As promised here are the pics... Would have posted sooner but could not find thread... Then I checked my posts...DOH...
Here is the unit out of its shrink wrap... You have to cut the box about to fit it in... Used Dremel...
No need to solder directly to board, just to the pins the module plugged into...
Fitted JST connectors so back can still be disconnected...
Fitted Led, button and switch on top... Was sanding balsa before I took pics....
Hope this helps your installation.... Questions welcome...
Here's the battery mod with 'smartie parts' USB...