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work for samsung Galaxy s3 when the internal battery is low Great solution for travelling, hiking, etc. Test button on the back for testing remaining power Specifications:
Capacity: 2200mAh Battery type: Li-ion polymer Input: 5V 500mA Output: 5V 500mA
lights indicates how many power left
blk and white
blk and white
2200mAh External Battery for Samsung Galaxy S3