I'm just about to bin one - got me a flat battery in five days, at least I suspect it was the culprit - nothing else is different ...Buy a new ELM327 scanner? They are very cheap.
I have one like the first link but not bought from that ebay seller. I've used it once with torque lite to read and clear a code and it worked fine. The power light comes on even with the ignition off so there must be a small current draw.So many options! Anyone used any of the 3 eBay examples I posted specifically? Just looking for dud avoidance at this stage. Oh, and nothing that draws so much as a pico-nad of juice from the ever precarious CLS55 battery when the ignition is off!!!