*BLF LT1 Lantern Project) (updated Nov,17,2020)

Anyone with the manual in PDF? Who should I contact from the company?

Does this help you?

Hi, the manual link is broken, can you share an updated one?

Thanks, the original manual is the one Iā€™m looking for, I guess Lux can re-upload it.

Does anyone know if usb charging does balancing of the 18650 cells?
And why does the power button stay lit all the time? Doesnā€™t that consume battery when off?

Any updates on a 21700 LT2 version? :smiley:

The way the batteries are connected in parallel, there is no way to do any balancing, so definitely no.
Any configuration with an electronic switch will consume battery when off. An indicator or auxiliary LED will add to this. You can turn the LED off in the Anduril configuration if you want and it will reduce the parasitic drain, but not remove it completely. The only way to have absolutely no drain is to unscrew the battery tube a few revolutions. Not just until the button LED goes off, but more, to completely sever the connection of the batteries to the light.

The cells are in parallel so they will naturally self balance. No special considerations are required for balancing while charging.

The switch LED uses very little current (donā€™t remember exact numbers; itā€™s been mentioned before). It would take years to drain fully charged cells. If itā€™s a concern, it can be turned off.

I recall a calculation that the switch led would take 16yrs to drain the battery when set to low.

Now if you havenā€™t used the lantern in 16yrsā€¦. well then the parasitic drain from the switch led is hardly the main concern.

When I first got my LT1 I unboxed it, tested it playing around for a night then put it away & didnā€™t use it for a few months. Now I use it every night. Run it without cells off a 30,000nAh Romoss power bank and attach lantern to a light weight collapsible stand.

Looking forward to the mini when its done.

What this CL1 lantern ive seen on facebook?

?link?

Excuse meā€¦.with all cells in parallel, there is no way for them to not be balanced. 4 cells put into a carrier where all 4 positives touch the same conductor, and also terminate to the same ground will immediately start balancing. The higher potential cells will start charging those of lower potential until all 4 have equal potential.

Is it supposed to look like this on the board? I hate to come off as rude but it just looks sloppy. Maybe it is normal?

Also, what is the adjustable component with a Philips head for?

The thing on the board is flux residue, itā€™s from the reflow soldering process and helps the solder flow well by enabling a better heat transfer and it also removes some corrosion from the copper and such. Itā€™s no problem itā€™s still there but it does indeed look a bit dirty.

Iā€™m pretty sure the adjustable component (potentiometer), in combination with the solder bridge on the left of it, can be used to increase/decrease the glow of the button.

I didnā€™t mean the flux. The outer ring is missing some material. Also why put solder on half of the ā€œBā€ stuff like that.

Hmm, Iā€™m pretty sure the solder on the B is excess that came from under the ringā€¦ They must have applied a little bit too much solder paste or something. About the ring I donā€™t really get what you mean unfortunatelyā€¦

On the bottom right if the picture the layer what looks like gold. It looks like it a piece was scraped off. It was like that when I got it.

The solder thing makes sense, thanks. I feel like that could of been a safety hazard. Glad it didnā€™t short anything.

Sofirn has a small batch of LT1 with Anduril 2 and powerbank function

https://sofirnlight.com/products/new-version-blf-lt1-lantern-with-anduril-20-power-bank-function

No Green option? :beer: :beer: