Hello everyone. Now iI know what caused my tablet to consume battery so quickly.
All through sd card. When I pulled it out, the tablet lost 4-5% of energy per day in sleep mode.
Interestingly, when I inserted a 32GB card, it was ok.
However, the 128GB card resulted in a 30-40% reduction in battery life per day.
I do not know if it's related to the manufacturer or card size.
The 32GB card is sandisk. 128Gb card is Samsung.
Both are microSDHC class 10 cards.