By PETER SVENSSON
Associated Press

The world’s largest trade show for consumer electronics starts Monday in Las Vegas with about 2,700 exhibitors.
One company attacking the recycling angle is Z-Power, which has developed a battery technology that it hopes will replace the lithium-ion batteries that power today’s laptops and cell phones.
Its silver-zinc batteries will show up in laptops from a “major” manufacturer in the summer, according to the Camarillo, Calif., company’s chief executive, Ross Dueber.
Lithium-ion batteries are recyclable but contain little recoverable material. The metals in Z-Power’s batteries will be recoverable, Dueber said, and with a precious metal like silver in them, there will be a strong incentive to do so. The capacity should be 20-30 percent higher than lithium-ion laptop batteries. The company is also in discussions with cell-phone manufacturers.
PC makers have already come a long way toward making their products recyclable, said Jeff Ziegler, chief executive of Austin-based TechTurn Inc., which processes millions of used computers and other gadgets every year for recycling or reuse. Manufacturers have cut down on the number of different materials that go into their products, simplifying recycling a great deal. They’ve also cut back on lead solder and other poisonous components.
But as yet, only a few manufacturers, like Sony Corp., take responsibility for recycling their products. Just 12.5 percent of U.S. electronics waste is offered for recycling each year, according to the Environmental Protection Agency, and much of that is dumped rather than recycled.
Also at the show, manufacturers are expected to trot out computers, especially laptops, that meet the EPA’s new, tougher Energy Star 4.0 power consumption requirements, which went into effect in July. The specification now sets maximum levels for power consumption when the computer is on but idle — previously, Energy Star dealt only with the ability to enter “sleep” mode.
There won’t be many desktop computers qualifying for the Energy Star rating — their power consumption is growing, with many now hitting 400 watts. Marvell Technology Group Ltd. will be demonstrating chips for power adapters that it says can curb that trend, by convert alternating current into the direct current in a more efficient way, potentially power consumption by half.
The Consumer Electronics Association, the organization that also puts on CES, estimated last year that consumer electronics, including home computers, consume 11 percent of residential electricity in the U.S., more than doubling its share in 10 years.
Television sets are another big power draw, and will become more so as analog TVs are replaced with high-definition sets. Though more energy efficient per inch of screen size, their larger size more than makes up for any gain in efficiency. Plasma sets in particular easily draw 400 watts, or as much as four older tube-type TVs.
A much more power-efficient screen technology will be on display at CES: Samsung Electronics Co. will be bringing a 31-inch TV made of organic light emitting diodes, or OLEDs. For now, however, the technology is much too expensive for the mass market, and there’s no word on when or if Samsung plans to sell the screen. Sony has announced an 11-inch OLED display for $1,700.
Cell phones, while hardly power-hungry, are quite wasteful: Nokia says two-thirds of the energy a charger uses is drawn when the connected phone is already fully charged. GreenPlug of San Ramon, Calif., will be previewing a solution to that problem, a universal power adapter that “talks” to gadgets to determine their energy need. Apart from cutting wasted electricity, GreenPlug aims to eliminate the need for a different adapter for every phone, MP3 player, and other portable gadget.
Getting other manufacturers to make their products compatible with the GreenPlug hub looks difficult, however. That points to part of the problem with the consumer electronics industry: innovation is happening in a lot of corners, but no one player is big enough to solve all the problems.