Exploding L2T... sorta

Buck91

Flashlight Enthusiast
Joined
Feb 26, 2007
Messages
1,761
Location
USA
So, I may have done something knid of stupid, but you guys tell me :party:

Anyways, I was planning to kill two birds with one stone and see how long my L2T v2 (rebel) will go on high before I notice it dimming (since I've heard they actually have a shorter runtime than the 1-AA) and at the same time cycle a pair of duracell LSD's I've had laying around for a while.

I put the batteries in, turn the light on, tighten into high mode and start my clock. Decided I better shower/shave in case I wake up late as usual tomorrow, so I wrapped it with a cold wet wash clothe and took a shower.

When I came back, it took me a second to realize what I was looking at. Light was still on, but the rubber clicky cover was puffed WAAYYY out like a balloon! Immediately, using the wash clothe as a safety cover, unscrewed the tailcap to d/c the circuit then carefully continued until the excess pressure vented with all the furry of a calm summer breeze :thumbsup:

Any ideas what happened? Batteries are un marked, light is unmarked, and everything still works! Is this characteristic of NiMH venting or maybe the light just heated up enough for the little air in the tube to expand that much? :confused: Should these cells still be safe and effective in use?
 
One or both of the cells vented. The light should be fine, though it's hard to say if the cells are unscathed. It could be that your batts were of slightly different capacities, resulting in one cell reaching empty before the other. An imbalance in voltage between the cells follows which can mess with the depleted battery, causing it to release some gas.
icon15.gif
 
Anyways, I was planning to kill two birds with one stone and see how long my L2T v2 (rebel) will go on high before I notice it dimming (since I've heard they actually have a shorter runtime than the 1-AA) and at the same time cycle a pair of duracell LSD's I've had laying around for a while.

Sounds like the cells were at differing charge levels. Perhaps you had lost track of one of the cells and inter-mixed ?
 
Thats definately likely... Suppose I'll charge them seperately
 
Top