Replace the LR1130 with a AAA battery for the QST express caliper I got from Aliexpress. the battery is fiction fit with the bend on the side of the battery compartment.
You will need: wires, tinfoil, some type of glue and a multimeter (make sure the positive and negative is not making contact! very important)
Route wire in the hole to the channel on the side and along the bottom and to the other end and add foil for contact. Spacing is abit tight, so take your time with it.

The lock screw and the battery cover screws will be tighten at the same place after

PS: Hot glue is your best friend here, use a flathead to smear the glue will help alot

Other generic brand might work as long as the measurement matches:
Screw center is 2.4mm from the edges. The battery cover is ~17.3x12.8mm. The top edge of the battery cover to the top side is 5.5mm

2023/07/07 update: added a STEP file for remix