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2. 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.

3. Stationary bicycle - Wikipedia

   en.wikipedia.org/wiki/Stationary_bicycle

   Stationary bikes are also used for physical testing, i.e. as ergometers for measuring power. Traditionally this is done by imposing a certain level of resistance mechanically and/or measuring this. [5] gives a good overview. Modern ergometers and even many consumer exercise bikes are fitted with electronic sensors and displays.

4. Standby power - Wikipedia

   en.wikipedia.org/wiki/Standby_power

   Standby power, also called vampire power [1], vampire draw, phantom load, ghost load, or leaking electricity, refers to how electronic and electrical appliances consume electric power. At the same time, they are switched off (but are designed to draw some power) or in standby mode. It only occurs because some devices claim to be "switched off ...

5. Electric bicycle - Wikipedia

   en.wikipedia.org/wiki/Electric_bicycle

   DC motors are commonly used in electric bicycles, either brushed or brushless. Many configurations are available, varying in cost and complexity; direct-drive and geared motor units are both used. An electric power-assist system may be added to almost any pedal cycle using chain drive, belt drive, hub motors or friction drive. [citation needed]

6. Charging station - Wikipedia

   en.wikipedia.org/wiki/Charging_station

   A charging station, also known as a charge point, chargepoint, or electric vehicle supply equipment (EVSE), is a power supply device that supplies electrical power for recharging plug-in electric vehicles (including battery electric vehicles, electric trucks, electric buses, neighborhood electric vehicles, and plug-in hybrid vehicles).

7. Motorized bicycle - Wikipedia

   en.wikipedia.org/wiki/Motorized_bicycle

   the pedelecs (electric-motor assisted bicycle) which the maximum power assist ratio in times are 2 under 10 km/h (6.2 mph), 2 - (speed in km/h minus 10) / 7 between 10 – 24 km/h (6.2 - 14.9 mph) and zero over 24 km/h (14.9 mph): [39] as regular bicycles. electric-motored shopping cart, trolley bag or rollator within the size length 120 cm ...