what about this?
https://www.ebay.com/itm/Digital-USB-Tester-LED-Charging-Doctor-Voltage-Current-Meter-Power-Detector-New/292422812570?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D2%26asc%3D52569%26meid%3De696ead01e244c82a913b40db278abee%26pid%3D100005%26rk%3D3%26rkt%3D12%26mehot%3Dpp%26sd%3D282530004049%26itm%3D292422812570&_trksid=p2047675.c100005.m1851