Few things of note. I put the engine on a powered track and it does light up but it didn’t move i didn’t do any further testing or tinkering. There are a few places that a small plastic piece ne3ds to be reattached as an end has broken off, very minimal. It appears that the tender has some corrosion. When I put batteries in you can hear the speaker come in and it sounds like it is marks a slight “Chugging” sound. Missing battery compartment on the tender.