Bosch Pro 12V Battery Tester

Battery tester for the 12V Bosch Professional batteries.
Just push in, the LCD will turn on and tell you the voltage and remaining capacity.

Parts
2 Faston/crimp-on flat terminal connectors, 0.25"/6.3mm wide. I used the red for 0.5-1.5mm² wire, but the blue ones will probably work as well, the crimp end is cut off anyway.
A cheap LCD battery capacity meter which has a ~58x28mm mounting hole. I got it from one of the Chinese websites for around €3. (A visual search on Google with the picture will find it, also available in blue or white LCD).

Printing
I printed in Formfutura AppoloX ASA with 0.6mm nozzle and 0.25mm layer height, 2 perimeters 20% infill.
Add some support where the terminals are mounted, otherwise no supports needed.

Assembly
Clean up the supports. Do not cut away the 'posts' near the slots, this is extra material to fix the connectors in place (red arrows in photo 6).

Cut the crimp barrel from the Faston connector but leave about 1 to 2 mm.
Solder the wires to the Faston connectors. Push the connectors fully through  until the barrel stops it against the top of the slots. 
Use a soldering iron on low heat to melt the plastic posts over the connectors to fix them, I used a bamboo skewer to push the soft plastic in place.
Check in the battery holder that the terminals are aligned straight and the batteries make easy contact.
Adjust with a needle nose plier and some heat from the soldering iron when necessary.
The LCD meter pushes in from the front. Connect the wires to the meter. Glue the back cover on.

Settings on the LCD meter
2- L 03 (Lithium, 3 cells)
4- No changes (default settings are used) 
5- ON (Backlight always on)
6- No changes (low alarm setting, not used)
7- OFF (Alarm sound)

As always, any feedback for improvement is much appreciated.

Bart