GBA SP light flickering from red to green?

[Jorpho]

I was giving my GBA SP a whirl just now; I purchased it used, but never used it much.

I notice that the battery light seemed to flicker considerably: sometimes it would be red, sometimes it would be green, and there seemed to be no consistent pattern. This is after leaving it charging for a good long time; the light stays green if I play it while the adapter is plugged in.

Does this mean the battery is going bad or something? Is this typical of on older GBA SP?

[Blitzwing256]

sounds like your battery is losing its charge, might try replacing it, I THINK you can still order em from nintendo's website.

[Jorpho]

But if it was losing its charge, wouldn't it just stay red?

[retroman]

could just mean wiring in the lights is going bad...as long as it holds a charge who cares.

[Satoshi_Matrix]

I've experienced this myself with high drain games and especially with my flashcart. I don't think it means anything at all.

[Jorpho]

I've experienced this myself with high drain games and especially with my flashcart. I don't think it means anything at all.

I am indeed using an EZ-Flash IV. (I'm also using a headphone adapter on the charge port.)

Perhaps this is some sort of less-publicized feature of the EZ-Flash?

[Shellshock!]

Nah, it happens to mine too. It usually happens when the battery charge is in the middle of switching from good (green) to low (orange). It's like its status is borderline. Try turning the back light off or down and the sound off to see if it remains green, then turn it all the way up together with the back light to see if it switches to orange.

Also, flash carts use more power than regular carts.

[Zing]

Flashcarts are known for causing high battery drain. They could even just be drawing a lot of voltage, causing the red light indicator to come on even though the battery still has decent amount of power remaining.