Ideal for engineers, enthusiasts, and users requiring accurate charging diagnostics for smartphones, tablets, or USB power gadgets during repairs or optimization Engineered with protective and ABS housing, this portable USB current electricity detector deliver diagnostics for adapters, and mobile accessories through plug and play operational Perfectly sized for workshop, or home offices to charging outputs, troubleshoot battery drain without complex setups Maintenance with current / electricity visualization – the USB diagnostic tool for optimizing charging speeds and ensuring electrical across multiple gadgets Monitor charging efficiency in real time with this double port USB electricity current tester, featuring a bright LED display for 0-5A current and 3-9V electricity readings across two simultaneous devices