Is it normal for my Dreame L10 Prime to lose 100% battery overnight when the dock is unplugged?

My Dreame L10 Prime was at 100% charge, but I accidentally switched off the power to the dock station. I didn't use the robot at all, yet when I checked it the next day, the battery was completely dead. Is this expected behavior for this model, or should it be able to hold a charge for longer than 24 hours while sitting on the dock?"

Yes the battery is drained at stand by mode like mobile