thanks for rcvr team for running this experiment, one which a good number of people have yet to have an experience with a lipo reaction and probably have no idea what a reaction looks like
The problem with lipo fires is the reaction supplies it's own oxygen. That's why you can't just smoother it. Like they said in the video, you need something to break the reaction..
Thank you. I, like many others have that smaller Lipo pouch bag. Good to see it tested. This gave me some Ideas based on what I saw here: 1) Keep a smoke alarm IN the bag, you'd hear it if your in another room...which let's face it us what most people do. 2) Store less batteries per Lipo bag, have multiple bags with only 1 or 2 batteries in there. 3) Make note of total cell in your bag. If you know there is a 6s and a 3s in there. Count the pops off ass the burn up. If you haven't counted to 9, wait. 4) Would a sacrificial non-pressurised container of non-flamable expanding foam in the bag help. Idea: it breaks out of it's container from the heat of a broken cells, then quickly fills the bag volume with foam, thus reducing oxygen volume in the bag = more time to act and get that bag outside away from valuables.
I would love to see these on top of something flammable like carpet or wood to understand if these would be hot enough to burn material through the bag
@@GlobalSourcing I don't know if it's like that, but I imagine that there is some kind of buffer to the ground so it won't get hot to burn the ground where it's standing. But I don't know.
I ran a similar experiment with similar results. While not perfect, the lipo bags are a worthy investment that buy you time. Also thought of something else. How many of use bring a fire extinguisher when we fly? Another worthy investment. Shitty to lose a battery or plane but worse to light the surrounding area on fire.
I've just watched a video of a Lipo fire in an ammo case, you should probably get a Lipo bag unless you want your ammo tin spitting flames 2 foot in the air like a flame thrower
Just purchased one of these bags on Amazon and was wondering the same thing…do these bags perform as promised? Thank you so much for this important “community service experiment!” I feel much better about my purchase now👍🏼
I'm late to the party. But I wanted to show my daughter the seriousness behind lipo batteries. She just started flying heli's (high spirited 18 yr old😊). And she has learned ALOT...from this video. I read in the comments someone mentioned everyone needs to watch this video in the RC hobby. And he's 100% correct and I hope it shows upon search. Best video I've found and appreciate the time you guys have taken to educate us. You're making a difference, thank you!
Thank you for making this. What I have done is put each battery in it's own single fireproof bag and then put those into a bigger zip bag like you have. I wonder how they would do. Also interested in what a charge fire (while it is over charging) looks like. But this is super helpful!
Thanks for the video, I put mine in individual pouches inside the bigger bag to avoid a chain reaction. Your experiment reassured me that it should be relatively safe.
9:50 why .. at 3.8volt they won't burn? or hardly? 20:00 IF they would catch real fire, maybe they would burn all together quickly, but since it's only smoking?
Hello, how are you? They will burn at 3.8 V per cell. Just the fire will be smaller and shorter. Because there is less energy stored in the packs that it would be if they were fully charged at 4.2 volts per cell. No fire is a good fire, but definitely a smaller fire is better than a big one.😂 Plus good maintenance and handling of the batteries such as not overcharging ,over discharging, overtasking the batteries and maintain them at storage voltage and balance just makes for a healthier battery, not very likely to just burst in flames all by itself.
Thank you for your demonstration. If you must put out or contain a lipo fire whether as a result of puncturing or overcharging, what is the best way (personal experience or published results) to do so? Pouring sand over? Submerging in water? Covering it with a bucket? Other?
If it happens, it will burn too hot to really put out, but it will only react for a short time. You mentioned covering with a bucket, yes, that will help protect items that are close and help smother remaining flames after the reaction. (metal bucket, not plastic). Basically, protect whatever you can, but when they go, you can't stop them. Keep the batteries and charge areas isolated as much as possible. Create a mental plan, know how to react, and don't panic. I keep a cheap mini BBQ grill with lid right where it needs to be. A cheap little grill is the best money you'll ever spend, if it is needed!
Great demonstration. Very important information. I have three of the box style lipo bag. I always store my lipos at storage voltage in those bags. And I don't charge unattended. 🤓
Another useful test world have been to surround the bag with something flammable, e.g. straw. After all, the objective of these bags is to prevent the fire spreading.
I'm looking for heat/fire and water protection for batteries, from in and out, that will be partially outside, thank you for making this video, very helpful!
