HP laptops to sport long-lasting 'Enviro' batteries

Hewlett-Packard early next year will begin offering a new line of "Enviro" batteries for laptop users who want to upgrade to longer-lasting and more sustainably designed batteries.

HP and Boston Power have been testing the Sonata lithium-ion batteries for three years. The batteries were designed specifically for laptop use. After three years of use, the batteries will be able to keep 80 percent of their initial charge.

Laptop battery time typically starts to drop significantly after 150 or so charges, or cycles. Boston Power says that its batteries can be charged 1,000 times and get "like new" performance.

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