Here's why this can be a problem:
* Battery Failure: Over time, the in-game battery can wear out or die completely. This will result in the loss of all your saved progress.
* No External Saving: The game does not have a feature to save to an external memory card, like the SD card used on newer DS models.
There's no workaround for this limitation.
If you encounter a battery failure, your only option is to restart the game from the beginning.
However, if you're playing the game on a Nintendo 3DS or 2DS, you'll be able to save progress on the SD card.
Tips for prolonging battery life:
* Don't leave the game running indefinitely: Turn off the game when you're not playing to preserve the battery.
* Avoid extreme temperatures: Don't expose your DS Lite to very hot or very cold temperatures.
Remember, this limitation is specific to the Nintendo DS Lite version of Lego Indiana Jones. Other versions of the game, like those for the Nintendo 3DS, 2DS, or other consoles, may offer different saving options.