Thank you guys for these tips. Do you know anybody here who can help me with this issue? It looks a bit difficult for me.

I have a python script which parses the wallet.dat file in 1 minute and prints out all balances and adresses, its 50USD, or 0.4 ETH, interested?

does it check for balances online or on your local node?

it works quickly, check balance online. Takes 1 minute for my file. thank you bartek.

we can close this thread.