The LED bulb is rated for 40, 000 hours of use and can last over 15 years.
Less than three hours of use on a single charge is still the norm.
It runs all day and all night certainly living up to the advertised 10 hours of use.
Despite the heft, the PlayUp's battery is rated for 10 hours of use, which is disappointingly just under half of the 360's replaceable cell.
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Clearly the Web draws hours of use, although with multitasking it can be difficult to say what it is taking eyes and ears away from.
We managed a whopping 17 hours of use on one battery.
ENGADGET: Tritton Warhead 7.1 Wireless Surround Sound Headset for Xbox 360 review
Tritton rates them for about 12 hours each, but we managed a whopping 17 hours of use on one battery playing music with voice monitoring enabled.
ENGADGET: Tritton Warhead 7.1 Wireless Surround Sound Headset for Xbox 360 review
Poloxamer 188 has already been tested in humans with sickle cell anaemia and was found to be safe in the short term - 24 hours of use.
The new BlackBerry 10 software is a serious attempt at marrying these two feature sets, and after a few hours of use, it looks like it succeeds.
The 2100mAh battery powers the unit for about 16 hours of use (60 hours on standby) and can be charged to 70 percent capacity in about an hour.
The PX3s also happen to be the Turtle Beach's first headset to sport a internal lithium polymer battery, reportedly scoring the user 10-15 hours of use per charge.
ENGADGET: Turtle Beach XP500 and PX3 gaming headsets hands-on
We also got an early glimpse of battery performance from Intel's incoming Haswell processor: you can expect to glean 10 hours of use in tablet mode, which is on par with many lower-powered tablets already on the market (think: Atom, ARM, et cetera).
As headsets go it feels comfortable, lighter than many gaming headsets, but the battery is clocked for two hours of full use or up to eight hours on a "typical usage profile".
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This savings will come through a reduction of 5.2 million kilowatt hours of energy use annually, which is the equivalent of preventing 3, 700 metric tons of carbon emissions.
It will weigh 2.95lbs and offer up to six hours of continuous use, TechSpot reports.
There's also a built-in rechargeable battery for about 1.5 hours of portable use.
Often, childhood obesity is attributed to a " toxic environment, " filled with endless hours of computer use and video game playing.
The MiFi Liberate, which offers access to 4G LTE speeds, boasts a powerful battery that offers up to 11 hours of continuous use.
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We've had our screen on more often than not this evening and we're at about 60% battery life after perhaps two hours of cumulative use.
After a certain threshold of about 24 hours of continuous use, the bill accumulated at by-the-hour or by-the-minute rate typically exceeds the cost of otherwise paying a flat daily rate on a traditional car rental.
It's called the Pleo Reborn (or "RB" for short) and the primary features are these: a lithium-polymer battery good for two hours of continuous use, a much tougher hide, and an RFID "sense of smell" that lets it interact with a variety of optional accessories to "eat, " take medicine for virtual injuries and learn new tricks as you go.
ENGADGET: Pleo Reborn detailed by Innvo CEO, one lucky fan finds and buys the tiny dino (video)
In 10 hours of daylight charging the unit gathers up to 20 hours worth of battery power for use in the low-power 8 LED mode, or 10 hours of life if used in 16 LED mode.
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The LED itself has an expected life of about 50, 000 hours (six years) of continuous use.
Others do so voluntarily to lower the energy use during hours of peak demand in order to avoid blackouts and costly repairs of their equipment.
The rechargeable battery lets you take your music with you around the home, with up to six hours of continuous playback depending on use, settings and conditions.
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SpareOne, designed to be an ultimate safety and communication device, provides up to 15 years of battery life when stored unused (off, with plastic tab inserted) or 10 hours of talk time when in use.
Designed to give you surprisingly big sound in a portable package, the Logitech UE Mobile Boombox includes a rechargeable battery that delivers up to 10 hours of music, depending on use, settings and conditions, and can even double as a speakerphone for voice or video calls.
ENGADGET: Logitech unveils new Ultimate Ears range, includes $99 mobile boombox (video)
However as an example, one NHS authority, NHS Tayside, argued it provided comprehensive out-of-hours cover in Kinloch Rannoch, partly through the use of NHS 24 and doctor, nurse and ambulance services based in Pitlochry.
At times of peak demand, electricity is made largely from natural gas in turbines so inefficient that saving 1% of U.S. electricity, including peak hours, saves 2% of total natural gas use and cuts its price 3% to 4%.
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