🖼 Reply to “Pictures and nothing else” thread_2020_summer

[M.Hboards]

Pictures and Nothing Else!

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Wow that’s scary.

[BenjaminF]

Yep. As soon as I got the heat shrink off I knew it needed to go.

[b264]

Pictures and Nothing Else!

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just for search puposes LoL

keywords

recycle disassemble old battery nekkid fire hazard @BenjaminF

[BenjaminF]

@M.Hboards

scary

Couple bonus pics of the solder joints. Not a single joint on this battery stood up to a firm tug. I pulled the entire balance harness off in one go. Every solder joint popped right off.

[b264]

Would tossing that whole battery in light brine solution make it safe by discharging all the cells? Or would that be a massive fireball? LoL

[BenjaminF]

Im gonna defer to the mooch

@Battery_Mooch

How did this salt water thing ever get started?
Never, ever use this method.

We don’t need to discharge the packs in the first place. Just tape them up.
Salt water discharging is incredibly slow and causes electrolysis destruction of the tabs, exposing the inside of the cells and creating toxic sludge water if you let it go far enough, and never fully discharges the cells anyway. If the tabs are gone we have no way of confirming that the cells are discharged either.

It’s just not needed.

[tipsy]

why does it have a random blue cell there? xD

[BenjaminF]

Lol no clue. It was truly the poop icing on the shit cake. That battery was a disaster

[Fosterqc]

I thought it was mostly a good idea for cells that were already ruptured/shorting out and to just use normal water.

[Battery_Mooch]

For discharging or neutralizing or fire fighting?
Water or an aqueous firefighting solution is the preferred method for putting out a li-ion fire but won’t discharge a cell. I guess if the cell was open then water could dilute the nasty organic solvents inside but I’d be verrrrrrry worried about handling a ruptured cell that could short or easily catch fire.

[Fosterqc]

@Battery_Mooch

I’d be verrrrrrry worried about handling a ruptured cell that could short or easily catch fire.

yep that’s the situation where I would put it into a bucket of water or sand hopefully.

[BenjaminF]

I keep a 5gal bucket of sand in my workshop for firefighting purposes. Throwing water on zappy zaps doesnt seem like a great idea.

[Battery_Mooch]

There’s no metallic lithium in rechargeable li-ion cells though and water/aqueous solutions are the preferred way to fight li-ion fires. Their mass helps to quickly bring down the cell temperature to below the thermal runaway threshold, stopping the reaction.

Lithium-metal (typically non-rechargeable) cells do have metallic lithium in them though.

[Pedrodemio]

What BMS do you guys have here? Is something custom?

Pictures and Nothing Else!

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[Movation]

Do you have an etsy store?

[BenjaminF]

No?

[b264]

Pictures and Nothing Else!

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disclaimer: just a photo. I didn’t make this.

I’d bet there is a Onewheel XR in there somewhere.

[Nacho]

Pictures and Nothing Else!

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Sweet pics get that red beard dude

[DEEIF]

Yewwww RB is the picture god, but I’ve got a lot of work to put in to catch Brandon

[Battery_Mooch]

@jbshayward, an ESC and battery pack in each enclosure? I’m too much of an esk8 noob to recognize the logo, who makes them?

Pictures and Nothing Else!

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