this post was submitted on 18 Jun 2023
16 points (100.0% liked)
flashlight
2887 readers
2 users here now
Portable illumination
Rules:
- Be excellent to each other
- Don't be the reason we need to make more rules
Related:
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
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.
I still remember dealing NiCad's 10-20% per month, li-ion was some space-aged future tech dream back then
Oh man, don't even get me started on the NiCads. My beloved old Ti58C calculator used a pack of them and it was actually what killed her :-(
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
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.
Should be closer to 60% but still, it's not in a long term ready state. Long stored batteries should be recharged before use.
Worth mentioning that some chargers offer a storage option, charging to exactly 3.7V.
On a charger that doesnt have this, it can be difficult to monitor it closely enough to get that exact voltage.