Features: and high quality.1, This product is fully functional, you can display the battery voltage, battery power, you can also plug directly into the phone or other 5V equment charging.2, This product is suitable for all kinds of outdoor power, mobile power, instrumentation and other equment additional battery power voltage display and additional USB to charge the phone and other functions.3, this product s synchronous rectification step-down scheme, low heat, energy saving and envmental for protection.4. This product is compact in structure, ing full of space and reducing costs.Specifications:s1, Static input current: 5-25mA, the lower the battery voltage, the smaller the current.2, USB output: 5V/2A (a USB setting for recognition, a setting for recognition)3, USB efficiency is up to 96% (beca of the synchronous rectification circuit, the conversion efficiency is high and the heat is low.4, 8 segment power resolution: 10% 25% 40% 50% 60% 75% 90% 100%5, The accuracy of the is about 2%6, Working temperature: -10 ~ +65 ° C7, Working humidity: 10~80% (no condensation)8, Opening size: 45 × 26 × 18mmPackage Includes:1 X Dial Battery Panel Meter with USB outputNote:Please allow 1mm errors due to manual measurement.Due to the difference between different s, the picture may not reflect the actual color of the item.