Looking for a batteries eliminator solution

I have some devices that consume a lot of power and are powered by batteris. I was looking for a solution to eliminate batteries and here is what I found available in Romania

ADAPTOR BATERII, 4XAA, 4XAAA, FIR L 3 M – Homelux.ro

Inlocuitor pentru baterie AA, MPM, 4.5V, Alb – eMAG.ro

1 Set AAA AA Battery Eliminators USB Port Power Supply Adapter Wire Cord Instead of 2pcs 1.5V AAA/LR3+AA LR6 Batteries – AliExpress 44

EU Plug 10-In-1 AA AAA Battery Eliminator Replace 2x 3x AA AAA Batteries Power Adapter Fit For Radio Electric Toy LED Light – AliExpress 44

battery eliminator set aa aaa – Buy battery eliminator set aa aaa with free shipping on AliExpress

inlocuitor eliminator baterii – Căutare Google