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

[DBSAR]

@contigo

Hi all,

Looking forward to this light a great deal. Like my Finnish kaima Maukka, I also like the idea of being able to run the lantern with solar without having batteries in the unit.

I am wondering if this can be run at full brightness without it over heating? Being its less than 1k lumens, one would think its possible….
which brings be to another Q: did you by chance test how long this will run on max brightness?

Thanks for all the work (to the whole team), this lantern will make many people happy.

EDIT:
i see the solar charger being posted in this thread (ECEEN 10W) and curious if i can leave it plugged in the lantern without overcharging the batteries?

With the standard 5-channels enabled, (factory settings) i got past 12+ hours on maximum brightness on four 3200mAh cells. That equals to a full weekend of camping of 100% output without charging. (though for most camping needs running it at 75~80% is plenty of light. You can leave the Eceen 10 watt solar charger plugged into the lantern 24-7 with no issues, as the TP5100 charger circuit in the lantern keeps everything controlled.

[DBSAR]

@agent80

Fantastic video. One question - how do I cover the bottom when powered with a power bank?

Right now im looking for camera lens caps that may fit as a cover, (but hopefully the future accessory kit can include a cover.

[Rexlion]

@DBSAR

@agent80

Fantastic video. One question - how do I cover the bottom when powered with a power bank?

Right now im looking for camera lens caps that may fit as a cover, (but hopefully the future accessory kit can include a cover.

A pliable silicone food cover comes to mind. I doubt they make any that small, but maybe.

[Rexlion]

@thijsco19

@FlashPilot

DBSAR, just a thought, and this might be too late in the game to ask. But would it be possible to machine several thin radial grooved ridges in the top portion of the head around its perimeter? It looks like the mill removed a good amount of material that could have been used to create additional surface area for heat sinking.

It has been talked about before and it came roughly down to this;

Yes it does increase the surface area and will increase the heat dissipation.
But, it is not necessary for this lantern. The amount of heat the leds will produce isn’t enough to cause problems. Iirc, DBSAR did a long term testing and found that the top part didn’t become ‘too hot to touch’.

And personally, especially with a lantern style I find the clean look much better than a grooved / finned look. (but again that’s just a personal thing)
For a possible ‘power upgrade’ it is definitely something to look at.

Yes, we definitely will want more grooves, fins, and whatnot for the future 5,000 lumen :confounded: version. (Wouldn’t that be fun?)

[SwiftDrift]

Count me in for one!

[MNLegoBoy]

How hard would it be to replace the frosted lens on it, because i think if its easy enough, that could be another thing in the accessory kit. Like the ones you showed in the video

[freq]

Yes, I am interested in one (1) pc. please…

I finally read all the tech regarding this (a big read)… and yes it would be very handy…

[BVH]

Would like to add an additional 3 to my current 2 for a total of 5.

[BlueSwordM]

4 cell light.

9th month coming in quickly for this GB to finally start

9th time I’ve checked this thread today.

9 ways to finish the day.

$, money, is a thing I want to throw at the lantern.

[SIGShooter]

Here are this week’s additions to the interest list and the files linked to in post #1 have been updated.

Thanks

2039 betajosh711
2040 betajosh711
2041 Paradoxical Antagonist
2042 d00rkn0b042
2043 hoodninja
2044 hoodninja
2045 sunsethiker
2046 mohrlumens
2047 Sparky.
2048 Sparky.
2049 Gunga
2050 Brett
2051 Capsfan19
2052 CoolNinja2
2053 rockmonkey4004
2054 sgthudson
2055 MaxxVE
2056 charwinger21
2057 PleinPhare
2058 tehmatt
2059 Scooter000
2060 LDIBP
2061 LDIBP
2062 AtomicFire
2063 fritzet
2064 fritzet
2065 fluke
2066 slmjim
2067 Tenshi0
2068 Wieselflinkpro
2069 azhu
2070 SoCal5150
2071 SoCal5150
2072 twisted raven
2073 Cereal_killer
2074 TMaxxJJ
2075 justanotherguy
2076 f0xx
2077 mopar440_6
2078 Marcello
2079 leftdisconnected
2080 Wheels2050
2081 infinity526
2082 creynolds
2083 Yacob29
2085 djans1397
2086 djans1397
2087 Forever
2088 wkweksl
2089 Nicko69
2090 unknown00101
2091 timo5150
2092 timo5150
2093 andrewmac
2094 Bardo219
2095 Bardo219
2096 meti
2097 snoopstah
2098 snoopstah
2099 SwiftDrift
2100 freq
2101 BVH
2102 BVH
2103 BVH

[DBSAR]

UPDATES: - Aug,18,2019 >>

• As the production of the new BLF LT1 Lantern is approved and Sofirn is preparing to begin the production, they have announced the Group-Buy Price!

> For the BLF LT1 lantern, ( without-batteries) the GB price is to be $49.99 USD.
> For the BLF LT1 lantern, (with four sofirn 3000mAh 18650 batteries) the GB price is to be $62.99 USD.

Updates will be posted soon on when the orders can be placed and the details with links.

[d_t_a]

@DBSAR

UPDATES: - Aug,18,2019 >>

• As the production of the new BLF LT1 Lantern is approved and Sofirn is preparing to begin the production, they have announced the Group-Buy Price!

> For the BLF LT1 lantern, ( without-batteries) the GB price is to be $49.99 USD.
> For the BLF LT1 lantern, (with- four 18650 high-capacity Sofirn batteries) the GB price is to be $62.99 USD.

Thanks. Finally! Where do we order?

[SIGShooter]

@d_t_a

@DBSAR

UPDATES: - Aug,18,2019 >>

• As the production of the new BLF LT1 Lantern is approved and Sofirn is preparing to begin the production, they have announced the Group-Buy Price!

> For the BLF LT1 lantern, ( without-batteries) the GB price is to be $49.99 USD.
> For the BLF LT1 lantern, (with- four 18650 high-capacity Sofirn batteries) the GB price is to be $62.99 USD.

Thanks. Finally! Where do we order?

PM’s will be sent when the buying instructions have been sent from Sofirn.

NOW IS A GOOD TIME FOR EVERYONE TO CHECK THAT THEIR BLF USER NAME IS CORRECT IN ONE OF THE FILES LINKED TO IN POST #1. AN INVALID OR MISSING NAME MEANS NO PM.

[shirnask]

:+1:

[MNLegoBoy]

@DBSAR

UPDATES: - Aug,18,2019 >>

• As the production of the new BLF LT1 Lantern is approved and Sofirn is preparing to begin the production, they have announced the Group-Buy Price!

> For the BLF LT1 lantern, ( without-batteries) the GB price is to be $49.99 USD.
> For the BLF LT1 lantern, (with- four 18650 high-capacity Sofirn batteries) the GB price is to be $62.99 USD.

The price w/ batteries was cheaper than i thought it was going to be
Does this mean GB will be end of August, beginning of September

[DBSAR]

@MNLegoBoy

The price w/ batteries was cheaper than i thought it was going to be
Does this mean GB will be end of August, beginning of September

I am estimating around that time. :+1:

[Helios_azimuth]

Wonder which battery it is, mAh and protected or unprotected. Guess we will find out soon.

[WolfDiesel]

Double checked I’m on the list because I don’t wanna miss this. I’ve wanted a good lantern for so long and this is going to be an amazing lantern.

[saypat]

it’s only money

[Speed2z28]

+1

I’m currently entry 1865 for 1 lantern, but would like to add another lantern, for a total of 2.