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Bullzeyebill said:
Will KL4 be able to run on 9 volts (E2, E2e with 123 extender)? Bill
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I am hoping that this will not be the case but I don't know one way or the other. It seems to me that the KL5 will have to work on 2 or 3 cells to be compatible with likely hosts. This will require a buck/ boost circuit which to my knowledge is less efficient than either a strictly buck or boost circuit. The KL4 on the other hand will only fit on the E series which to date is limited to one or two cells. A 5 W can't be run at full power on one cell so that narrows it down to 2 cells only. If that is the case, a buck circuit can be employed which will be very efficient, IMH(but limited)O. The KL1 also had to play both sides of the Vf due to possible 1 and 2 cell hosts. The KL4 is uniquely suited to be strictly a boost circuit. On the same line of reasoning, the KL6 being slated for the M3 and possibly the M6, for those who don't mind the combo, can be strictly a buck circuit which I have been led to understand can be very efficient. Of course I have no idea of what circuits are being used and SF hasn't bothered to ask me for my $.02.
As to what SF LED light to get, I would suggest the KL1/E1e for now. You have a great 1W luxeon in a nice small package. This package deserves to stay together and I think you will want to get an E2e with and for the KL4 once they come available. In the near future, you will have a 1 Watt 1 cell and (Edit) 5 watt 2 cell both with good run times and scaled by power. If you need longer run time with less light output, you can always throw the KL1 on the E2e.
- Don