By how much does się quest max settings design barteru?

Hello so i just ordered the bobovr batterypack headstrap and wanted to download side quest and put max settings 144hz max resulution and lvl 4 CPU/GPU overclock i just wanted to know without any battery packs by how much quicker does the battery drain and last thank you very much for any answers i have the normal quest 3 and on its own IT roughky lasts 2hours 20minutes