The one thing I wanted to see ,was did the outside of the bag get hot enough to set fire to things on my desk? Paperwork , plastic items do the walls of the bag insulate as they are supposed to? Brilliant video thanks
What i took from this is to keep your batteries in separate bags, that way they can't set off other batteries. Might seam over kill but its better than losing all your batteries or you home or car.
Interesting test, BUT, if that bag was set on top of carpeting, would the bag have gotten hot enough to melt and ignite the carpeting, thus burning down a house?
Since we didn't test it on carpet inside a house I have no way to answer that question based on observable fact. If had to guess, I'd say no. The bag wasn't hot enough to initiate a fire on nearby combustible sources.
great video guys, I am getting back into RC after 40 years away. I've bought all the bits for my boat. I haven't purchased any batteries or charger yet. I am all spooked out now. I have purchase lips bags and will now buy a metal container to put lipo bags in. I am reading all the do and don'ts with lipo usage and safety. The lipo bag did burn as you said because you introduced oxygen. When its was still zipped up it did its job and gave you enough time to make the next safety move.
Don't be spooked. 4.2 max charge (4.15 for longevity) 3.8 storage (don't ignore this) 1-1.5c charge rate only (5c is abusive) 3.6v/c - stop flying 3.3v/c - stop flying right this instant
Thank you for sacrificing batteries for our benefit! It looked like the larger bag’s zipper is what burned, not the bag. Is that what you saw? Thank you.
Excellent video. I have a 10.4Ah lithium ion battery for a wheelchair which I'll be taking on an aeroplane and it was so good to see how well these bags help contain a damaged battery making it a bit of a no-brainer decision to get one. I appreciate it's a different tech but is it reasonable to assume that Lipo and Li-ion batteries behave similarly when damaged ie the bag will operate as effectively with a LI-ion battery? Perhaps airlines already use them but the effectiveness suggests that their use should be mandatory on flights.
I keep my lipos in a steel ammo can from the military surplus store. They're dirt cheap, and if they keep ammo safe im sure they can contain a few lipos
I like my old ammo cans to keep my lipos in. the "exploding" part, is 99% because the charger malfunctions, causing overcharge of the cells. When overcharged, they are explosive.
They are also explosive depending on who we’ll they are built. How tightly the pouch is sealed and how strong it is. I’ve seen tests where the cells to pop and make a bang. But most people who say “LiPo explosion” really are talking about round cells like are in e-bikes and computers. Those almost always make a loud pop. Just the nature of their design.
I use empty .50 cal. ammo-cans with installed overpressure release valves to store (and charge) my Li-Po packs. I either place these boxes on a concrete floor or on bricks, to prevent heat transfer to a combustible surface.
That was a great video, I always wondered how those bags would react. I also keep my batteries in a ammo box, curious how that would react in this scenario. Thanks again for the video.
@@Joneszee1969There is probably a gasket in the lid you can remove. It's to waterproof them for ammo, but will leave an air gap if you pull it. I'm using about 4 of these to store batteries, but fortunately have never had them tested. I'd like to see the results, too!
It's all about what chemistry Lithium cells you have. LiPo those bags will work fine for but if you have NMC, Li-NMC, LNMC, or NCM those are very violent that bag would not of contained the fire and the runaway is just as fast. I would recommend shielding if you want to pop one of those.
Just FYI, my first battery for the Phantom, was dropped and hit a rock. It most definitely did pop open like an explosion...not super loud but exploded open into one very big fire!
I wanted to thank you for doing this test. I would say there are a lot of people charging lipos on pine or ply shelves, wood work benches, etc.. Do you think that these surfaces might ignite. I was thinking it was too bad you did not chuck a board under the bag at the same time. I use a shelf made of drywall to give some extra fire resistance. I wonder if I should switch to concrete backer board for even more fire resistance.
I know it’s a ton of money but invested in an 800wh lithium sleeve from a company named cell block.. they market products for companies like ups fire departments defense ect huge lithium batteries.. I also have one of the boxes.. again it all depends on how much want to spend is it worth it.
I have personal experience with this phenomenon with an E-Bike project I had some time back. One of the batteries got shorted to ground and exploded, but none of the other batteries, including the one DIRECTLY ON TOP, so much as flinched throughout the whole ordeal. Not at the time, nor in continued service 🤷
I've seen people recommend a metal ammo box. I'd like to see somebody test that with the lid open a crack, vs with holes drilled, vs unmodified and sealed shut except for minimal holes for charging wires.
