Specifications:1. Brand: Xiaomi2. Model: PB4003. Type: Bidirectional Rechargeable Battery Charger with USB ports4. Input: 5V 1A.5. Output: USB: 5V 0.5A                   AA: 1.5V 550mA*4                  AAA: 1.5V 225mA*46. Charging time: 4 hour(4* ZI5 Battery)7. Working temperature: 0-40\u21038. Weight: 60g.9. Sizes: 77*63*24.5mmFeatures:1. ZI5 rechargerable charger、 a charger with use port、 can become a powerbank.2. Four separate charging slots、 adjustable design、 can be free to charge 1~4 batteries.3. Seven kinds of safety protection、 protect your safety and the battery.4. It only need  4 hours to full charge 4 ZI5 battery.Note: All data are from laboratory、 may be different from the actual data.Package includese:1* Xiaomi  Rechargeable Battery Charger