USB tester IV - measurement of voltage (3-9V), current (0-3A)

If the USB voltage and current detector does not have a suitable load, it is impossible to measure the maximum output capacity of the source or whether it reaches the rated current only with mobile phones and other non-constant appliances! It can be said that it is almost impossible for customers to find a constant power load of only 1A or 2A in everyday electrical appliances! To meet the needs of our customers, our store has customized a load tester (ie aging device) that can be rated for 1A or 2A discharge. The combination of the two can accurately and intuitively judge whether the output capacity of the power supply/mobile power supply is qualified!