3D Printed Replacement Battery for GSM/GPS Tracker

So far not had very good results with the GSM/GPS tracker. A lot of it comes down to not being sure the thing is even turned on and not convinced about the batteries. With this in mind i have looked to replace the existing replaceable battery with a 3d printed dummy that can be hooked up to another lithium cell such as a 18650. To keep things simple i removed the contacts from an existing battery so that i would not have a problem getting things to line up.

Still needs wiring up etc but a good start and fits. Will need to cut a small hole for the wires to exit the case, or perhaps make a new back cover :-)