Dual USB 5V 2A Car Voltmeter Voltage Meter Panel 12V-24V 3S-7S Lithium Battery Capacity Indicator Power Tester Li-ion Lead acid Dual USB 5V 2A Car Voltmeter Voltage Meter Panel 12V-24V 3S-7S Lithium Battery Capacity Indicator Power Tester Li-ion Lead acid Description: This product is fully functional, you can display the battery voltage, battery power, you can also plug directly into the phone or other 5V equipment charging. This product is 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. This product uses synchronous rectification step-down chip scheme, low heat, energy saving and environmental protection. This product is compact in structure, making full use of space and reducing costs. Product parameters: Static input current: 5-25mA, the lower the battery voltage, the smaller the current. USB output: 5V/2A (a USB setting for Apple recognition, a setting for Android recognition) USB buck 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% voltmeter accuracy: about 2% working temperature: -10 ~ +65 C Working humidity: 10~80% (no condensation) Opening size: 45 26 18mm Package Included: 1pcs * Dual USB Port LED Digital Voltmeter Socket Plug Universal Voltage Meter for Mobile Phone Smart Charging Adapter _x000D_