Save types
Save Types
GBA cartridges do not all save the same way. Knowing which method a game uses matters when you replace a battery, back up a save, or run a title from a flashcart that must emulate the right save chip.
The main methods
- Battery-backed SRAM. A small chip holds your save powered by a coin cell soldered inside the cart. It is fast and simple, but when the battery dies the save is lost. Many early GBA games use this.
- FRAM (ferroelectric RAM). Behaves like SRAM but keeps data without any battery, so it never suffers from a dead cell. Common in later carts.
- Flash memory. Larger, non-volatile storage used by games needing more save space; also batteryless.
- EEPROM. A compact serial chip, batteryless, used where only a little save data is needed.
Why it matters
If your save vanishes every time the cart loses power, it almost certainly uses battery-backed SRAM with a dead cell. FRAM, flash, and EEPROM carts hold saves indefinitely with no battery at all.
Flashcarts must declare the correct save type per game; picking the wrong one means saves fail silently or do not persist. Tools like GBA Backup Tool, or the save manager built into carts such as the EZ-Flash Omega, can dump and restore saves so you keep a backup on your computer regardless of the underlying chip.