Logitech has made it painless to reduce your energy consumption, and the key architecture and typing experience are unmatched in the competition. With the exception of a glossy black chassis that reveals fingerprints and scratches, we can find little to complain about in Logitech's K750 solar keyboard. In addition, Logitech claims the keyboard was designed to minimize its negative environmental impact. This makes the Logitech K750 Keyboard one of the most sustainable keyboards out there. So you no longer have to worry about batteries, power bricks, and charging cables. Your accuracy might suffer in the interim, but we actually found ourselves typing faster after less than a week of using it. The Logitech K750 Keyboard is a wireless keyboard that uses solar cells to keep a small battery charged in order to provide its own power. Logitechs Wireless Solar Keyboard 750 charges itself from any available light source and holds its charge for at least three monthseven in complete darkness. In practice, the key response is similar to that of an IBM ThinkPad laptop, so if you're used to typing on a regular keyboard, the K750 will be an acquired taste. The K750 uses Logitech's PerfectStroke key design that adds exactly 3.2mm of space between each key and uniform tactile feedback across the entire concave key surface. Of course, buying into the Unifying line basically limits you to the Logitech brand, but the company consistently earns our favor across its entire line of peripherals, including Logitech claims that a single 2-hour charge will retain power for three months in total darkness, or more if you remember to flip the on/off switch when you step away. Although the manufacturer states that the battery is not replaceable, I pulled out the carrier and discovered that the battery was a rechargeable ML2032 lithium button cell. The battery died after about 2.5 years of use.
That's standard battery technology, but the solar panels can also draw perpetual power from artificial light sources-in other words, you don't have to raise the keyboard to the sun for it to work the fluorescent bulbs above you will charge it just fine. Logitech K750 Wireless Solar Keyboard Works well.
The panels power the integrated ML2032 lithium manganese button-cell rechargeable battery that then pushes power to the keyboard. The standout features on the K750 are obviously the dual solar panels that sit on either side of the logo branding on top of the keys. This type of keyswitch also allows Logitech to reduce the thickness of the keyboard chassis to just one-third of an inch. Mechanical keyboards currently popular in the peripheral market, this input device uses scissor switches underneath that register key presses with a lighter touch, and give the additional benefit of low noise. With its low-profile keycaps and a glossy black mirrored finish behind them, the K750 solar keyboard looks more like a disconnected laptop keyboard than its desktop counterparts.
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