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  2. Door breaching - Wikipedia

    en.wikipedia.org/wiki/Door_breaching

    Explosive breaching usually breaches doors via one of several mechanisms: pushing the door inward (e.g. water charge), cutting through the door's material (e.g. linear shaped charge), defeating the lock or hinge, or general blast effects (i.e. explosives in contact with door).

  3. USB killer - Wikipedia

    en.wikipedia.org/wiki/USB_Killer

    Versions of the device have been reported to deliver a pulse of around negative [4] 200 V. [2] [5] This greatly exceeds the normal voltage the USB host adapter is designed to accept; the intention is that the device will destroy it (and perhaps the southbridge which it often forms part of). In many cases, this will render the computer inoperable.

  4. Breaching round - Wikipedia

    en.wikipedia.org/wiki/Breaching_round

    A US Marine practices shotgun door-breaching techniques. A breaching round or slug-shot is a shotgun shell specially made for door breaching.It is typically fired at a range of 6 inches (15 cm) or less, aimed at the hinges or the area between the doorknob and lock and doorjamb, and is designed to destroy the object it hits and then disperse into a relatively harmless powder.

  5. Battery charger - Wikipedia

    en.wikipedia.org/wiki/Battery_charger

    A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage and current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.

  6. Self-destruct - Wikipedia

    en.wikipedia.org/wiki/Self-destruct

    The landmines have a battery and when the battery dies, the land mine self-destructs. [2] The self-destruct system never failed in over 67,000 tested landmines in a variety of conditions. [ 2 ] Not all self-destruct mechanisms are absolutely reliable, [ citation needed ] and most landmines that have been laid throughout history are not equipped ...

  7. Trickle charging - Wikipedia

    en.wikipedia.org/wiki/Trickle_charging

    Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, enabling the battery to remain at its fully charged level. This state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.

  8. Depth of discharge - Wikipedia

    en.wikipedia.org/wiki/Depth_of_discharge

    Depth of discharge (DoD) is an important parameter appearing in the context of rechargeable battery operation. Two non-identical definitions can be found in commercial and scientific sources. The depth of discharge is defined as: the maximum fraction of a battery's capacity (given in Ah) which is removed from the charged battery on a regular basis.

  9. Battery regenerator - Wikipedia

    en.wikipedia.org/wiki/Battery_regenerator

    In this mode the charger holds a steady voltage slightly above that of a full battery, in order to push current into the cells. As the battery fills, its internal voltage rises towards the fixed voltage being supplied to it, and the rate of current flow slows. Eventually the charger will turn off when the current drops below a pre-set threshold ...