Datasheet

RTC Backup Battery

The Ultimate GPS module does not have a built in RTC battery, but a coin cell is provided, simply

place the coin cell inside the holder, with the + facing up, thats it! The battery will last 7+ years

The real time clock will automatically set itself to the correct UTC time as soon as the GPS gets its

first correct signal from a satellite. Without the battery, if the GPS loses power, it will forget the time

and has to wait till it gets signal again to reset. But, if you have the battery in, it will keep time even

after a power loss. We recommend it highly!