I have been using my Fenix TK20 a lot since a bought it. Usually with Energizer Industiral AAs, Alkakine. [below]
Recently I mounted the torch on a pole and used it underwater for spearing flatfish at night.
Problem is I went thru 2 sets of batteries in about 30mins!.
Is this normal? Batteries last for longer when I just use it as a flashlight i.e not continious.
Should I be using a different type of bettery for continous use or is it a function of LED torches not liking continous use?
I have read (here maybe?) that alkaline batts have low capacity in high current drain applications, and their extremely high internal resistance makes the voltage drop under load, which only makes the available current go down.
Please help.
Recently I mounted the torch on a pole and used it underwater for spearing flatfish at night.
Problem is I went thru 2 sets of batteries in about 30mins!.
Is this normal? Batteries last for longer when I just use it as a flashlight i.e not continious.
Should I be using a different type of bettery for continous use or is it a function of LED torches not liking continous use?
I have read (here maybe?) that alkaline batts have low capacity in high current drain applications, and their extremely high internal resistance makes the voltage drop under load, which only makes the available current go down.
Please help.
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