The present invention provides a battery discharge apparatus including: a discharge unit; a monitoring unit including a plurality of power detecting units connected to the discharge unit in parallel and connected to a plurality of batteries, respectively; a plurality of temperature sensors connected to the monitoring unit and sensing a temperature of the plurality of batteries; and a plurality of gas sensors connected to the monitoring unit and sensing a gas of the plurality of batteries.

A secondary battery charging system includes: an application including a battery and a battery management system (BMS); and a charger configured to supply charging power to the battery and to communicate with the application. Data related to at least one of the battery and the application is transmitted to the charger.

A mobile power source system with maintenance charging and a method of maintenance charging the mobile power source system are disclosed. In one aspect, the mobile power source system includes a bidirectional inverter electrically connected to the battery and configured to convert an alternating current (AC) power to direct current (DC) power in a first direction and convert DC power to AC power in a second direction. The system also includes a first switch configured to provide grid power from an electrical grid to the bidirectional inverter when switched on and stop providing the grid power to the bidirectional inverter when switched off. The system further includes a second switch configured to provide battery power from the bidirectional inverter to a load when switched on and stop providing the battery power to the load when switched off.

Power packs configured to supply power to a common load are provided. A power pack includes a first power source; a second power source; at least one adapter configured to receive the common load and electrically couple the common load to at least one of the first power source or the second power source for supplying power to the common load; a tether interface electrically coupled to the at least one adapter, the first power source, and the second power source and configured to arrange the first power source and the second power source in series or in parallel; and a control circuit comprising at least one controller for performing a plurality of operations.

A battery system includes a battery subpack having first and second battery cells, a cell monitoring circuit, a RF transmitter, an RF receiver, a subpack microprocessor, and a first transceiver. The circuit measures a voltage of a first battery cell. The system includes a master controller having a second transceiver. The RF transmitter sends a voltage value corresponding to the voltage of the first battery cell to the RF receiver. The subpack microprocessor determines the first battery cell has an overvoltage condition based on the voltage value and sends an overvoltage message to the master controller via the first and second transceivers. The subpack microprocessor induces first and second subpack contactors to each have an open operational state when the master controller sends an open command to the subpack microprocessor.

A lawn mower includes a drive wheel, a mowing deck including a cutting blade, a wheel motor operable to rotate the drive wheel, a cutting blade motor operable to rotate the cutting blade, and a battery system. The battery system includes a battery configured to power the wheel motor and the cutting blade motor and a battery controller communicably coupled to the battery. The battery controller includes one or more processors and memory storing instructions that, when executed by the one or more processors, cause the one or more processors to determine an electric current threshold for the battery, broadcast a message comprising the electric current threshold, compare an actual electric current of the battery to the electric current threshold, and adjust an operation of the battery system in response in response to determining that the actual electric current of the battery exceeds the electric current threshold for a predetermined amount of time.

A battery pack assembly configured to supply power to a common load includes a backpack wearable on a back of a user, at least one battery arranged in the backpack and electrically coupled to the common load via a tether, and a communications interface operable between the battery pack and the common load. The communications interface is configured to perform one or more operations, including but not limited to receiving and transmitting operational information to and from the battery pack and the common load, the operational information relating to at least one of the battery pack or the common load.

An assembly for enabling a caregiver to secure a physiological monitoring device to an arm of a user can include the physiological monitoring device a cradle configured to removably secure to the physiological monitoring device and to the user's arm. The physiological monitoring device can include a first connector port configured to electrically connect to a first cable and a first locking tab movable between an extended position and a retracted position. The cradle can include a base, first and second sidewalls, a back wall connected to the base and the first and second sidewalls. The cradle can further include a first opening in the back wall configured to receive the first connector port and a second opening in the first sidewall configured to receive the first locking tab when the physiological monitoring device is secured to the cradle and the first locking tab is in the extended position.

Apparatus for protecting batteries from impact, dust, dirt, moisture, smoke, and flame comprised of a container that accepts modular battery inserts that releasably retain batteries. Apparatus for protecting batteries capable of capturing batteries between insertable structures and the protective container walls. The apparatus can include insertable structures that can be inserted into the container in multiple orientations to provide or restrict access to batteries retained in said insertable structures. The apparatus can include electronics within the container, configured to charge batteries stored in the container either by utilizing an onboard power source such as an additional battery or an external power source such as household alternating current power, or both.

There are provided an electric vehicle and a control method thereof, the electric vehicle including: a motor configured to cause the electric vehicle to travel; a plurality of battery packs configured to supply electric power to the motor; an electric power path electrically connecting the motor and the plurality of battery packs; a switching element configured to electrically switch disconnection and connection of the electric power path; and a controller configured to control the switching element. The controller performs a pack balance control that causes, when at least one of predetermined control start conditions is satisfied, the switching element to repeatedly open and close to perform an intermittent charging and discharging operation between the plurality of battery packs, and reduces a potential difference between the plurality of battery packs.