This is a charge indicator that can be stuck onto any battery and can then be used to indicate whether the battery is charged or not. It works via a sliding mechanism that slides between two halves - one half indicates fully charged whilst the other half indicates empty. You'll notice in the photos that this indication was printed in three colours (green for full and red for empty) however, if you don't want to print yours in 3 colours then you can print it all in one colour because there is a cross and a tick in each half.
The indicator is printed in 3 parts which means that it requires assembly. This is easy as all you have to do is insert the slider into one half and then glue the two parts side-by-side onto the battery so that the slider can move between the two halves. (if you glue the two halves directly together there is a chance you will glue the slider so it cannot slide). For adhesion you can use double sided tape or normal multipurpose glue.
The indicator was printed using our own PLA filament. You can buy some here: http://www.3dexfilament.co.uk
Layer height was 0.1mm and infill was 100%. Print time is approximately 7 mins.
Layer height: 0.05mm - 0.25mm (probably go for a low layer height for better fit)
Infill: It doesn't matter but 25% would suffice
Print Speed: 50mm/s - 150mm/s
Print time: 7 mins