Our new Galaxy S3 phone has a removable battery. So rather than carry a charger or a cable to plug into a wall outlet, we carry an extra battery. But most smart phones and tablets don’t have this option.

For these, we tried out “MyCharge,” a battery pack that has different connecting cords permanently attached.  Every kind of cord you might need to plug into the charging port of a phone or tablet is attached to their most expensive charger and a couple of the most common cords even with their cheapest charger. The battery pack itself is about half an inch longer than a phone and about twice as thick.

There are four kinds of MyCharge products, ranging from $28 to $89. The top of the line unit charges the greatest variety of devices and provides 27 hours of extra charge. The cheaper versions charge for four hours and have two connecting cords.

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