Battery exchange caused electrical problems

[PandaTrader]

Hi everyone,
I am confused. I had some battery problems. The battery was dead every morning and every time I parked the car for more than 30 min. So I knew the battery was shut and I had to replace it. I went to a local shop and they replaced the battery. They used a memory battery device, not sure what it is called. So when that unit is plugged everything electrical works. Central power lock, windows, remote key fob etc. Once the mechanic pulls out the memory device, alarm turns on and none of the electrical things in the car work.

Please help.