A riding lawn mower comprising, a pair of rear drive wheels, a pair of front wheels, a deck positioned between the pair of front wheels and the pair of rear drive wheels, a rotatable cutting blade, and multiple battery packs removably coupled to the riding lawn mower and structured to provide power to the riding lawn mower, each battery pack graspable and removable by a user, wherein the multiple battery packs sequentially provide power to the riding lawn mower.

A configuration instruction associated with configuring a plurality of batteries which supply power to a plurality of motors in a vehicle is received. The batteries are configuring as specified by the configuration instruction, where the batteries are able to be configured in a plurality of configurations, including: a first configuration where at least some of the batteries are electrically connected together in parallel and a second configuration where at least some of the batteries are electrically connected together in series.

A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage.

Systems and methods for storing energy for use by an electric vehicle are disclosed. Systems can include an electric vehicle battery pack including a rack configured to couple a plurality of independently removable battery strings to the vehicle, the battery strings configured to be selectively coupled in parallel to a vehicle power bus. The battery strings may include a housing, a plurality of electrochemical cells disposed within the housing, a circuit for electrically connecting the electrochemical cells, a positive high-voltage connector, a negative high-voltage connector, a switch within the housing, and a string control unit configured to control the switch. Each battery string can include a coolant inlet and a coolant outlet configured to couple with and sealingly uncouple from an external coolant supply conduit and an external coolant return conduit, and an auxiliary connector configured to couple with an external communications system and/or an external low-voltage power supply.

The invention relates to a battery housing (1) for a vehicle driven by an electric motor, which is to be installed in the floor region of a vehicle, having a frame (2), which encloses at least one battery module, and a floor (3), which is connected to the frame (2), The floor (3) takes the form of a sandwich construction and forms hollow chambers (18, 18′), which can be used as temperature-control channels for guiding through a fluid by virtue of end-side openings in adjacent hollow chambers (18, 18′) being connected to one another at their two ends.

A vehicle battery assembly having specialized fasteners that includes an integrated compression limiter. The compression limiter provides protection for the fastening joint of a cover and a tray of a housing for the battery assembly. The battery assembly may also include nut and bolt assembly which may be installed by a nut insertion tool. The nut insertion tool allows the nut and bolt assembly to be installed without damaging the tray or the cover.

A battery pack for efficiently supplying a power to a vehicle and including a battery assembly, a power supply terminal connectable to a connection terminal of the vehicle that is connected to a vehicle control unit and a vehicle motor, a power supply path located between the power supply terminal and the battery cell and supplying a power from the battery cell to the power supply terminal, a switching unit provided on the power supply path electrically turn on/off the power supply path, a mounting recognition unit recognizing whether the battery pack is mounted to the vehicle, and a processor controlling the switching unit so that a power is supplied from the battery cell to the vehicle control unit, when receiving a signal from the mounting recognition unit that the battery pack is recognized as being mounted to the vehicle.

Presently disclosed subject matter integrates a method of using thousands of semi-autonomous unmanned aerial vehicles, herein called drones, to deliver vastly superior amounts of fire retardant over substantially larger and variably-shaped drop patterns. Each drone is able to swap its own batteries with freshly charged batteries and each drone is able to refill its container with water or fire retardant. Once launched, a swarm of drones can perform repeated trips from the water/retardant source to the fire without human involvement other than the high-level tasking of where to drop the retardant. Once a general drop destination and drop pattern shape is designated, the swarm can transport retardant to that location, form itself into the desired drop shape, and deploy retardant. The drone body is designed to be modular so different components can be attached with ease and no special training or knowledge required.

A battery enclosure for a personal watercraft is provided. Different configurations of the battery enclosure are disclosed, as well as different arrangements of the battery enclosure within the personal watercraft and with respect to other features of the personal watercraft. According to one embodiment, a personal watercraft includes a deck and a hull defining an interior volume. An electric motor is housed within the interior volume, the electric motor being operable to rotate a drive shaft. A battery pack having a battery enclosure housing one or more batteries is also positioned within the interior volume. A portion of at least one battery of the one or more batteries is positioned vertically above the drive shaft.

A bottom structure for an electric vehicle including at least a first and second beam-shaped battery modules extending in a length direction. Each module is formed by a number interconnected cells and has two longitudinal sides, two transverse sides and a top side covered by a cover plate. The modules are mutually interconnected along their longitudinal sides via an adhesive.