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

If I read the OP correctly, the USB charger you have in the prototype charges each cell at .25 Amps. How many hours will it take to fully charge the four depleted cells, say 3.2 Volts?

I once charged a depleted 18650 cell at .5A and is seemed to take half a day to complete the charge. I love the idea of built it charging, but .25A seems to low for 18650 cells. That is what I charge my little 10440 cells at.

The TP4056 I used is a 1 amp model, thus giving roughly 250mA to each cell, (four in series) a 2 amp built in charger would be faster, but either way will depend on how far you run the cells down to and the capacity of the cells. With 2 amp wall charger I charged the lantern in 7 hours from 3.6 volts to full with 2400maH cells.

I think that a 2 amp built in charger would be better for sure. At what point would the heat generated by an internal charger in a closed light become an issue?

2A * 5V = 10W (rounding up)

Thats not extreme, but it isn’t insignificant either. I’m not an expert, but my gut says you would need that to be heatsinked to be reliable long term. I bet if we asked someone like HJK he would be able to give a good idea.

What about the option to add an optional wireless remote control&status modul (bluetooth) there?

Interested, add me to the list

Can you please add me for 2? Thanks.

What would be the purpose?

Maybe some are worried this won’t be costly enough or that it will be too rugged? :slight_smile:

Add me in too!

I’m interested, this seems like an awesome lantern in the making. please add me to the interest list

I wonder if using multiple emitters would be beneficial… not for greater lumen output, but for increased efficiency.

If you design the lantern to use a 20mm mcpcb, then those who want can swap it out for a triple or quad led configuration.

But you’ve probably already thought of that, huh? :sunglasses:

Bluetooth!! Forget that extra complexity/cost.

This lantern sounds great! Please add me to the list….

I would in for one lantern. Awesome design!

I wish the lantern project would be a sort of addon to the Q8, I am sure with a proper reflective cone shaped on the top with a milky cylinrdical diffusor the light pattern would be great, without moving the LED on the top

Just screwing the diffusor on the Q8 instead the bezel

Lexel such questions are asked many times
This is a lantern with different features.
Every time somebody says a diffuser or add-on for the Q8 suffices this will probably be the response :wink:

Looks nice. Interested, price dependent. Thanks for putting in the time & effort DBSAR!

interested, please add me to list

Please add me to the interested list.

Thanks