I saw a "test" from some company trying to sell their safe box showing the ammo cans would just explode, but they intentionally didn't modify the cans. The trick to keeping them safe is apparently to remove the rubber gasket allowing pressure to vent but not much airflow. I'll dig around and see if I can find the videos again but I think they might have been removed by now.
@@raztaz826 I tried pasting a link but the spam filter must've blocked it, youtube is notoriously bad about letting you link to things in comments. The video title is "How to store LiPo battery safely - In depth LiPo fire tests" and includes an ammo box left open, closed with no seal, closed with seal, and with a bag of sand on top of an open can as an attempt to auto-smother the fire.
Could have added a test putting a stack of newspaper on the bottom and let's see if the heat is also insulated or dampened enough that there is no secondary fires generated outside of the bag.
Thank you so much for taking the risks for our education. I only charge outside, apart from the little 1S for indoor whoop flying which are charged in my office in a tin.
A lot of newer batteries use a different chemical make up in lipos that produce more smoke than fire and I have noticed that fully charged or used around 3.6v a cell they still will burn almost the same if they go up but yes a fully charged batt is less stable sitting around.
@@RCVideoReviews Cool! I'm new to the hobby and the channel and I like waht I see. Except the FAA which has no place here and these little IED's we use for batteries. I'd like to see something safer.
Those batteries did cost $$, but we burned batteries that had been taken out of flight service due to age/puffiness etc... You're welcome for the video...
Double bagged and in 50cal ammo cans, that is how i roll for my FPV Batteries. Although i have never seen or heard of one blowing just sitting in storage. Awesome test. 👍👍🇺🇸
I would think an ammo box would work even better and they cost about the same, however I wonder if a battery caught on fire in a sealed ammo case if it would make the case explode? Venting the case by drilling holes in it would fix this problem.
After watching a couple of videos about putting out a lithium battery fire, it has been the introduction of salt, allowing the battery to discharge faster and reduce the resultant fire. The water/ salt cool the batteries and shorts them as well. That would be an interesting test. What do you think?
Thanks for the response but I didn’t want you to think that it was a negative comment. What I was saying that I had read a report that suggested a bag of salt crystals is kept at the base of the container. If water is introduced to cool / reduce the heat, the salt mixes with it to render the cells inert quickly. I only asked your opinion, nothing else. Have a good day.
I think with ebike batteries, there are far more cells and usually encase in a metal casing, which when the gases build up inside the casing could cause an actual explosion?
We considered the fact overcharging would require a purposeful misuse of a charger where a puncture could be unintentional. That said, we intend on a v2 video where we'll put the overcharge to the test as well.
Batteries deflagrate, they don’t explode or detonate. However, in some cases from the viewpoint of the on-looker, it does appear to have been an explosion.
The bag catching fire has to be a fail. While it certainly bought time in a supervised situation, like charging, storage, unattended, that would be a fail. But that brings up an interesting question. Is the bag only needed when charging, or is there a significant risk in storage, at storage voltages?
It didn't catch fire until we opened it. The bag did it's job. Storage voltage results in substantially less potential energy. I personally do not store lipos in bags, but I know people do. I don't believe it's necessary as every shipped lipo I've ever seen came in bubble wrap and a cardboard box. If there was a known issue with lipos in a storage state, they would take different precautions. Personally, I believe the issues arise when: 1) The cell has been compromised - i.e. It's been physically damaged as in a plane wreck. 2) The cell has been over charged - i.e. Wrong charge profile used as every modern balance charge I've ever used limits peak voltage to 4.2v/c. So it comes down to misuse of the charger.
I'm going to say the material that is around the zipper is what was on fire and on the first bag ignited when oxygen was introduced I think a lot of times when we get the fire right off the bat I think multiple cells erupt at once excellent video guys I shed a couple tears 🥲when I seen Good batteries being used but it was for the best👍🏻🤠
the basic idea of the video is good but the main point of the bags is about containing the heat and fire. Ideally a heat camera view would be interesting or putting some wood next to the lipo bag when it goes off to the how the environment is protected.
This test was more to see how the bags would react, if it would work or not. If it would do what they say it will and actually it did. The Nail on the battery was just the way to get it started. Even though it's a good Demonstration of an airplane crashing and having the battery shove itself on the motor mount screws in the firewall, so there is some relevants to the nail. We were already talking about doing the other scenario Which is the overcharging of the battery or the incorrect Method of charging the battery, will she. I hope everybody got something out of this video I think it was interesting. And by the way, not all lipo fires are the same. So be very aware. They can be a lot more intense under different conditions. Just be careful.
