the bungalow to create a sauna and a skybox and a dehydrator, an inner-track insert slidably inserted within hook-sliding track for providing a smooth sound-dampening track for slide hooks to be inserted for securing a curtain or insect screen, a curtain removably hooked onto slide hooks for providing privacy and protection from harmful sun rays and wind and insects, an extending-and-retracting door for providing protection from wind and harmful sun rays and insulation from cold temperatures and security within bungalow, door-spool housing attached to door-spool-housing bracket for providing discrete storage and protection of the extending-and-retracting door, drain openings formed into the corner-posts, corner-post-base-plate covers slidably attached onto the corner-posts, corner-post base-plates secured to the corner-posts, sliding-door track attached to the corner-post base-plates, the panel frames interchangably and slidably placed into the sliding-door track, anchoring-screw holes drilled into the corner-post base-plates, and tube-screws screwed into the anchoring-screw holes for leveling bungalow when installed on an uneven ground sur

A power device capable of displaying various statuses and a displaying method are provided. The power device includes: a central microprocessor, a power conversion circuit, an LED bar (or a light bar) circuit, and a battery pack. The central microprocessor intrinsically has color setting and control logic and is internally provided with a color setting and control logic circuit. The power device is externally connected to a utility power source, a solar photovoltaic power source, a backup battery pack, and a load. The color setting and control logic circuit enables the LED bar circuit to correspondingly emit LED light of at least two colors according to different power sources supplied to the load or a battery capacity, and the LED light is displayed in a breathing-like manner. The central microprocessor adjusts a breathing rate of the LED light according to a power consumption of the load.

An unmanned aerial vehicle (UAV) for a remote oceanic environment includes a float system, at least one electric motor, and a seawater battery. The float system allows the UAV to maintain buoyancy on a body of water. The electric motor or motors produce the required lift for the UAV to achieve and maintain flight. The flight includes the UAV landing on the body of water and takeoff from the body of water. The seawater battery directly or indirectly powers the electric motor or motors using seawater from the body of water while the UAV is floating on the body of water.

The present disclosure relates to a reconfigurable battery system and method of operating the same. The reconfigurable battery system comprising a plurality of switchable battery modules, a battery supervisory circuit, and a battery pack controller, where the plurality of switchable battery modules electrically arranged in series to define a battery string defining an output voltage. The battery pack controller operably coupled to the battery supervisory circuit to selectively switch, for each of the plurality of switchable battery modules, the battery switch between the first position and the second position based at least in part on the one or more parameters of the battery and in accordance with a predetermined switching routine.

A solar rechargeable vehicle refrigerator with plug-in battery, comprising a refrigerator body (1), wherein one side of the refrigerator body (1) is provided with a battery compartment (7) and a battery pack (2) is inserted into the battery compartment (7); the front end of the battery pack (2) is centrally and symmetrically provided with a pair of unlocking buttons (3) which can relatively and transversely move, and a spring (4) is connected between two unlocking buttons (3) which are correspondingly connected with side lock rods (5), the outer ends (51) of the side lock rods (5) are inserted into the lock holes (71) on sides of the battery compartment (7). The invention has simple structure, and the battery pack can be easily taken out and fixed in place.

A solar energy charging system of a vehicle includes a dynamically adjustable battery (DAB) configured to be connected to a solar energy conversion device and charged by the solar energy conversion device. The DAB is controllable to adjust an output voltage of the DAB to one of a plurality of output voltages, and the DAB is configured to supply electrical power generated by the solar energy conversion device to a vehicle battery assembly. The solar energy charging system also includes a controller configured to detect an input voltage to the conversion device, select an output voltage of the DAB based on the input voltage, and control the DAB to provide the selected output voltage to a high voltage DC-DC converter to charge the battery assembly.

Disclosed is an electronic device which comprises: a first housing; a second housing; a support configured to couple the first housing and the second housing such that the first housing is rotatable with respect to the second housing; a spring configured to apply an elastic force to the first housing and the second housing such that one end of the first housing abuts against one end of the second housing; and a connector disposed within the first housing, wherein the first housing, the second housing, the support and the spring function as a clip capable of clamping an object between the one end of the first housing and the one end of the second housing, and wherein the connector is mechanically and electrically attachable to or detachable from a connector of an external energy harvesting module through an opening provided in a side surface of the first housing.

Provided herein are systems and methods for storing energy. A photon battery assembly may comprise a light source, phosphorescent material, a photovoltaic cell, and a waveguide. The phosphorescent material can absorb optical energy at a first wavelength from the light source and, after a time delay, emit optical energy at a second wavelength after a time delay. The photovoltaic cell may absorb the optical energy at the second wavelength and generate electrical power. In some instances, a first waveguide may be configured to direct the optical energy at the first wavelength from the light source to the phosphorescent material and/or a second waveguide may be configured to direct the optical energy at the second wavelength from the phosphorescent material to the photovoltaic cell.

The present disclosure relates to a reconfigurable battery system and method of operating the same. The reconfigurable battery system comprising a plurality of switchable battery modules, a battery supervisory circuit, and a battery pack controller, where the plurality of switchable battery modules electrically arranged in series to define a battery string defining an output voltage. The battery pack controller operable to connect the battery string to the external bus via a pre-charge switch to perform a pre-charge cycle.