Meritline offers high-quality back-up batteries that can be used to charge cell phones or other devices that can be connected to a charging station via a USB cable. The most popular back-up chargers can be powered-up by being plugged into a standard electrical outlet. They can then be carried with a phone or other device and used to extend the phone's battery life or kept on hand to be used in case of emergency. This can be an invaluable tool for anyone who travels frequently and needs to extend the battery life of their phone, MP3 player or tablet.