Hi I'm new to fpv. I have a question. I have a charger that put the batteries into storage voltage. After they are in storage voltage and I unplug them from the charger how long will they stay in storage voltage before I have to do it again?
I Did learn something today. (Oh, wait... that's a different channel. 😁) I too expected a quicker chain reaction. Seeing an unburned pack right next to a burned one was a surprise.
I had one caught fire while charging I immediately dropped it into a bucket of water . Fire went out in about. 5 seconds left it in there for 3 hours then dug a hole and buried it. I emailed local council for information on disposal . They replied that they had no information and told me to contact the manufacturer
@@hayloft3834the bucket likely just cooled the battery fast enough to stop the reaction. With EVs there’s just too much thermal mass there for that to happen.
I had a battery burn my quad and the whole battery looked toast, it turned out one cell and I had the best 5 cell battery ever, after that. It's still good and strong.
Every single person in any part of the greater RC hobby needs to watch this video! Thanks for this video, guys! Well done!
I 100% agree. Thank you.
thanks for rcvr team for running this experiment, one which a good number of people have yet to have an experience with a lipo reaction and probably have no idea what a reaction looks like
I've seen a couple of lipo fires, but this taught me quite a bit.
The bags performed better than I thought. Fire only happens when Oxygen is introduced by opening the bag. Good job guys, I leaned a lot. Thanks
The problem with lipo fires is the reaction supplies it's own oxygen. That's why you can't just smoother it. Like they said in the video, you need something to break the reaction..
@@cflin4637 is it the same with lithium?
Thank you. I, like many others have that smaller Lipo pouch bag. Good to see it tested.
This gave me some Ideas based on what I saw here:
1) Keep a smoke alarm IN the bag, you'd hear it if your in another room...which let's face it us what most people do.
2) Store less batteries per Lipo bag, have multiple bags with only 1 or 2 batteries in there.
3) Make note of total cell in your bag. If you know there is a 6s and a 3s in there. Count the pops off ass the burn up. If you haven't counted to 9, wait.
4) Would a sacrificial non-pressurised container of non-flamable expanding foam in the bag help. Idea: it breaks out of it's container from the heat of a broken cells, then quickly fills the bag volume with foam, thus reducing oxygen volume in the bag = more time to act and get that bag outside away from valuables.
I would love to see these on top of something flammable like carpet or wood to understand if these would be hot enough to burn material through the bag
@@GlobalSourcing I don't know if it's like that, but I imagine that there is some kind of buffer to the ground so it won't get hot to burn the ground where it's standing. But I don't know.
You would have to be very dumb to store a bag full of batteries on a flammable surface. Bag goes on a concrete or metal surface.
Thanks boys. I treat them with respect. For sure! Thanks for the sacrifices!!
Im buying me a lipo bag for my filing cabinet.
I ran a similar experiment with similar results. While not perfect, the lipo bags are a worthy investment that buy you time. Also thought of something else. How many of use bring a fire extinguisher when we fly? Another worthy investment. Shitty to lose a battery or plane but worse to light the surrounding area on fire.
Nice job guys. I usually store my batteries in an ammo case
I've just watched a video of a Lipo fire in an ammo case, you should probably get a Lipo bag unless you want your ammo tin spitting flames 2 foot in the air like a flame thrower
@@dannyherbert4482 🥴😵💫😮😧
Does this work for lithium ion or just lipo
Getting a bag right now!!! I’ve got a few older batteries and I’m convinced these work!! Great video man.
I ordered a replacement for the bag I destroyed in the video.
@@RCVideoReviews good review and great realism of how the bags react. They seem strong!!
This gives me much more confidence in my lipo bags. Thanks guys 👌
Just purchased one of these bags on Amazon and was wondering the same thing…do these bags perform as promised? Thank you so much for this important “community service experiment!” I feel much better about my purchase now👍🏼
I'm late to the party. But I wanted to show my daughter the seriousness behind lipo batteries. She just started flying heli's (high spirited 18 yr old😊). And she has learned ALOT...from this video. I read in the comments someone mentioned everyone needs to watch this video in the RC hobby. And he's 100% correct and I hope it shows upon search. Best video I've found and appreciate the time you guys have taken to educate us. You're making a difference, thank you!
Glad to hear the video is helpful, that's what it's all about!
21:15 Smoke is intelligent form of life. Whenever you have barbecue, camp fire or lipo burn, it will find you. 🙂
You know it.😂
Thank you for making this. What I have done is put each battery in it's own single fireproof bag and then put those into a bigger zip bag like you have. I wonder how they would do. Also interested in what a charge fire (while it is over charging) looks like.
