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Product Description original sigma 2600mAh Powerbank Bring a dead battery back to life with the sigma Power Bank. Equipped with 2600mAh capacity, this external power bank offers the convenience of re-charging your devices without the need of an outlet. Keep talking and playing for longer with this power bank from sigma . You ll never have to miss a phone call or lose a game because you run out of battery. The battery features an overcharge protection, over discharge, and short circuit protection, making it the most efficient and convenient power bank. With different connectors, it is compatible with devices having a micro USB port. Maximize your gadget�s features while you re on the move with the sigma Power Bank. Warranty&Return Policies If there are defective goods, please send back to us. We will replace them in the following order. Please note: � 1. Do not remove battery when charging . � 2. Do not place the battery stored in more than 45 �C high temperature environment or in fire,otherwise it may cause the battery explosion. � 3. Don t exert external force to the battery. � 4. Do not place the battery with conductor such as key, coins etc to avoid shortcircuit. � 5. Do not let battery be moist or put it in water. � 6. Suggest choosing original charger or performance reliable charger for charging.