At CES 2025, we checked out Lenovo's new eco-friendly wireless keyboard, which ditches traditional batteries in favor of a photovoltaic panel.

Among the many laptops and desktops that Lenovo announced at CES 2025 is an intriguing peripheral: the Self-Charging Bluetooth Keyboard. This unique productivity keyboard ditches the traditional battery, instead utilizing solar and ambient light to charge and store energy.

The Lenovo Self-Charging Bluetooth Keyboard might seem like your run-of-the-mill keyboard, but it comes with a party trick that might just save you a buck in the long run. Using advanced photovoltaic technology and fast-charging supercapacitors, the keyboard actually harnesses ambient light to store energy, eliminating the need for disposable batteries.

  • howrar@lemmy.ca
    12·
    1 day ago

    Unlike conventional batteries, supercapacitors have an exceptionally long lifespan, lasting hundreds of thousands of charge-discharge cycles, whereas lithium batteries typically last only five years or less.

    So, what’s the conversation rate between charge-discharge cycles and years?

    • Flipper@feddit.org
      11·
      1 day ago

      It doesn’t say what type of capacitor is used, but electrolytic capacitors can basically be charged and discharged indefinitely. They don’t wear down . However they age based on temperature. The ones at my work have 2000h @ 105°C. For every 4 °C coolor the lifetime doubles as a rule of them.

    • Isoprenoid@programming.devEnglish
      1·
      21 hours ago

      It says in the article

      Unlike conventional batteries, supercapacitors have an exceptionally long lifespan, lasting hundreds of thousands of charge-discharge cycles, whereas lithium batteries typically last only five years or less.