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Do all flashlights slowly discharge when not in use? (kbin.social)

submitted 1 year ago by [email protected] to c/[email protected]

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I was thinking about buying a wurkkos fc11 as my first flashlight but it said they recommend untwisting it in a review to avoid making a connection so it doesn’t discharge while not in use. Do I need to worry about that with all flashlights? I was planning on keeping it in my backpack so I have it whenever.

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[–] [email protected] 0 points 1 year ago (4 children)

Mechanical switch lights like the Convoy S2+ do not have any parasitic drain. But be aware that the batteries themselves have some self-discharge, Li-Ions are the worst at something like 5 percent in the first 24 hours and then loses 1–2 percent per month. Protected Li-Ions are even worse at 4-5% per month.

If you need to keep them stored for long periods, get an AA-compatible or dual-fuel flashlight and use Eneloop batteries for rechargeables, or Lithium primaries if you don't need/want to recharge.

[–] [email protected] 0 points 1 year ago (2 children)

To add to this, if you are going to store your Li-ion batteries for any period of time then you should charge them to 3.7v instead of a full charge. This will extend the life of the battery

[–] [email protected] 0 points 1 year ago (1 children)

Good tip, but the OP should be aware that when at 3.7V they have only ~50% charge in them, so remember to also pack a spare or two (at the same voltage) to have the same total runtime.

[–] [email protected] 1 points 1 year ago

Should be closer to 60% but still, it's not in a long term ready state. Long stored batteries should be recharged before use.

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