But this is super helpful!
I'm going to do a v2 video with some of the more common requests. Thanks for taking the time to leave a suggestion.
I put 3 in a bag and then 3 bags in an ammo box.
@@RCVideoReviews by chance do you have a timeline of when? Thank you for the information
Thanks for the video, I put mine in individual pouches inside the bigger bag to avoid a chain reaction. Your experiment reassured me that it should be relatively safe.
Even more protection--doesn't hurt. Good plan.
Good idea, I use those “Bat Box’s”. I should probably have lipos in individual bags inside.
9:50 why .. at 3.8volt they won't burn? or hardly? 20:00 IF they would catch real fire, maybe they would burn all together quickly, but since it's only smoking?
Hello, how are you? They will burn at 3.8 V per cell. Just the fire will be smaller and shorter. Because there is less energy stored in the packs that it would be if they were fully charged at 4.2 volts per cell. No fire is a good fire, but definitely a smaller fire is better than a big one.😂 Plus good maintenance and handling of the batteries such as not overcharging ,over discharging, overtasking the batteries and maintain them at storage voltage and balance just makes for a healthier battery, not very likely to just burst in flames all by itself.
Thanks for this video. I learned that even if one cell goes it does not mean all will go. Regards from New Zealand
I was very surprised at this outcome. Thanks for the comment.
Thank you for your demonstration.
If you must put out or contain a lipo fire whether as a result of puncturing or overcharging, what is the best way (personal experience or published results) to do so? Pouring sand over? Submerging in water? Covering it with a bucket? Other?
If it happens, it will burn too hot to really put out, but it will only react for a short time. You mentioned covering with a bucket, yes, that will help protect items that are close and help smother remaining flames after the reaction. (metal bucket, not plastic). Basically, protect whatever you can, but when they go, you can't stop them. Keep the batteries and charge areas isolated as much as possible. Create a mental plan, know how to react, and don't panic. I keep a cheap mini BBQ grill with lid right where it needs to be. A cheap little grill is the best money you'll ever spend, if it is needed!
Great demonstration. Very important information. I have three of the box style lipo bag. I always store my lipos at storage voltage in those bags. And I don't charge unattended. 🤓
Another useful test world have been to surround the bag with something flammable, e.g. straw.
After all, the objective of these bags is to prevent the fire spreading.
Great test and showing that these bags do help and increase the safety factor.
Big time!
must watch thing , thanks guys for all this effore , a like is not enough .. i give full it full credit
Much appreciated!
I'm looking for heat/fire and water protection for batteries, from in and out, that will be partially outside, thank you for making this video, very helpful!
Lots of people like ammo cans. I would probably want to provide some kind of ventilation for those though.
Do they make Lipo bags that will hold a Tesla? 😂
@@farmerjohn2262 that’s funny!!!
The one thing I wanted to see ,was did the outside of the bag get hot enough to set fire to things on my desk? Paperwork , plastic items do the walls of the bag insulate as they are supposed to?
Brilliant video thanks
We're going to do a v2 video. Keep an eye on the channel.
What i took from this is to keep your batteries in separate bags, that way they can't set off other batteries. Might seam over kill but its better than losing all your batteries or you home or car.
could you test with full discharged batteries. Is this safe when battery has no energy.
I am planning a v2 of this video. So keep an eye out on the channel.
This is a must watch!!!! Thank you so much.
You're welcome!
A test I'd like to see is if they stabilize inside the bag - i.e. leave it for 24 hours closed - does it ignite when you open it?
I really appreciate that you did this video. I have battery bags and was very curious to see good testing on them. Great job. Good content.
Thank you!
Interesting test, BUT, if that bag was set on top of carpeting, would the bag have gotten hot enough to melt and ignite the carpeting, thus burning down a house?
Since we didn't test it on carpet inside a house I have no way to answer that question based on observable fact.
If had to guess, I'd say no. The bag wasn't hot enough to initiate a fire on nearby combustible sources.
great video guys, I am getting back into RC after 40 years away. I've bought all the bits for my boat. I haven't purchased any batteries or charger yet. I am all spooked out now. I have purchase lips bags and will now buy a metal container to put lipo bags in. I am reading all the do and don'ts with lipo usage and safety. The lipo bag did burn as you said because you introduced oxygen. When its was still zipped up it did its job and gave you enough time to make the next safety move.
Don't be spooked.
