LiPo battery charger/connection and RTC

If I connect a LiPo battery to the batter connection, will the board use that as a power source for the whole system? Will it power the RTC if the board is “shutdown”?

A64 boards can be powered via battery. The only problem with M64 is that it uses some strange connector.

What about the RTC? Looking at the schematic, there is a VCC-RTC coming off of U6, which also connects to the battery. The power On/Off button is also connected, as well as various other power related things. I’m guessing U6 is the power management chip. It would nice if there was a datasheet available for it.