Mastore 5000mAh Portable Solar Charger Battery Power Bank, Rain Resistant Dust-proof and Shock-Resistant Dual USB Port Output External Battery Backup for iPhone iPad Cell Phone Smart Phone Tablet Camera etc.-Master T011 (Blue)

This seems like a really good product, however the first one failed within a few days. It just wouldn’t hold any charge at all after 2 or 3 uses. I was careful not to leave it in the sun when I wasn’t using it to avoid over charging... yet it still packed up.The seller was really good and responsive and sent a replacement out really quickly. However this one lasted roughly the same length of time again. I can’t be bothered to ask for a third or for my money back now, just save yourself the time and effort and don’t buy this.