4.2 max charge (4.15 for longevity)
3.8 storage (don't ignore this)
1-1.5c charge rate only (5c is abusive)
3.6v/c - stop flying
3.3v/c - stop flying right this instant
Thank you for sacrificing batteries for our benefit! It looked like the larger bag’s zipper is what burned, not the bag.
Is that what you saw?
Thank you.
The teeth on the zipper survived. The zipper material separated from the bag. The fire probably burned the thread allowing the two materials part.
Excellent video. I have a 10.4Ah lithium ion battery for a wheelchair which I'll be taking on an aeroplane and it was so good to see how well these bags help contain a damaged battery making it a bit of a no-brainer decision to get one. I appreciate it's a different tech but is it reasonable to assume that Lipo and Li-ion batteries behave similarly when damaged ie the bag will operate as effectively with a LI-ion battery? Perhaps airlines already use them but the effectiveness suggests that their use should be mandatory on flights.
I keep my lipos in a steel ammo can from the military surplus store. They're dirt cheap, and if they keep ammo safe im sure they can contain a few lipos
Thanks for taking the time to show this guys!
I like my old ammo cans to keep my lipos in. the "exploding" part, is 99% because the charger malfunctions, causing overcharge of the cells. When overcharged, they are explosive.
They are also explosive depending on who we’ll they are built. How tightly the pouch is sealed and how strong it is. I’ve seen tests where the cells to pop and make a bang. But most people who say “LiPo explosion” really are talking about round cells like are in e-bikes and computers. Those almost always make a loud pop. Just the nature of their design.
I use empty .50 cal. ammo-cans with installed overpressure release valves to store (and charge) my Li-Po packs. I either place these boxes on a concrete floor or on bricks, to prevent heat transfer to a combustible surface.
Any ideas on where or how to dispose? My local shop doesn't dispose them anymore.
Watch this: ua-cam.com/video/_9Sw8RpYHwM/v-deo.html
I would be curious to see the difference between a 4.2V/cell and a storage voltage battery.
Thank you. Great test. I've always assumed that the fire would become uncontrollable with multiple batteries. It's good to know the bags work.
You're welcome.
I literally just opened that exact lipo bag today... Guess i'm about to find out if I need to return it
I think you'll be happy with it.
I use bags inside a metal ammo box. That would've been a good addition as well as I've heard the ammo boxes are really good as well
That was a great video, I always wondered how those bags would react. I also keep my batteries in a ammo box, curious how that would react in this scenario. Thanks again for the video.
You should make sure the ammo box is vented somehow. You don't want to build a lipo bomb.
You're welcome.
@@js32257 yes, I always leave the top unlocked and cracked open a little…
@@Joneszee1969There is probably a gasket in the lid you can remove. It's to waterproof them for ammo, but will leave an air gap if you pull it.
I'm using about 4 of these to store batteries, but fortunately have never had them tested. I'd like to see the results, too!
I would also surround the batteries with sand-filled ziplock bags, to assist with extinguishing any fires.
GREAT VIDEO GUYS!!!
Appreciate the support!
Man. I dont think that bag would work. But this test shows that it does. Thanks for the video!
Ditto. I thought a lipo fire would cut through these bags quick.
@@RCVideoReviews or is it because battery technology has improved? 🤔 Less fire, more smoke
Makes me add trying to think about reducing smoke damage. Have seen box that has smoke filter.
Probably a good idea because the fumes are dangerous and it stinks.
Now i am more confident on my lipo bags
11:06 we can see fire.
Thanks for the video
It's all about what chemistry Lithium cells you have. LiPo those bags will work fine for but if you have NMC, Li-NMC, LNMC, or NCM those are very violent that bag would not of contained the fire and the runaway is just as fast. I would recommend shielding if you want to pop one of those.
Just FYI, my first battery for the Phantom, was dropped and hit a rock. It most definitely did pop open like an explosion...not super loud but exploded open into one very big fire!
Yikes!
I wanted to thank you for doing this test. I would say there are a lot of people charging lipos on pine or ply shelves, wood work benches, etc.. Do you think that these surfaces might ignite. I was thinking it was too bad you did not chuck a board under the bag at the same time. I use a shelf made of drywall to give some extra fire resistance. I wonder if I should switch to concrete backer board for even more fire resistance.
Very useful video.
Sharing this with my flying buddies.
Thanks!
I know it’s a ton of money but invested in an 800wh lithium sleeve from a company named cell block.. they market products for companies like ups fire departments defense ect huge lithium batteries.. I also have one of the boxes.. again it all depends on how much want to spend is it worth it.
