This post is for MR-3040 owners who want to know about it's measured power use.
I measured the power used by the USB line for about an hour. Starting with a full charge.
The current flow stayed between 0.22 & 0.24 A during that time.
The battery showed a full charge (green LED) and no charge current, with the MR-3040 turned off. (In charge mode).
So, the power used during the test, wasn't coming from the battery.
The USB tester has shown expected results when charging and running other devices.
But, might not be super accurate. It is a mass produced $2.99USD Chinese made item.
Product link to Amazon Reviews etc.
