Realme has now reportedly registered new batteries with the TUV safety authority. The unusually high rated and typical capacities of the two new power-packs have resulted in speculation that they are destined for this OEM's upcoming first-gen tablet. Should this be the case, it seems the device might have different versions, one with slightly more battery life than the other.
https://www.notebookcheck.net/Realme-Pad-new-certifications-hint-at-2-different-battery-SKUs-for-the-upcoming-tablet.554027.0.html