Marius Kintel schreef: > On Aug 26, 2008, at 6:47 PM, Peter Korsten wrote: > >> Hmm, isn't there normally a resistor between the LED and the power >> source? >> > Such batteries have such a high internal resistance that you don't > need the usual current-limiting resistor in addition. Cool, one learns something new (about electronics) every day. Thanks! - Peter