Out of curiosity, when playing GBA games, how long does the battery last? I'm just wondering because on the Sueprcard, it would drain pretty quickly...

 

I'm pretty sure that minger was referring to the DS battery, not the SRAM battery in the 3-in-1. I haven't done any real testing, but the 3-in-1 doesn't seem to drain the DS battery any faster than the R4/M3 Simply.

The 3-in-1's SRAM battery is rechargeable, and it should charge wile you play the DS with the 3-in-1 inserted.