Yeah that is Normal, 90% of the PLB 40 is 36Ah or 460.8Wh, So your numbers are correct, In fridge mode at 4*c that is a Crazy amount of power draw, using my 47L fridge at the same temps it will use less than 18Ah to 20Ah per 24 hours, Ever since Dometic stopped using the Danfos Secop compressors...