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  2. Automotive battery - Wikipedia

    en.wikipedia.org/wiki/Automotive_battery

    The first starting and charging systems were designed to be 6-volt and positive-ground systems, with the vehicle's chassis directly connected to the positive battery terminal. [10] Today, almost all road vehicles have a negative ground system. [11] The negative battery terminal is connected to the car's chassis.

  3. Battery terminal - Wikipedia

    en.wikipedia.org/wiki/Battery_terminal

    positive on left and negative on the right corner; negative on the left and positive on the right corner. Terminals can also be both on the long or short side of the battery, or diagonally opposed, or in the middle. Purchasing the wrong configuration may prevent battery cables from reaching the battery terminals.

  4. Automobile auxiliary power outlet - Wikipedia

    en.wikipedia.org/wiki/Automobile_auxiliary_power...

    For the 12 volt systems, the center contact is the positive terminal and the shell is the negative terminal. Most automobiles connect the negative terminal to the frame of the vehicle (negative ground). 12 volt auto connectors are made to comply with a standard by Underwriters Laboratories for safety. UL2089 was developed to cover the ...

  5. Electric vehicle battery - Wikipedia

    en.wikipedia.org/wiki/Electric_vehicle_battery

    The battery pack also contains relays, or contactors, which control the distribution of the battery pack's electrical power to the output terminals. In most cases there will be a minimum of two main relays which connect the battery cell stack to the main positive and negative output terminals of the pack, which then supply high current to the ...

  6. DC connector - Wikipedia

    en.wikipedia.org/wiki/DC_connector

    In most vehicles, this means that the exposed terminal connects to the battery's negative terminal. Conversely, the positive terminal on a battery charger is exposed to mate with the concealed one on the vehicle side. (This is reversed on vehicles with a positive-ground frame, such as vintage British motorcycles.) Although there is a risk of ...

  7. Battery nomenclature - Wikipedia

    en.wikipedia.org/wiki/Battery_nomenclature

    Category 1: Cylindrical cells with protruding positive and recessed or flat negative terminals. The positive terminal shall be concentric with the cell overall. The total height of the cell is not necessarily the same as the total distance between terminals (This accounts for nubs, recesses and battery casings). The cell casing is insulated. E.g.

  8. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    This battery contained two independent 4.5 V batteries, and had a four-pin connector. 9 V with a center tap was available by wiring in series. There were two ⌀3.2 mm negative pins spaced 9.5 mm apart and two ⌀4.0 mm positive pins spaced 14.3 mm apart. Negative and positive pins were spaced 18.1 mm apart.

  9. Electric car charging methods - Wikipedia

    en.wikipedia.org/wiki/Electric_car_charging_methods

    Chassis of a Tesla Model S, exposing battery pack area. The process of discharging involves lithium ions from a positive electrode passing through a separator/electrolyte. The ions then transfer, via a solid electrolyte interface (SEI) and intercalate, into the negative electrode. The potential negative impact for rapid charging is that battery ...

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