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Great constitution! It's a pity that the array is damaged. I went through the same thing. I received two damaged arrays and the third one came working and after 2 weeks one diode died. At the moment, only 13 units on 4A are working and so far they are approx. These arrays are probably very...

I decided to improve the cooling of the laser using a Peltier cell. I will glue the Peltier to the end of the aluminum heatsink. On the warm part I will stick the same finned radiator again. Thus, the fan will be cooled by the Peltier, and its cold part will help to cool the large radiator...

It's unpleasant, but I hope it's just this one. I don't believe the problem is that they work on 4A. As I said, I don't exceed 50-55 degrees. Apparently these NUBM35 arrays are not that successful and are very easily damaged.

So after about 10 days of use, one diode died. I haven't changed anything on the laser. It operates at 56.7V and 4A current. I do not exceed 50 degrees in use. Space suddenly as I was using it the laser went off (BMS protection) Then I turned it on and saw that one diode died. I don't know...

In new batches this front R082 has been replaced by R500. These pictures are old. With this combination in the photo, the resistors are arranged like this. Front R082, rear R50+R500. In the new lots they are like this Front R500, rear R500 + R082.

In the photo they have been replaced. The front resistor is R500. You just have to remove it and put the R100 in its place. So you will get 5.2A These resistors come from the factory. Front R500 rear R500 + R082

Only the SMD resistors are replaced. If you want 5.2A you simply remove the front single R500 and replace it with an R100. That is all. On the back side are 2 resistors on top of each other. You only need to remove the front one because that's the easiest way. The driver runs on two 18650...

I only use these drivers. They are easily modified to whatever amperage you need. You just need a little dexterity to change a resistor or two. I run them at 5.2A and they work great. R100 + R620 +R500 = 2.86A R100 + R750 +R500 = 2.8A R100 + R820 +R500 = 2.72A R100 + R082 +R500 = 5.2A R082...

These are phone magnets if anyone is interested. They are strong enough to hold the lens firmly. It's quite a distance from the diode, so they won't harm it in any way.

I won't raise more than 4A. At 4A the laser works great and is very powerful. I'm even still amazed at his power. Even if I asked for 10,000 hours, I would never reach them. This is for playing with it though, not working with it. Things worked out very well with this lens. I made a video...

I measured the voltage from the driver to ground. It showed exactly 56.7V. I don't know if this is normal. That is, it currently operates at 57V and 4A. Each diode consumes 4V voltage and 4A current. I saw that this was normal. So these 57V are enough With magnet 👍

Yes, definitely not all drivers work well. The one we use for NUBM35 has been proven to work well. It has the same driver, but a smaller 250W. You can use it for nubb13. BGN 3.59 | DC DC Boost Converter Constant Module Current Mobile Power Supply 250W 10A LED Driver Module Non-isolated Step...

When setting the driver to 4A again I noticed that on start up it smoothly ramps up to 4A rather than hitting them directly. This is good for the diode because it happens to be kind of a soft start

I received the new laser array today. Fortunately, everything worked perfectly without any problems. It is set to run at 4A and definitely impressed me with its power compared to the previous one which was broken and only 6 diodes working

Great. I'll wait for you to share how it is when you get it. I am these days waiting to receive the new NUBM35, I hope it works because they tested it beforehand. You know what the case was with the previous one.

New laser box Blue 7W+ NUBM0E 2x batteries 18650 Litokalla + BMS 5A Driver 5A Security key Key on/off Temperature protection 60C KSD Charging with Adapter 8.4V

These work stably. You just need to use two drivers to power every two rows of 10 laser diodes. I use the same converter with 18pcs 18650 batteries 600W Aluminum Plate DC-DC Boost Converter Adjustable 10A Step Up Constant Current Power Supply Module Led Driver https://a.aliexpress.com/_mLgIFM2

This is after I glued the aluminum heatsink and raised the fan voltage to 18V. There is a marked improvement in the rapidity of the temperature drop

At this rate the temperature drops. It drops by 1 degree in about a minute. It's slow, but I don't mind at the moment. I went from 30C to 70C in about 5 minutes of continuous work. I also put this aluminum radiator and it has an even better result