I have personal experience with this phenomenon with an E-Bike project I had some time back. One of the batteries got shorted to ground and exploded, but none of the other batteries, including the one DIRECTLY ON TOP, so much as flinched throughout the whole ordeal. Not at the time, nor in continued service 🤷
I have ten small 1s batteries. I think this bag will cope with them if something happens
Thank you for tested these!
Very Helpful.
Now i want to overcharge a lipo under water, what will happen?
Hmmmmmmmm
I've seen people recommend a metal ammo box. I'd like to see somebody test that with the lid open a crack, vs with holes drilled, vs unmodified and sealed shut except for minimal holes for charging wires.
I saw a "test" from some company trying to sell their safe box showing the ammo cans would just explode, but they intentionally didn't modify the cans. The trick to keeping them safe is apparently to remove the rubber gasket allowing pressure to vent but not much airflow. I'll dig around and see if I can find the videos again but I think they might have been removed by now.
@@AchronTimeless Neat. That's what I've been told elsewhere about ammo boxes, but I've never seen it tested.
@@raztaz826 I tried pasting a link but the spam filter must've blocked it, youtube is notoriously bad about letting you link to things in comments. The video title is "How to store LiPo battery safely - In depth LiPo fire tests" and includes an ammo box left open, closed with no seal, closed with seal, and with a bag of sand on top of an open can as an attempt to auto-smother the fire.
@@AchronTimelessthanks!
Could have added a test putting a stack of newspaper on the bottom and let's see if the heat is also insulated or dampened enough that there is no secondary fires generated outside of the bag.
Thank you so much for taking the risks for our education. I only charge outside, apart from the little 1S for indoor whoop flying which are charged in my office in a tin.
You're welcome. Glad to help.
A lot of newer batteries use a different chemical make up in lipos that produce more smoke than fire and I have noticed that fully charged or used around 3.6v a cell they still will burn almost the same if they go up but yes a fully charged batt is less stable sitting around.
Now do the same thing with ammo cans, and other things that modelers commonly use to store batteries. Excellent video. Subscribed.
We are planning a round 2 of this video featuring a few different containers and fire inducing tactics.
@@RCVideoReviews Cool! I'm new to the hobby and the channel and I like waht I see. Except the FAA which has no place here and these little IED's we use for batteries. I'd like to see something safer.
Can you put fires out with a fire blanket?
I just received some bags and was wondering the same thing lol thanks for the test
Great demonstration!!
Thank you.
Thank you for the video. The price of burning all those batteries probably add up quick!
Those batteries did cost $$, but we burned batteries that had been taken out of flight service due to age/puffiness etc...
You're welcome for the video...
I think this video will save so much damage and very likely save lives. Cheers lads.
Double bagged and in 50cal ammo cans, that is how i roll for my FPV Batteries. Although i have never seen or heard of one blowing just sitting in storage.
Awesome test. 👍👍🇺🇸
Ha, I have the small bag from your video, I'm glad it does its job! Thank you very much for the test!
You're welcome!
Thanks this an excellent video, I wondered just how well the Lipo bags work, really good is the answer.
They surprised me--that's for sure.
So if this happens in your house, is it best to leave it alone or try and cover in sand?
If it happened inside a house I would do whatever I had to do to get it outside the house.
Great informative video. I just wanna know, were the batteries fully or storage charged? Sorry if it was mentioned
Fully charged
The bag is pretty impressive, it stops the chain reaction when the bag is closed and the oxygen is used up.
Yeah, it is impressive tech to contain that much energy.
Thank you for this vlog!! This is one of the best !!
John friend’s commentary is priceless.
I would think an ammo box would work even better and they cost about the same, however I wonder if a battery caught on fire in a sealed ammo case if it would make the case explode? Venting the case by drilling holes in it would fix this problem.
I use both of those bags. Excellent experiment. Thanks
i admire your courage to be there with so much bad smell. Thanks for the video it's good educational video
Great video!
Next test idea: Put flamable material next to the bag to simulate an incident inside a car.
After watching a couple of videos about putting out a lithium battery fire, it has been the introduction of salt, allowing the battery to discharge faster and reduce the resultant fire. The water/ salt cool the batteries and shorts them as well. That would be an interesting test. What do you think?
It doesn't sound practical to keep enough salt handy in all situations to rely on it. Frankly, if you're concerned about it, use a metal can.
