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re: Can an engineer or lithium battery expert make me feel better?
Posted on 8/2/24 at 10:53 am to Meauxjeaux
Posted on 8/2/24 at 10:53 am to Meauxjeaux
Also, it pisses me off that the counterfeits are that close looking to the real ones.
I know for sure I have a counterfeit Milwaukee battery now that I saw that testing the guy did. I thought I had bought a genuine Milwaukee replacement, but I’m sure now its not.
I know for sure I have a counterfeit Milwaukee battery now that I saw that testing the guy did. I thought I had bought a genuine Milwaukee replacement, but I’m sure now its not.
0
Posted on 8/2/24 at 10:58 am to Dallaswho
Isn't the protection inside of the individual cells?
Posted on 8/2/24 at 11:02 am to Turnblad85
quote:
Isn't the protection inside of the individual cells?
Never on power cells.
Only on individual “protected” type cells meant to go in flashlights and things.
Posted on 8/2/24 at 11:25 am to Dallaswho
guess I should scrap the idea of "harvesting" the remaining good cells out of my old dewalt batts for my headlights. 
Posted on 8/2/24 at 11:26 am to CAD703X
Would be great if Darwin stepped in here.
On another note, battery importation should be illegal.’n
On another note, battery importation should be illegal.’n
Posted on 8/2/24 at 11:32 am to TigerTatorTots
quote:
A co-worker had their house burn down earlier this year because the lithium batteries to his drills in his garage spontaneously exploded
A family friend's son had his house catch fire when a lithium battery lit up his attached garage and made its way to the interior before it was extinguished.
He was living in Kenner at the time and the FD was not all that far away.
Oh, and he no longer owns battery powered tools now, just internal combustion engines from now on.
Posted on 8/2/24 at 11:48 am to Meauxjeaux
I moved by Ego batteries indoors to keep them cool, but I still keep them on the charger most of the time. After reading this thread, am I correct in assuming that the fire hazard is caused by the internal short of the battery, so that it doesn't matter (as far as fire potential) whether the battery is stored inside in a temperature controlled environment or outside in the garage?
Obviously, the first thing I am going to do when I get home is remove the batteries from the chargers. If it makes no difference in the fire potential, I want to move them back into the garage as well so if there is a fire I might have a small chance to contain the fire.
Obviously, the first thing I am going to do when I get home is remove the batteries from the chargers. If it makes no difference in the fire potential, I want to move them back into the garage as well so if there is a fire I might have a small chance to contain the fire.
Posted on 8/2/24 at 11:55 am to Meauxjeaux
delete double post
This post was edited on 8/2/24 at 11:57 am
Posted on 8/2/24 at 11:57 am to CAD703X
Anyone have any good ideas of where to safely store these batteries? Metal trashcan? That would not be very convenient. Seems like the container would need to be enclosed but not sealed or you could get an explosion. Some that you could also charge in would be best.
Starting to wonder if I should just make a "charging shed" thats kept away from all other buildings. I know I will get lazy and leave batt laying around other places though.
Starting to wonder if I should just make a "charging shed" thats kept away from all other buildings. I know I will get lazy and leave batt laying around other places though.
Posted on 8/2/24 at 12:07 pm to CAD703X
I've got the big EGO battery for my push mower inside my house and I leave it on the charger. Should I be taking that thing off after a full charge?
Posted on 8/2/24 at 12:07 pm to CovingtonTiger
quote:
I moved by Ego batteries indoors to keep them cool, but I still keep them on the charger most of the time. After reading this thread, am I correct in assuming that the fire hazard is caused by the internal short of the battery, so that it doesn't matter (as far as fire potential) whether the battery is stored inside in a temperature controlled environment or outside in the garage?
Obviously, the first thing I am going to do when I get home is remove the batteries from the chargers. If it makes no difference in the fire potential, I want to move them back into the garage as well so if there is a fire I might have a small chance to contain the fire.
its a legit question. my brain tells me with potential live current going into the batteries at all times, if there is any elemental aspect such as humid conditions, excess heat, dirt, etc. that taking them off once they're charged and hanging them up away from power is a good idea.
i bought these little $5ish plastic 3d mounts designed for ego batteries and stuck them up on my wall
eta to the poster above, i would for sure take it off. better safe than sorry and that 7.5 ah is a beast.
This post was edited on 8/2/24 at 12:09 pm
Posted on 8/2/24 at 12:11 pm to Dallaswho
quote:
quote:
Every bit as important as name brand cells is the battery management system (BMS). Major international names like Bosch, Dewalt, Milwaukee
Can’t speak for other brands but none of my DeWalt batteries have any protection. They’re pinned straight to the tabs with just a little balancer.
