BatteryEdge.com, Inc.

Stocking up on canned goods and candles is one thing; batteries for the radio is another—but what about spare batteries for your laptop? Fortunate, preparing for emergencies needn't break the bank.

BatteryEdge.com, a Reno, Nev., based online retailer of replacement batteries for most laptop and notebook computers, including the MacBook Pro, offers brand-new, 100% guaranteed compatible batteries for most popular computers at up to 70% savings.