Thanks for the response but I didn’t want you to think that it was a negative comment. What I was saying that I had read a report that suggested a bag of salt crystals is kept at the base of the container. If water is introduced to cool / reduce the heat, the salt mixes with it to render the cells inert quickly. I only asked your opinion, nothing else. Have a good day.
I didn't think it was a negative comment, just impractical.
I didn’t read it as a negative comment
very nice..
I store batteries in ammo boxes..
I wonder how they would go.. one even has a breather hole..
I think with ebike batteries, there are far more cells and usually encase in a metal casing, which when the gases build up inside the casing could cause an actual explosion?
I don't think I would want these in an airtight metal box.
It's great if you can take the lithium pack out. But sometimes they are non removable.
They burn better and much hotter if you set them off by severely overcharging.
We considered the fact overcharging would require a purposeful misuse of a charger where a puncture could be unintentional.
That said, we intend on a v2 video where we'll put the overcharge to the test as well.
Good video but for a test like this - gloves wise get some stick welding gloves. Those mechanics gloves offer very little protection
good video on Batt safety, if your cheap, i see, you can still use the battery connectors Tx30 ect,.
Batteries deflagrate, they don’t explode or detonate. However, in some cases from the viewpoint of the on-looker, it does appear to have been an explosion.
The bag catching fire has to be a fail. While it certainly bought time in a supervised situation, like charging, storage, unattended, that would be a fail. But that brings up an interesting question. Is the bag only needed when charging, or is there a significant risk in storage, at storage voltages?
It didn't catch fire until we opened it. The bag did it's job.
Storage voltage results in substantially less potential energy. I personally do not store lipos in bags, but I know people do. I don't believe it's necessary as every shipped lipo I've ever seen came in bubble wrap and a cardboard box. If there was a known issue with lipos in a storage state, they would take different precautions.
Personally, I believe the issues arise when:
1) The cell has been compromised - i.e. It's been physically damaged as in a plane wreck.
2) The cell has been over charged - i.e. Wrong charge profile used as every modern balance charge I've ever used limits peak voltage to 4.2v/c. So it comes down to misuse of the charger.
Thank you for burning money and destroying your patio. Seriously, very much appreciated!
No worries!
I'm going to say the material that is around the zipper is what was on fire and on the first bag ignited when oxygen was introduced I think a lot of times when we get the fire right off the bat I think multiple cells erupt at once excellent video guys I shed a couple tears 🥲when I seen Good batteries being used but it was for the best👍🏻🤠
Yeah, it was for safety education. So worth it.
the basic idea of the video is good but the main point of the bags is about containing the heat and fire. Ideally a heat camera view would be interesting or putting some wood next to the lipo bag when it goes off to the how the environment is protected.
I always figured with these that it would give me time to toss the bag out of the house or car..They do work.
This test was more to see how the bags would react, if it would work or not. If it would do what they say it will and actually it did. The Nail on the battery was just the way to get it started. Even though it's a good Demonstration of an airplane crashing and having the battery shove itself on the motor mount screws in the firewall, so there is some relevants to the nail. We were already talking about doing the other scenario Which is the overcharging of the battery or the incorrect Method of charging the battery, will she. I hope everybody got something out of this video I think it was interesting. And by the way, not all lipo fires are the same. So be very aware. They can be a lot more intense under different conditions. Just be careful.
Hi I'm new to fpv. I have a question. I have a charger that put the batteries into storage voltage. After they are in storage voltage and I unplug them from the charger how long will they stay in storage voltage before I have to do it again?
I don't have the patience in my life to run that test. In other words--for a very very long time.
Great video. Thanks.
Appreciate the kind words!
I Did learn something today. (Oh, wait... that's a different channel. 😁) I too expected a quicker chain reaction. Seeing an unburned pack right next to a burned one was a surprise.
I had one caught fire while charging I immediately dropped it into a bucket of water . Fire went out in about. 5 seconds left it in there for 3 hours then dug a hole and buried it. I emailed local council for information on disposal . They replied that they had no information and told me to contact the manufacturer
Ocne they're burned out/fully discharged, they're inert. You can recycle what you can and toss the rubbish.
@@hayloft3834the bucket likely just cooled the battery fast enough to stop the reaction. With EVs there’s just too much thermal mass there for that to happen.
Thanks, very helpful
You're welcome!
I had a battery burn my quad and the whole battery looked toast, it turned out one cell and I had the best 5 cell battery ever, after that. It's still good and strong.
Nice to know. Thanks.
Sure thing.