The Powermax™ Power Bank has the highest power capacity out of all portable power banks in the market. Effectiveness, practicality and high quality are three big qualities that we preach as a company. As you can see, the Powermax™ Power Bank is the epitome of what we pride ourselves on. Likewise, our customer service team strongly believes and adheres to the three qualities and provides excellent service. The customer-centered shopping experience has always been our goal and we pride ourselves in the comprehensive policies that have put us in a realm above and beyond our competitors.