ransley wrote:

I have a few, actualy maybe 20, They are comming from China by the
boatload and are 1.50 US here with 3 batteries, but more Leds dont
mean more light, this group of chinese lights is maxed out at maybe 8
Leds, for 19 Leds you really need double the voltage,


Not if they are wired in parallel.

19 vs. 9 LEDs gives twice the illumination but half the battery life.
I can live with that.