I'm not an electrician at all, but inside that charger, something is happening to make it change from red to green. And it seems to me like someone with basic electronics knowledge could probably kludge something up so that instead of one light that changes colors, a second light could come on when it's green. (Or when it's red, either way.)
The chargers are cheap, around $5 if I remember right. Maybe you could get a spare and find someone who could take it apart and add a new light?
The chargers are cheap, around $5 if I remember right. Maybe you could get a spare and find someone who could take it apart and add a new light?