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2. Automobile auxiliary power outlet - Wikipedia

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

   For instance, portable solar battery maintainers generally connect to a vehicle's battery in this manner. Trickle chargers also sometimes connect in this way, eliminating the need to leave a vehicle's hood open, as well as eliminating the possibility of reversed polarity. Most cars nowadays are designed with a battery-negative earthing system ...

3. Universal charger - Wikipedia

   en.wikipedia.org/wiki/Universal_charger

   Mobile phone charger plugs. Universal charger or common charger refers to various projects to standardize the connectors of power supplies, particularly for battery-powered devices. Since the publication of the USB Power Delivery standard in 2012, and the USB-C connector in 2014, USB-C has become a widespread standard for charging mobile phones.

4. History of the battery - Wikipedia

   en.wikipedia.org/wiki/History_of_the_battery

   Successive improvements in battery technology facilitated major electrical advances, from early scientific studies to the rise of telegraphs and telephones, eventually leading to portable computers, mobile phones, electric cars, and many other electrical devices. Students and engineers developed several commercially important types of battery.

5. Pixel 7 - Wikipedia

   en.wikipedia.org/wiki/Pixel_7

   The Pixel 7 has a 4355 mAh battery, while the Pixel 7 Pro has a 5000 mAh battery. Both phones support fast charging, [23] Qi wireless charging, as well as reverse wireless charging. [24] The Pixel 7 is available in 128 or 256 GB of storage and 8 GB of RAM, and the Pixel 7 Pro is available in 128, 256, or 512 GB of storage and 12 GB of RAM.

6. Phone connector (audio) - Wikipedia

   en.wikipedia.org/wiki/Phone_connector_(audio)

   Phone plug mated in a phone socket. The plug's grooved tip is held firmly by the socket's spring tip contact. When not mated, this spring instead connects to the flat switch contact for detecting a plug. TS and TRS plugs of different sizes. A phone connector is a family of cylindrically-shaped electrical connectors primarily for analog audio ...

7. Mobile phone - Wikipedia

   en.wikipedia.org/wiki/Mobile_phone

   Two decades of evolution of mobile phones, from a 1992 Motorola DynaTAC 8000X to the 2014 iPhone 6 Plus. A mobile phone or cell phone [a] is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone (landline phone).