connecting incandescent bulbs is safer. Using salt water the pole metals are ending up in the water and making it poisonous and depending where u live that water needs to be disposed of as hazardous
In my experience using saltwater the exposed poles become encrusted and sealed before the battery fully drains
Most hardware stores that sell battery tools will also accept cells for recycling. Many places require them to accept it by law but the people dealing with it are not expert so i like to make them as safe as possible - baged and taped cells
Thank you.
I was considering hooking up a 10ohm 100 watt resistor, but then decided that could be unwise, and decided to ask here.
I was reluctant to even pick it up, but couldnât just leave it where I left it after the accident.
Im basically one armed, having dislocated my shoulder, diving after my board to save it from salt water death.
Double fail.
Will do as you recommend, without cell disassembly.
I had each p42a wrapped in fishpaper, and the other fishpaper inside the enclosure expanded into ugly green mush.
Thanks again
Three things:
First, I dont think that dude submerged his pack in salt water intentionally. He is looking for advice on disposing of his water-damaged pack.
Second, youâre correct that no one should EVER be using salt water submersion to discharge a liion battery. I agree with your stated reasons.
Third, I disagree with your suggestion to discharge his pack with an incandescent bulb. Or discharging it at all, frankly. Itâs in an unknown dangerous condition. Attempting to discharge it is an extremely dangerous thing to do, and its also completely unnecessary.
For the record YOU DO NOT HAVE TO DISCHARGE LIION PACKS TO RECYCLE THEM, AND ITâS OFTENTIMES MORE DANGEROUS TO DO SO.
I think a possibly damaged battery ESPECIALLY should be discharged before handling it or giving to others to handle. Itâs up to the handler according to epa as far as discharging though
Leaving a pool of copper-filled water wouldnât be protecting health.
The 10s pack was unintentionally submerged.
It had discharged to 6.37v.
To what degree that discharge happened when submerged, vs the subsequent 3 days afterwards, is unknown.
I found the county hazardous waste recycler to take it to, but right now i have no strength or dexterity in my dominant hand, even if I could lift that arm without excruciating pain. So I likely just store it for a few days outside on bricks, on sand under a metal bucket.
I disagree. Discharging a damaged battery is extremely risky. Itâs definitely not something that I would be recommending to strangers on a public forum.
discharging damaged batteries before disposal is common. Especially if ur not going to follow the expensive procedures intended for disposal of a damaged battery involving buying a container for it and plan to just throw it in the general battery recycling it reduces risk.
Damaged batteries are supposed to be handled uniquely:
Iâm not going to let you drag me into the mud again john. Your battery advice is, once again, dangerous.
I encourage anyone reading this to disregard anything hummie says about batteries, particularly regarding battery safety. He has an extremely warped perspective, and likes to post links to âback up his pointâ that donât actually support his point, or are coming from sources that are just as ill-informed as he is.
Iâm not going to spend my time de-bunking him again. So consider this the semi-monthly esk8 news reminder to please ignore hummie.
Itâs far from just my advice and I posted multiple sources. u are not the authority
Officially, as I posted, a âdamagedâ battery needs to be packed in this box. I feel safer, and cheaper, discharging it fully and saving my money. If thatâs too complicated /dangerous for you âŚso be it.
Some chargers literally have a âdestroyâ button
I feel fine with my advice and discharging cells (damaged or not) before disposal is commonly done and understood as a good practice How to Discharge a LiPo Battery? method
https://www.rcgroups.com/forums/showthread.php?1638712-How-do-I-discharge-a-lipo-to-0v-for-disposal
Again, if thatâs too complicated or dangerous for you and you have a damaged battery, youâre supposed to NOT throw it in general recycling despite this advice being given.
IMO thereâs no energy left in a 10S pack that is at 6.37V to cause any trouble. Just prepare per @BenjaminF recommendations and recycle IMO.
Just saw this post on reddit:
https://www.reddit.com/r/18650masterrace/s/n9xxIdlDu9
Batteries wrapped in phase change material. Iâm not sure how hot batteries get for some of you nutjobs who really push the limits, but could be worth looking into?
Legally if itâs considered damaged, which it should be, itâs not legally put in general recycling. good thing it has no energy left in it and been discharged so canât be a danger.
Good point if using one of those Call2Recycle bins!
Yea, he should check what the policy is for the recycling location being used.
I did a bunch of testing with PCMâs and, if properly specâd, can really help with spreading out pulses of heat. The PCM takes in, essentially, the fast, shorter pulses of high temp and then slowly feeds lower temp heat back into the cell and the environment later on.
In the end, itâs better for the cell. But the cell is still being damaged as the heat is created inside of it. But its max temp is lower and that can help reduce damage.
That is, until the PCM becomes âheat soakedâ. Once it fully melts it starts rising in temp along with the pack.
Ubreakifix took my old Evolve pouch battery off my hands.
Thanks, I did see them listed in my zip code, and they are closer than the county collection center.
Iâm a bit confused. How do these materials keep their shape if they change phases? Are they in a container? Is the idea just that theyâre effective reservoirs for their weight because of the heat of fusion when they melt? Wonât that provide benefits for not long? I guess if youâre at extreme draw, the battery wonât last that long anyway, but I always thought exchanging heat would be better than just trying to put it in a reservoir.
Just moving the heat away can, and is, a very effective method for cooling cells. But itâs not always possible with some pack setups.
You called itâŚthe PCMâs change phases so they do melt and itâs all about the heat of fusion. You can do things like have a porous carbon pack frame and fill the pores with PCM. That way it retains its basic shape but some might still leak out if the pack is not sealed.
The PCM does need to be contained or the entire enclosure (with the pack in it) can be filled with PCM.
