Well I Almost Blew Up My First Mod Raptor 10A

[erwincl56]

I definately fried it. Stupid mistake, The bottom wire connection on the battery sled was shorting out on the Altoids Case. As soon as I put the second battery in it started smoking. Not good.

Well the one battery is definately fried. It still holds a charge, but I don't think I'd trust it in a mod. Better safe than sorry. I know I should have breadboarded it first and started with a easier box than a Altoids. I also should have gone with a design with safe guards like fuses and a P-fet. oh well, live and learn. I guess when I get ambitious, I'll see if anything is salvagable from this mess. Anybody know the easiest way to test a Raptor 10A chip. It's probably toast, but it couldn't hurt to check.

My next try will be with a Hammond 1650B box and maybe an Iron Lung OKR T-10 Breakout board. If anyone has an opinion on these please post it. Thanks

 

[been there]

Well if nothing else you see the importance of fuses .

 

[Zanderist]

This is the one issue I have building with Altoids cases, though I tried a wooden box build once...but it's the size of a brick. In the future, just a thought off the top of my head, paint the inside with some model glue which will turn into and insulator when it dries.

The worst though is with a mosfet build and you don't pick up on that the ground of the battery is some how touching the tin bypassing the mosfet altogether, you become convinced that the mosfet is defective.

 

[Dampmaskin]

If the current didn't go through the Raptor, I don't see why the Raptor would be fried.

 

[Visus]

^This

Its almost impossible to cook em, yeees if you put batts in wrong but other wise they are dang bulletproof.
It should be fine. That batt should be fine too as long as it did not drain below 2.5v during the event..
They can take upwards of 100A before they overheat and internal damage occurs..
If that was 100A or over, you mtl wouldn't have been able to shake it out(fusing) or your hand close to it.

Seems you caught it in the nick of time..

BTW sony vtc's its ~200A then damage occurs they are beasts in the battery market.

 

[erwincl56]

Well if nothing else you see the importance of fuses .

Most definately, like I said stupid (brain fart) mistake. I know better, when working with electronics you you don't rush things and take short cuts.

 

[erwincl56]

This is the one issue I have building with Altoids cases, though I tried a wooden box build once...but it's the size of a brick. In the future, just a thought off the top of my head, paint the inside with some model glue which will turn into and insulator when it dries.

The worst though is with a mosfet build and you don't pick up on that the ground of the battery is some how touching the tin bypassing the mosfet altogether, you become convinced that the mosfet is defective.

Yes I thought the same thing. On the next Altoids build some type of rubber coating would be a good Idea. Thanks

 

[erwincl56]

If the current didn't go through the Raptor, I don't see why the Raptor would be fried.

That's good to know. Thanks

 

[erwincl56]

^This

Its almost impossible to cook em, yeees if you put batts in wrong but other wise they are dang bulletproof.
It should be fine. That batt should be fine too as long as it did not drain below 2.5v during the event..
They can take upwards of 100A before they overheat and internal damage occurs..
If that was 100A or over, you mtl wouldn't have been able to shake it out(fusing) or your hand close to it.

Seems you caught it in the nick of time..

BTW sony vtc's its ~200A then damage occurs they are beasts in the battery market.

I got them out as soon the battery started to smoke. The battery is a little burnt on the positive end and the outer coating is a little frayed on the negative end, but it didn't have a big voltage drain. It's at 3.5V. Thanks