Some reviews say the indicators are difficult to read. They must have changed this in the latest versions. Mine was red when plugged in with no battery. Green when plugged in and charging, with red lights to indicate its status. I think the pictures are self explanatory and the manual doesn't really tell you if the functions work for both motorcycles and cars. If it works and does a quality job I'd say it's worth it. The time will show. will report. I report - the device I've owned for a few months seems to be working and charging perfectly. Maybe I would have liked it more if it had more ads and options. I'm a tweaker and I love to play. This is a set and is manufactured without adjustment.