[quote name='botticus']That's weird, cause my Wavebird started blinking erratically the one time I've had to change batteries.[/QUOTE]
That would just be the voltage fluctuating because the batteries were just on the brink of having sufficient voltage and not. Probably it had sufficient voltage to "start" but as soon as it did it would draw too much and die, and kept repeating ad infinitum. The Wavebird has no indicator, save maybe some slight dimming of the light. Too bad, the GBA switched from green to red when the voltage dropped enough, though that's not a true indicator of battery life, especially for rechargables which start out with a lower voltage than normal batteries but hold it much longer.