Specification: Brand new Opening Size: approx. 45*26*18mm Static Input Current: 5-25mA,the lower the battery voltage,the smaller the current. USB Output 5V/2A(max), two USB port total is 2A(a USB setting for Apple recognition, a USB setting for Android recognition) USB
step down efficiency is up to 96% (because of the synchronous
rectification circuit, the buck conversion efficiency is high and the
heat is low. 8 segment power resolution: 10% 25% 40% 50% 60% 75% 90% 100% The accuracy of the voltmeter is about 2% Working Temperature: -10~+65℃ Working Humidity: 10-80% (no condensation) Feature: LED lead acid battery BMS capacity indicator voltage meter. Can display the battery voltage, battery power, you can also plug directly into the phone or the 5V equipment charging. Suitable
for all kinds of outdoor power, mobile power, instrumentation and other
equipment additional battery power voltage display and additional USB
to charge the phone and other functions. Uses synchronous rectification step-down chip scheme, with little heat, energy saving and environmental protection. Small size and light weight. Fine workmanship and good performance. Easy to read. Easy to use. Durable in use. Package included: 1 x Battery Capacity Indicator