Eachine Assassin 180 battery case adapter

Proprietary connector are always a bad thing, especially when you broke a couple of eachine assassin 180 racing drone, and you don't have anything that can use theirs (quite decent) batteries.
This is a case/adapter that can use the batteries easily, as they were supposed to be used: slide in and lock.
I've used (bended and glued) some nickel strips, commonly used for the DIY battery packs, but you can use any kind of metal sheet that can reach the contacts inside the battery's plastic case a