Discounted batteries for iPhones available now

Concerned about waiting for weeks to get a discounted replacement battery for your iPhone? Apple says they're available now, although initial supplies may be limited.

The tech giant's announcement speeds up Apple's initial projection that the replacement units, offered at the discounted price of $29, a $50 savings over the regular cost, would not be available until late January.

"We expected to need more time to be ready, but we are happy to offer our customers the lower pricing right way," said Apple spokeswoman Trudy Muller, who cautioned that "initial supplies of some replacement batteries may be limited."

Apple also launched a special Internet page for consumers to get more information about iPhone batteries and performance.