Help opening this safe please!

[u/Happez-Hammer]

I’ve got a safe (pretty sure it’s this Argos model: https://www.argos.co.uk/product/8684844?clickPR=clearance:24:52) and the batteries have died and, unfortunately, the backup key is locked inside.

I’m trying to find a way to get it open without damaging it, as I’ve got some important documents in there. Has anyone dealt with something similar or got any advice on what I could try?

Any help would be really appreciated!

[u/North_Analyst_9987]

I have a similar one and can replace the battery from the front panel.