problems with my flashlight

[Elton]

so i got my dx r2 drop in and ultrafire 3.7v batterys its been working fine then got a solarforce clickie tailcap and that's when i started having problems ... for some reason it stops working after i use it for like 15 mins it just flashes on then goes really dim i switched out the tail cap for the surefire one didint help if i switch the batterys out for ones fresh ones off the charger it works fine :thumbsdow:thumbsdow

 

[Elton]

any idea's ?

 

[nzgunnie]

Flat batteries....

Check your cells to make sure they aren't faulty.

 

[Elton]

i have 4 of them ive mixed and match some deal :thinking:

 

[nzgunnie]

What light have you got this in?

It could be very poor heatsinking. If you are using it in a G2 this could make it worse. Sounds a bit like it's getting too hot.

 

[Elton]

its in a surefire 6p well it says defender but it looks like a 6p

 

[Elton]

im not using it for 15mins straight but like 5mins here a few mins there etc it just seems like after awhile it stops working