What problems running LD01-10440?

[Spence]

What kind of problems should I be aware of running a 10440 rechargeable LiIon in a Fenix LD01 and a Maratac AAA?

Is it relatively safe if I only use HI in short bursts and be mindful of heat build-up?

 

[csshih]

yep. it's all about heat because the 10440 is direct driving the LED. also, the 10440 battery is driven rather hard, so usage life isn't too high either.

 

[hyperloop]

LD01 on a 10440 is what i have on my keychain, the drawback is lower runtimes (especially on high) but as this is a backup light, it shouldnt matter that much.

 

[sol-leks]

I ran a 10440 in my LOD for a while and there are two things you should be aware of. There is some danger in general with using 10440's but the two main issues with this is that the 10440 when fully charged will makehte LOD strobe on certain modes until it drops to a reasonable voltage, which is easy to do by running it on high for a few minutes. I don't believe this harms the light in anyway. The other issue to look out for is that 10440's do not have any cut off for over depleting them so if you run them too low they are dead forever. This was why I stopped using them because I lost track or the lod turned on in my pocket and the batteries died. The 10440's are fun to show off but I've found in the long run normal eneloops are way better.

 

[Spence]

I've been running Eneloops in a number of my lights including TK40, LD01, EZAA, and now the Maratac AAA and have had excellent service from them. As I understand it, the 10440's provide a burst of high brightness for a very short period then the beam drops to ordinary levels, is that right?:thinking:

 

[DHart]

10440s all I run in my LD01, LD01 SS, LF2XT, and K-103.

With the LD01 I mostly use the medium setting which is about as bright as the LD01 on high with an Eneloop. In the medium setting, generated heat is lower, runtime is longer. But I occasionally will use a burst on high - never long periods of use on high.

I almost always have one or more somewhat larger lights (QAA, Q123, or Q123-2 - all on li-ion cells) on hand after dark, so AAA lights are merely convenience lights for me, which tend to just get occasional use for short periods of time during the day. In this capacity, the 10440 hold up for quite a while... though I periodically top them off anyway to extend life of the cells.

If you are aware of your battery's state and follow the use and charging guidelines for li-ions, and use your light more for convenience rather than heavy use, I can heartily recommend using li-ions.