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  2. The RadMission 1 is a $1,099 e-bike that delivers the basics

    www.engadget.com/rad-power-bikes-radmission...

    To become truly mainstream, the industry is going to need cheaper models like the RadMission 1, developed by Rad Power Bikes. The bicycle was first unveiled with a $999 introductory price. That ...

  3. Electronic gear-shifting system - Wikipedia

    en.wikipedia.org/.../Electronic_gear-shifting_system

    An electronic gear-shifting system is a method of changing gears on a bicycle, which enables riders to shift with electronic switches instead of using conventional control levers and mechanical cables. The switches are connected by wire or wirelessly to a battery pack and to a small electric motor that drives the derailleur, switching the chain ...

  4. Radar beacon - Wikipedia

    en.wikipedia.org/wiki/Radar_beacon

    In the United States a longer duty cycle is used, 50% for battery-powered buoys (20 seconds on, 20 seconds off) and 75% for on-shore beacons. Ramarks are wide-band beacons which transmit continuously on the radar bands without having to be triggered by an incoming radar signal. The transmission forms a line of Morse characters on the display ...

  5. Battery management system - Wikipedia

    en.wikipedia.org/wiki/Battery_management_system

    A battery management system (BMS) is any electronic system that manages a rechargeable battery (cell or battery pack) by facilitating the safe usage and a long life of the battery in practical scenarios while monitoring and estimating its various states (such as SoH, and SoC), [1] calculating secondary data, reporting that data, controlling its environment, authenticating or balancing it. [2]

  6. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  7. Bluetooth alternative sends signals through the human body

    www.engadget.com/2015-09-01-bluetooth...

    "A problem with wearable devices like smart watches is that they have short operating times because they are limited to using small batteries. With this magnetic field human body communication ...

  8. The best wireless headphones for 2024: Bluetooth options for ...

    www.engadget.com/best-headphones-wireless...

    The company’s latest is the M20xBT, a Bluetooth version of the A-T’s popular M20x wired cans. For just $79, you can expect a comfortable fit and up to 60 hours of battery life. Bluetooth ...

  9. Deep-cycle battery - Wikipedia

    en.wikipedia.org/wiki/Deep-cycle_battery

    A deep cycle battery powering a traffic signal. A deep-cycle battery is a battery designed to be regularly deeply discharged using most of its capacity. The term is traditionally mainly used for lead–acid batteries in the same form factor as automotive batteries; and contrasted with starter or 'cranking' automotive batteries designed to deliver only a small part of their capacity in a short ...