so i found a very old headlamp. it still had a halogen bulp in it. so i figured out i would mod it with a xp-g2 R5 A1 and TIR optics.
it ran of a 4.5v (3LR12 size) battery. i decided to throw that away and use 3 li-ion batteries in parrallel to provide higher runtimes.
i also installed a 1A Li-ion charger from DX to charge them over USB
to run the xp-g2 i stacked 3 AMC7135s to provide the led around 1Amp.
but now my problem. when i turn the light on it turns on for around 2-3 seconds and than starts flashing.
what could cause this flashing?
and what could i do to stop it?