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2. Cordless telephone - Wikipedia

   en.wikipedia.org/wiki/Cordless_telephone

   Many cordless phones in the 21st century are digital. Digital technology has helped provide clear sound and limit casual eavesdropping. Many cordless phones have one main base station and can add up to three or four additional bases. This allows for multiple voice channels that allow three-way conference calls between the bases. This technology ...

3. The 7 Best Cordless Phones That Combine Simplicity and ... - AOL

   www.aol.com/7-best-cordless-phones-combine...

   KX-TDG863W Cordless Phone. With two-way recording, bilingual talking caller ID, hearing aid compatibility, automated call blocking, and intercom support, this model delivers an impressive array of ...

4. Inductive charging - Wikipedia

   en.wikipedia.org/wiki/Inductive_charging

   Inductive chargers produce more waste heat than wired chargers, which may negatively impact battery longevity. [ 14 ] [ better source needed ] An amateur 2020 analysis of energy use conducted with a Pixel 4 found that a wired charge from 0 to 100 percent consumed 14.26 Wh ( watt-hours ), while a wireless charging stand used 19.8 Wh, an increase ...

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 , amperes, current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.

6. Common external power supply - Wikipedia

   en.wikipedia.org/wiki/Common_external_power_supply

   Incompatibility of chargers for mobile phones is a major environmental problem and an inconvenience for users across the EU. Currently specific chargers are sold together with specific mobile phones. A user who wants to change his/her mobile phone must usually acquire a new charger and dispose the current one, even if this is in perfect condition.

7. Telephone - Wikipedia

   en.wikipedia.org/wiki/Telephone

   A cordless telephone system consisting of a handset resting on a base station (left) and a second handset resting on a battery charger unit (right) A cordless telephone or portable telephone consists of a base station unit and one or more portable cordless handsets. The base station connects to a telephone line, or provides service by voice ...