system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do video game cartridges and motherboards need a battery to maintain save data but a simple SD card does not?
gpt
Motherboards use the battery to keep an internal clock running when there is no power.

Old game cartridges used volatile memory. Like the RAM in the computer. It needed constant power to keep the data good. This was from before when the flash storage was easily available.