cree xre upgrade

7 posts / 0 new
Last post
devryd
Offline
Last seen: 6 hours 23 min ago
Joined: 02/04/2020 - 07:11
Posts: 21
Location: Germany
cree xre upgrade

Hi Guys,
I found a flashlight today and it uses a cree xre, as far as I know. It is driven at 600mA and not particularly bright. I would like to upgrade the led and the driver, but there is a problem: Ground from the battery comes from the plate, the led is mounted to. It is a round 24mm plate and i couldn’t find anything online. Do you have any suggestion on how to proceed? I cant use a normal driver, because the inside of the flashlight is anodized aluminium and the driver is mounted from the front.
Thanks for your advice
Devryd

MtnDon
MtnDon's picture
Offline
Last seen: 36 min 1 sec ago
Joined: 08/27/2015 - 18:25
Posts: 2787
Location: Canuk in NM

Pictures?

devryd
Offline
Last seen: 6 hours 23 min ago
Joined: 02/04/2020 - 07:11
Posts: 21
Location: Germany

https://www.directupload.net/file/d/5729/9mbgl5qc_jpg.htm

In the outside ring, the module is connected to ground.

devryd
Offline
Last seen: 6 hours 23 min ago
Joined: 02/04/2020 - 07:11
Posts: 21
Location: Germany

I just found a brass pill that i might be able to fit in the flashlight.
https://www.fasttech.com/p/1208600

I ordered it and now I don’t know what LED to put in there. I want it to be fairly bright, but it doesn’t have great thermals, I think. I was considering to use a XP-L V5 but I am open to different suggestions. The host fits one 18650 battery.

devryd
Offline
Last seen: 6 hours 23 min ago
Joined: 02/04/2020 - 07:11
Posts: 21
Location: Germany

Does nobody has any recommendations on LEDs?

MtnDon
MtnDon's picture
Offline
Last seen: 36 min 1 sec ago
Joined: 08/27/2015 - 18:25
Posts: 2787
Location: Canuk in NM

The XP-L is fine. Whether or not the light can take the heat produced really is partly dependent on how much current is supplied to the XP-L as well as how well the light head and body can radiate the heat. A 2 part thing; In and Out.

Barkuti
Barkuti's picture
Offline
Last seen: 2 hours 41 min ago
Joined: 02/19/2014 - 14:46
Posts: 4573
Location: Alhama de Murcia, Spain

devryd wrote:

… I want it to be fairly bright, but it doesn't have great thermals, I think. I was considering to use a XP-L V5 …

Looks like some sort of pill with a ∅16 mm MCPCB thermal glued (?) into.

Honestly speaking, any modern led will do better than the XR-E lumen wise, but just in case it is of importance let me say you may lose throw if you don't considerably increase the driving current for bigger leds. The XR-E has a tiny die (see: LED Package/ Die Sizes - WIP -) and thus smaller leds may be better replacements: Luminus SST-20, Osram CSLNM1.TG/CULNM1.TG (White Flat), Cree XP-Gx, Nichia 219C… Other than this, any modern led will overall do noticeably better.

The Light Innocent I am

Deleting a post and redoing it causes the forum thread answer notifications to become invalid. Thus, if you need to change your just published post, edit it. Thanks.