Can we use Lithium AA cells in Fenix LD12 Flashlight?
Fenix LD12 Features a CREE XP-G2 (R5) LED.
- LD12 Flashlight is a 125Lm LED based Flashlight powered by one single AA 1.5V alkaline cell.
- The same LED is found in the 215lm LD22 (and hopefully the same constant current protection) powered by two AA 1.5V cells (3V).
Fenix Flashlights are protected by a Constant Current LED driver circuit [source: Fenix catalog].
Energizer L91 Ultimate Lithium AA cell datasheet:
- 1.5V (1.8V out of the box)
- max discharge: 3A continuous (5A pulse)
--> To know more about these cells have a look at budgetlightforum.com user review here
Is it safe to use one Lithium AA battery to power LD12?
- Energizer Ultimate Lithium Cells (L91) are 1.5V Cells (1.8V with no load, out of the box, wich is safe as the LED can run with up to 3.1V power source)
- These Cells can provide "up to" 3A but will NEVER burn the LED as the Constant Current driver will do its job.
But will it work with LD22?
- 2*1.8V=3.6V which is higher than the 3.1V of the LED, the constant current driver should limit voltage to keep current at a fixed threshold, but i don't have an LD22.
- There SHOULD have no issue, but who will try?