Review: JETBeam SRA40 (XM-L2 T6, 4x AA)

Orsm review. Thanks. looks like another really nice AA light.

Great review thanks !

One question, you say “The battery arrangement is 2S2P” ?

So are you saying the XML LED is running from as battery supply of 2.4V ? If so Jetbeam have designed and made a very good boost driver.

Excellent review!

High first? Ugh… why is everyone doing that lately?
And a proprietary charger? :frowning:

If it had a Micro-USB connector, and was setup as Low-Med-High; even better would be if they included a lower-low (like the PA-40, Moonlight-Low-Med-High which they got perfect), then it would have been an instant sale. Otherwise, I’ll have to pass.

Too bad noone makes a light with a toggle switch inside the head, where you can switch between Low>High or High>Low. I’m sure that would add a few dollars onto manufacturing though.

Another impeccable review, very thorough and very goodlooking pictures, thanks!

(I own the D40A which I find very good and was not at all budget, so I'll pass this one)

What, another giveaway? I’m in.

Oh, it’s a review, sorry. Great stuff Upz

Yep, the flashlight is powered by two cells in paralel, and two in series.
When I was measuring the standby current drain, I checked by “bypassing” one of the 2 cell group and putting the DMM in series in the other group. I was able to measure a 2.2A drain in High mode from on the the series, so I guess the full current for max output whit fresh eneloops is around 4.4A (2.2A from each series).
AFAIK, Nitecore EA4 has the same battery distribution, and similar buck driver performance.

Thanks for the comment!

Thank you guys! :beer:

Maybe this is an interesting idea.
Do you know Nextorch MyTorch series? MyTorch18650 has a recharge MiniUSB port, which also works for the customization of the light UI.
Just in case manufacturers reads this, what about implemeting a MicroUSB plug for the charging feature, that can also be used to customize (just like the MyTorch series) the user interface via a simple PC sowtware with your OWN mode sequence?

I mean, you kill two birds with one shot (spanish say, not sure if it has sense in english or nor, lol) if you put a “universal” phisical conector that also allows you to give customer the power to customize and fine tune the tool to his own needs or taste.

Nextorch get it right, interesting idea, but unfortunatelly the series are in the “soft” side, with very gentle max outputs.


:smiley:

2S2P will give a supply voltage to the driver of 2.4V. This is less than the Vf of the LED, therefore it must have a boost driver not a buck driver.

EA4 gives 4.8V (four *1.2V) from is batteries, so requires a buck driver.

Hope UPz doesn't mind if I jump in here but the batteries are in 4S1P not 2S2P (one-UPz for an AWESOME review!) ^_^

The saying is virtually the same in english.

I like the microusb charging idea, although as nicely as this light is built, I still wouldn't pay the higher price with the modes it has. Your microusb programming idea should take care of that.

Very extensive and well done review, thanks, UPz :)!

Thanks for confirming, very confused for a bit there.

it is now available at wallbuys:

An excellent and very useful review. Muchas gracias. :beer:

Psst… you can get it cheaper with BLF group buy from banggood for $64.99… hehe sorry to hijack, just want to pass the savings to BLF members :wink:

I'm only a few years late but I got my SRA40 today. It is by far the nicest 4xAA light I have in my collection and the fact that it has a charging port is a real bonus. There just isn't any 4xaa light in my collection that is built anywhere near to the solidness of this light. I have a DA40 on the way, but from the pics alone I can see it won't be built like this light. I think this light is going to make the perfect christmas gift for a couple of people.

better late than never! :slight_smile: Glad to read you liked the light. Enjoy it!

After getting your D40A, do you still feel the SRA40 is superior? Seems like there’s a notable weight difference between the two (DA40 - 165g; SRA40 - 245g)

Sure looks like an XML2-U2 and not a T6 in the pictures. Great light regardless.