Of course you never forget to charge and pack your notebook, but what about all of those other electronic devices you just can’t function without, like your digital camera, MP3 player, and electric razor? Once the batteries drain, you’re out of luck until you can find a wall outlet or purchase more batteries. With the A4Tech portable USB battery charger ($16; www.ebay.com), however, you don’t have to subject yourself to the mercy of your powerhungry electronics while on the road. This inconspicuous device plugs into a USB port of your notebook and uses the notebook’s power to charge up to two AA or AAA nickel metal hydride or nickel-cadmium rechargeable batteries. Speaking of batteries, A4Tech’s handy charger includes two AA and two AAA nickel metal hydride rechargeable batteries. Green LEDs indicate the charging status of the batteries, and a built-in USB port lets you connect other USB devices or daisy-chain multiple chargers. But don’t worry about needlessly draining your notebook battery, the device shuts off automatically once the batteries are fully charged.
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