The expected battery capacity for a Samsung Galaxy Tab S7 device has been discovered, and it seems that a potential Galaxy Tab S7+ model will end up with a battery capacity of over 10,000 mAh. This is a huge step-up from the 7,040-mAh capacity of the predecessor Galaxy Tab S6.
https://www.notebookcheck.net/Samsung-Galaxy-Tab-S7-expected-to-sport-a-battery-with-an-enormous-capacity-of-over-10-000-mAh.466852.0.html