Never leave the house without a charge again with ReTrak's 4000mAh power bank. The ReTrak 4000mAh power bank connects with all USB devices so that you can revel in the stress-free feeling of knowing that they will stay charged no matter where you go. The 4000mAh power bank is perfect to have with you when you want to spend a day at the beach without worrying about your phone or wireless speaker dying. The 4000mAh power bank is also great for camping, hiking, and many other outdoor activities where relying on an outlet for power isn't an option. Do you have a long commute to work on public transit? With ReTrak's 4000mAh power bank, you can do business from your phone while you ride and feel confident that you'll stay charged until your final stop. The 4000mAh power bank fits in your pocket so you can easily carry it with you wherever you need to go.

Not only is it compact and convenient, but this 4000mAh power bank will give you device a full charge so you can guarantee it will last you through the whole day. An LED light will indicate when power is low, and the 4000mAh power bank turns on and off automatically, so you never end up without power when you need it.

Our mission is to redefine consumer electronics by designing retractable accessories that can be carried easily on-the-go. We’re here to add an element of simplicity to your lifestyle – so you can stay connected whenever, wherever. ReTrak is proud of every minute and every headache we save you from untangling pesky cords.

The industry standard for 4000mAh power banks and electronic products is 1 year, but we're not like those other guys. We built our products to last as long as you do, which is why we offer a lifetime warranty for US purchases.*

*Some exclusions apply.