Look after your scale guys! Mine has initially shown "Lo" for a couple of weeks, indicating it's time to change the batteriy. So got my act together. Holy cow, weighed 81.1kg with the old battery, 81.6 with the new! Drank very little water, maybe 100-200 grams in between. So it's like one week of losing weight is "negated" just like that.
Wonder what the next obstacle will be...