he says:
"with the long version you need to use a protected cell! An unprotected would be much too short! has not enough tension... well - it would work also.. (shakes the tight cell) ...hmmm... i feel its not optimal... (flashlight just works) but optimal is a protected!"
:D
€dit tested and found no downside from using a short, unprotected cell (30Q)
on hart tap it has a short disconnect, but the driver design allows to come back in same mode immedeately!!
Interesting. Some members on TLF reported that Acebeam‘s L17 had disconnects with too short 18650 cells, e.g. Samsung 30Q or Sanyo NCR18650GA. I’m curious if MC13 will also require longer batteries.
Naturally there is a balancing act when trying to accommodate protected and unprotected cells. If you go too much one way, you can risk crushing the longer cells. If you go too much the other way, unprotected cells can flop around. It is hard to be perfect for every cell.
In the product description in mankerlight site:
“3. Low battery indicator:
Voltage <3.2V, the brightness level downshifts to Moonlight.
Voltage = 2.9V, turn off.
(Ratio Error: ± 0.1V,while using different battery)”
Thanks for that information.Sounds like the flashlights probably do have low voltage protection.
It would be more reassuring to me if they clearly said that the flashlights have built-in low voltage protection using language that actually states "Low voltage protection" (instead of language that just states "Low battery indicator") because some flashlights behave the way they describe that do not have low voltage protection and downshift their brightness and eventually also turn off but continue to discharge the battery.
But … doesn’t it clearly state that it shuts off when the battery reaches 2.9V? That’s what LVP is.
It’s like a car manual stating, “in the event of a collision exceeding 30 kph, a balloon-like vessel will inflate to protect the front-seat passengers from impact”, and then people wonder if it has airbags.