I purchased an Anker PowerCore in April of 2021 so that I could work from my laptop on a trip from Indianapolis to Hilton Head. The PowerCore was AWESOME enabling me to work a full day and still have power available to recharge my travel companions' devices. I had used the PowerCore for about 1.5 years when it suddenly stopped charging my devices. I paid $149 for it and hated that I might have lost that expensive accessory. I reached out to Anker Customer Service and within ONE day I was contacted with some troubleshooting suggestions. When i responded that none of them worked, Anker IMMEDIATELY entered an order for a replacement. I received the replacement within a few days. WOW!! The customer service and immediate responses to my emails (there were six exchanges in a very short period of time) were OUTSTANDING. I now have my favorite Power Bank back in service. Thank you so much ANKER CUSTOMER SERVICE AND TECH TEAM!!!