07/07/15 Finished Handmade CXA3590 - Lum5-90 light build - Beam shots are in Post #1

This look like an interesting build, good luck :slight_smile:

I am sorry to hear you got unemployed :frowning:

Not your run of the mill mag mod.

Subbed

Great build as always, can't wait to see it finished.

Correct me if I'm wrong but this looks like protection circuit board (PCB), not a battery management system (BMS). This should work in charging mode but only with that charger that You bought that has a end cut-off voltage. BMS would work with any power supply with correct voltage. Hope You can provide status of every single cell in this battery pack after a few charging and discharging cycles. That would be very interesting.

PCM, but from what I read, besides balance charging, it also manages output, so that no one cell is getting very low. If one cell is lower, it “supposedly” balances the power to the other cells, but that may just be my lack of knowledge. I certainly don’t have a clue about these boards.

Very impressive.

OL, the best of luck with this build but even more luck with the search for a new job.

This build looks like it will really light the way!

Another OL monster in progress and it's going to be more powerful then ever. Love it.

Every time i see a new flashlight build by OL a popcorn comes to my mind

About this boost converter does it give constant current ? i had used converter like it called qskj also bought it from aliexpress and it was working perfectly

LEDs came in today. Photo in the OP. Hopefully I will have some testing done this week-end.

Justin, I didn’t know until I was looking at it on the PCT the other day: this CXA3590 takes over 42V to reach its highest rated current draw! But, it starts at ~35V on the bottom end. That is a HUGE jump! If a person wanted to, they could use 10X 18650 or 26650 cells with a DD/FET driver (assuming the driver can handle up to ~42V input/output) to power one of these. I know that’s not what you’re doing with this light, but maybe the other CXA3590 could be powered this way?

I think this will be a monster flood light at 10k lumens.

Will you include a (hidden) self-destruct feature that makes the light short the battery pack and explode? Like a last ditch grenade.

idk about you with that panasonic but if I were you I would go with RC lipo packs for helicopter

something like this?

Looking forward to your results :slight_smile:

I just watched your second video…freakin’ awesome. I bet it was hot, you’ve got excellent build skills.

I just added that video to the OP. Testing is done guys.

45 volts @4.25 amps. Everything works!

Still a long ways to go before beam shots.

Epic.

We have lift of.

You definitely need to add a fan… my salad bowl light from your earlier build contest has similar drive levels (and a much bigger heatsink area). Without the fan, it will melt into a slag heap in short order. The speed of the fan on mine is temperature controlled via a temp sensor epoxied to the corner of the Bridgelux “chip”.

I have played with adding a remote drive level pot to those DC-DC converters. It does not work very well. At certain settings the output goes unstable.

Holy cow, how did I not see this for a week.

Drinking will do that to you.