Help from you electrical guru's pleeeaaase!

[nate80]

In your case the result will be not as bright but if the amount underdriven is too much they might not emit light at all, there is a way round this problem that is by using dimmable led';s - these are specifically designed to be tolerant of being underdriven.
The thing to remember is that you will have 300mm off the driver but up to 12V going into just over 5V of led';s so how well it will work will depend on if the driver has current limiting, if not you could get thermal runaway and burn the led';s out - I would leave them running in your test circuit for at least a few hours to make sure you don';t have to take it all apart at what could be frequent intervals.

I lightly soldered the LED';s in series via an mr16 driver and tested them for over an hour. They work perfectly. The driver doesn';t get at all hot. The LED';s don';t get that warm and they are super (eye burningly) bright! They properly sip power too. The battery voltage was almost the same after an hour as it was when I plugged the lights in.