The BMS is in the charger. There is more passive safety engineering in that simple pack than you realize. Everything from rigid QC of the intricacies of how the batteries are attached to the way they are contained.
Posted on 8/2/24 at 12:24 pm to tadman
Thank you for this thread.
Yes, my husband says he has three LI batteries 2 for his drills and one for something else, and he has been storing them in the Garage, with three cars and cans of gasoline. That's being changed as I type this.
We debated where to store the batteries...maybe build a cinderblock bldg away from all the out buildings?
In the old fireplace (solid brick, it's old, no plywood sheathing) that has a cast iron stove in front of it.
(Anyplace is better than the garage.)
And our golf cart has the old fashioned batteries, in part for lowering the center of gravity on our hillsides.
Again, thank you for this thread.
Yes, my husband says he has three LI batteries 2 for his drills and one for something else, and he has been storing them in the Garage, with three cars and cans of gasoline. That's being changed as I type this.
We debated where to store the batteries...maybe build a cinderblock bldg away from all the out buildings?
In the old fireplace (solid brick, it's old, no plywood sheathing) that has a cast iron stove in front of it.
(Anyplace is better than the garage.)
And our golf cart has the old fashioned batteries, in part for lowering the center of gravity on our hillsides.
Again, thank you for this thread.
Posted on 8/2/24 at 1:01 pm to CAD703X
Does the risk of fire or explosion only occur when there is a charge in the batteries?
Posted on 8/2/24 at 1:05 pm to CAD703X
quote:
The fire was contained to a standalone building that housed the country club's fleet of 70 golf carts and its pro shop, according to General Manager Michelle Yenni.
70 golf carts = 70 battery chargers. A frayed cable on a battery charger being yanked on/handled by 18-22 yr olds at the end of a long day in a hot arse cart room scares me a lot more than the battery it is charging.
Also (without reading the article) I would assume the majority of battery's in golf carts these days is still lead acid.
Posted on 8/2/24 at 1:19 pm to CAD703X
LiPo4 batteries are pretty safe. Cheap lithium ion batteries are killing machines but L-ion allow higher amperage draws for gapping ice cars at red lights. It's a trade off.
I've never had a Milwaukee battery go apeshit and try to kill me, though.
I've never had a Milwaukee battery go apeshit and try to kill me, though.
Posted on 8/2/24 at 1:27 pm to CAD703X
Im glad I didn’t watch the elevator video as it seems like, for a few on here, it’s one of those videos that gets burned into your brain for the rest of your life.
Same reason I never watched any of those gruesome terrorist beheading videos and the like. I don’t need that getting permanently downloaded into my soul.
Same reason I never watched any of those gruesome terrorist beheading videos and the like. I don’t need that getting permanently downloaded into my soul.
Posted on 8/2/24 at 1:29 pm to real turf fan
quote:
Yes, my husband says he has three LI batteries 2 for his drills and one for something else, and he has been storing them in the Garage, with three cars and cans of gasoline. That's being changed as I type this.
Stored cans of gasoline are a much a bigger issue inside of a closed garage.
quote:
In the old fireplace (solid brick, it's old, no plywood sheathing) that has a cast iron stove in front of it.
And the cast iron stove is statistically a bigger issue than all of the other items combined
Posted on 8/2/24 at 1:43 pm to Wabbit7
quote:
I've got the big EGO battery for my push mower inside my house and I leave it on the charger. Should I be taking that thing off after a full charge?
For best battery health and safety, you should only charge it to 40-80% for storage then top it off before use. More realistically, leave it at 60-80% for the off season. You’ll be fine.
Posted on 8/2/24 at 1:45 pm to Dallaswho
quote:
Batteries in EVs are safer than gas engines and their associated systems.
Based on what? There are far fewer specialized practices to put out an ICE vehicle fire vs an EV one. EV battery cells rupture and burn because the contents get exposed to air and the moisture in it. Gasoline and diesel does not. An ICE vehicle fire can be easily put out with a single fire truck whereas an EV fire will take tens of thousands of gallons more water and that's really to contain the fire as the water itself will keep the exothermic reaction going until the cells are exhausted. An EV fire will release all the same toxic fumes as an ICE vehicle plus the fumes released from the battery cells like hydrogen fluoride/cyanide/chloride. An EV fire is a much more serious hazmat incident.
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