Acebeam x70

I’m surprised that people mention this thing but there is no forum topic around it. So here it is.

For those of you that don’t know what this is its Acebeams’ newest arrival “yet to be released” its a bit of a monster. It will produce a 40K lumen max output.

Below is a link to you youtube video. I know for a lot of people this won’t be at the top of their must have list but for me it is…

It has active cooling etc. with fans… interesting… :smiley:

OFc there is a thread of this beast :wink: search is your friend.

hmm… gee no wonder I didn’t find it its from March…

:slight_smile: I’ll probably be one of the first to know… I just hope they resolve any issues they might be having…

We talk about it here in my thread on actively cooled lights as well.

I mentioned the X9R as it USED to be actively cooled, but it’s a regular light now.

yeah it used to be… but that’s a major battery drain….

No its not. It’s negligible.

3 fans? not one

A typical 40mm fan uses roughly 1.2 watts. So for 3 of them, let’s say 5 watts total. When you add that 5 watts to a light already drawing 250 to 300 watts, the fans amp draw is under 2% which I consider negligible.

That depends on the batteries they will be using. Most lights can’t maintain their turbo for very long and that’s where it will make a difference

Yes, but the fans will not run if the light reaches a certain temperature.

And as JasonWW said, it is just negligible at 2%.

In fact, keeping the LEDs cooler using active cooling will probably be saving a lot more than 5W.

TLDR: Active cooling at such high power levels can actually reduce power consumption.

It will need to use batteries capable of a little over 10A each.

The fans only need to run above a certain temperature (maybe only above 60°C?). Once Turbo is changed to High for instance the fans may run less or cycle to prevent over heating. The PowerTac X10000 Destroyer only has a single fan (it might be bigger than 40mm, though) and it can maintain 10k lumen just by cycling on and off. This greatly reduces the fans power consumption. The X70 probably won’t even need to use the fans unless over 7k lumen and after several minutes.

I don’t think active cooling reduces power consumption. It very slightly increases it.

No, I meant that if the light is regulated at a certain brightness level, active cooling will decrease power consumption compared to no active cooling due to the fact that the forward voltage of an LED going up as it heats up. So active cooling will actually decrease the power usage by maybe 10-15W if done right.

Hmm… maybe this whole fan thing is what’s holding this light up. Especially since I’ve been hearing that the x70 is suppose to keep its max turbo for 1/2 hr just rumors for now…

I think I understand what you’re saying, but you might be saying it in a way that’s a little confusing to me.

Flashlights are not capable of monitoring there output in lumens. To do that would require some type of optical feedback loop which isn’t practical at all. So all the driver can know is how much amperage is going to the emitters. It’s up to the designers and engineers to use enough amperage to generate the amount of lumens they want.

I don’t think the designers and engineers have to take into consideration the changes in the forward voltage as the light heats up. If they measure the output using ANSI-FL1 standards, then they measure at 30 seconds.

So I assume there’s no power usage decrease due to the active cooling. This is a bit beyond my knowledge, though. Maybe someone like Lexel or DEL (a driver designer) could go into more details.

I’m sure it is. It held up the X9R for a very long time until they scrapped the active cooling. It adds a tremendous amount of complication plus Olight and Acebeam also have to worty about their warranties. I know Olight has 5 years warranty, but I’m not sure about Acebeam. I assume it’s pretty long, though. It’s hard to keep the fans working well in dusty, dirty or wet environments for the duration of the warranty period.

I don’t know if the X70 can do 40k lumen for 30 minutes, but I did crunch some numbers and the batteries seem capable of handling it. I think the triple fans might be able to just barely handle the heat load. I think it’s physically possible it can do that, but can Acebeam build it to do that? We will have to wait and see.

Even if it can only sustain 30k or even 20k lumen that would be record breaking. Right now 10k lumen is the record and I’m not even positive that light is doing 10k. It has not been tested. It’s rated at 10k.

Hmm.

Doubt it could physically run 40k lumens for 30 min.

Well, being a 40000 lumen light and having 12x XHP70.2s, it must be pushing out about 3400 lumens per XHP70.2.

Knowing that an XHP70.2 consumes 22W at that power level, it means that the light is consuming at least 270W of power at max brightness.

Even if you were using NCR18650GA and not taking into account internal resistance, you would have at max a battery capacity of 100Wh. Meaning at 40k lumens, you would have a max, down to 2.5V, runtimes would be a max of 20 mins, not 30 mins. That would be even less down to 3V and counting internal resistance, and that the cells are probably 30Qs and VTC6s, not 3500mAh GAs.

It is physically impossible to get 30 mins even with an 8 cell battery pack at 40000 lumens. Maybe 30000 lumens, but not more.

It would need 30Q’s not GA’s.

I was saying it is possible to run in turbo for 30 minutes. I don’t think it will maintain the 40k, though. As voltage drops, the output would drop.

Hmm… nice points… I hope they pull it off; groundbreaking if they do…