Hyundai 18V ion-li batteries are scarce and difficult to find. Einhell are widely available, so made this adapter to use einhell 18V batteries for my Hyundai tools. I print either with resin or filament.
To make the electrical connections i soldered a 1mm iron strip to a holder, that probably requires adjustment depending upon what it's available to you (see the picture).
There are multiple Hyundai ion-li batteries, those are for the HYBS tools
adapter.stl | 43.4KB |