Duracell, the #1 trusted battery brand, is proud to offer the 3-day 10050 mAh Powerbank, as part of Duracells trusted lineup of power products. Can deliver up to three extra charges on your smartphone.* *Based on internal testing vs. iPhone 8. Results may vary by device and usage conditions. Dual charge technology to simultaneously charge both the powerbank and USB-powered device. Equipped with 10 important safety features to prevent over-charge, over-discharge, and over-heating. Style: 10050 mAh Duracell Powerbanks are designed to provide you with a reliable source of power that you can take anywhere you go. With fast charge technology and high capacity, Duracell Powerbanks help prolong the battery life of your smartphone or other USB-powered device so you can keep using your device without interuption. Packed with 10 safety features for safe, worry-free use.