Shocker's battery carrier burnt due to batteries misalignment

Hi guys, I hope everyone can pay a little attention here. I burnt my Shocker’s battery carrier due to this last night and luckily the batteries did not explode.

So I put three Samsung INR 20R into the carrier. Since they are unprotected batteries the lengths are much shorter compared with those protected one, and the Shocker’s carrier is designed for accepting long batteries. The INRs are very loose after I put all of them into it.

What happen next was I accidentally shake the carrier and all the batteries were crooked and the next thing was the smell of some burnt plastic came out (I thought it was the chemistry inside the batteries went bad at first, but luckily it wasn’t). I quickly took out all of the batteries, had everything checked and found that one of the connection between a bat- to bat+ of the carrier was burnt.

To repair the carrier I used some 22AWG wires to connect the burnt path, it works but the light could not be turned on sometimes. I suspect that the switch was damaged as well. I think when the batteries were crooked it created some sort of short circuit there.

I did nothing there but the misaligned batteries caused this. I seriously feel that the Shocker’s battery carrier should have another pole in the middle to avoid misalignment of the batteries. Just a reminder to you Shocker guys to be more careful when the batteries were loose inside the carrier. I am not sure if anyone else experience this before me, hope not though.

EDIT: Some pictures added after repairing the battery carrier. Sometimes it doesn’t turn on the light though and I have not found out why yet.

Connected with 22AWG wires. The original current path was burnt.


The other side.


Overall look.

I’m not real familiar with that light, I thought I read some guys using rare earth magnets to take up the space. I use them in a few lights.

Someone here did that mod of a center pole on the carrier. Sorry can’t remember which thread. I just soldered (at the top) a length of single 4mm core cable, which does a similar job if not as well or as good.

Had that problem of loose fitments with the cells I use, so I added springs inside the existing ones.

Yeah, filling up the space can be in few ways, and I did put some solder blob on top of the cells after this incident. But the thing is do not ever let your batteries misaligned in the battery carrier as that could possibly create short circuit.

BTU Shocker is a nice light… no, it is a monstrous light especially after modded. The complain for this light is its battery carrier looks cheaply made to me. Battery carrier like in the TK75 would be better. I need to find where did I put my rare earth magnets.

For such a nice light it could have a better battery carrier, that’s for sure.

V54 sells this with his Shocker. I don't know if he'd sell it separately.

Easiest spacer is some electrical tape and a couple of dimes, heads up towards the bottom of the cell to make contact. You still may need help on the positive pole, however that is a quick easy fix to get some more pressure on the springs without having to solder or anything.

(Use electrical tape to keep it from coming out/sliding out and shorting.).

Did the electric tape around the poles tweak on mine as well, works great.

Now this is sweet. :slight_smile:

i put some electrical tape on the 3 plastic pieces that hold the ends of the carrier together to prevent wobble - seems to work

I can’t imagine it. Do you mean you just put some tape on the 3 poles to make it thicker so that it can prevent wobbling of the batteries?

yes

i can take a photo tonight when i get home if you would like

Thank you Paul and unknown00101, that is a nice and easy fix. But without the center pole are the batteries still have some chances to move inwards or is it already tight enough?

At roughly 8mm it takes quite a bit of force to push batteries inward, enough that the poles bow a bit. There’s enough friction to keep batteries from falling out as well.

I see, if the pressure/friction is enough to keep the batteries in place then I can feel more comfortable operate it. I think I am going to do this tonight then, thanks for all the inputs.

Some pictures added in the OP, the battery carrier was repaired with wires.

Wrapped the poles with papers last night and it works pretty well!


With INR 20R inside. They don’t wobble anymore. :slight_smile:

Thanks everyone for this bright idea.

By the way I disassemble the Shocker’s switch last night and didn’t find anything burnt at all. Re-assemble the switch and it works like normal again.