Rapid Charge 3x Backup Battery | Power Bank for Phones and Mobile Devices [NOT ALL BATTERY CELLS ARE THE SAME] - LIKE MANY PRODUCTS, YOU CAN HAVE THE HIGHEST QUALITY & MORE EXPENSIVE COMPONENTS -OR- YOU CAN USE CHEAPER, SUB-PAR COMPONENTS TO GET THE COST DOWN SO YOU CAN HAVE A LOWER PRICE AND MAKE MORE MONEY. WE ONLY USE THE HIGHEST QUALITY, MOST TECHNICALLY ADVANCED COMPONENTS, INCLUDING THE LATEST LITHIUM POLYMER BATTERY CELL