Thanks for the information, very practical and of great value. I have numerous work batteries, and disability scooter batteries much larger than the ones you have. I have been concerned how I can safely charge and transport them without constantly having to worry about them. Now I can review a way to do it safely. All the best.

I used cement board to line and space out my tool box. It got pretty heavy but well worth it after watching one catch on fire. I did set up a concrete bunker for home charging which really gives me more confidence in the charging. Thanks for the live demo.

Great idea... i have just got an ebike and was planning on putting the battery in one of those liposafe bags and that inside an ammo tin... I'll be adding drywall to it now as a third layer!

Excellent video and very timely. I was just considering how to update my lipo storage options. Looks like a weekend project to me!

Awesome! I put some wallboard dividers in my ammo box a few months ago. Glad to see this video and know I was on the right path.

This is great and exactly what I was looking for! I will be making one this weekend. You potentially saved my family and my house by making this video! You are a good man sir.

Thanks for sharing this useful video with us! I will make a box just like yours to make my batterystorage safer!!

'Pretty impressive innovation... Glad I took the time to watch. Thanks!

Excellent work Alex - I've been wanting to do something like this but wasn't sure how to go about it. Well done!

A lipo burns with more pressure and heat, so a more representative test would be nice. Other than that: interesting idea!

Alex, while this video has a little age on it, I am glad I came across it. I am always safe, and I always monitor my batteries during balance (I only balance) charging, but I can't babysit them 24/7, and while EXTREMELY rare, a battery sitting can just decide to go up. I have seen an increase lately in cells burning peoples garages, houses, etc (they are mostly user error, and proven as such, but still) and with those reports, user error or not, it makes me nervous as I keep all my batteries in the house. I have over 40 sitting on a shelf right now (I use TPU caps to cover the plugs, and have them arranged as to not even really touch each other). It just makes me nervous when I think about it, and this solution is perfect and even better than my ammo cans I use / have built. I have several metal toolboxes, big ones, that will be perfect. Thanks for the idea man!

very good advice alex, I often worry about my lipo's sat in the garage in a tin box. Not any more. I will be building my lipo safe box very soon. many htanks.

Awesome, many thanks. I was thinking how to line a box and didn't think of Gib as we call drywall in NZ.

Your not crazy! Your applying your knowledge and testing a practical idea, then sharing with us! This deserves constructive criticism to improve upon for all our safety. And so for that I thank you ! Storing my LIPo has caused me some concern even before my order arrives Arrrggh !

Just built my lipo battery box. Thanks for the guide.

Very informative! Great work.

This is brilliant Alex, don't know how I missed it! ATB Malc RCTVUK

... perfect idea Alex :-) Thumps up!

Awesome idea for a portable box. I have a storage vault I made in my shop out of Cinder block slabs and cement board.

Very good information! Thanks for sharing!!

Nice work Alex...

Great video! Made one myself using an ammo box and the glue you recommended. Instead of dry wall I used "fibre cast". It is like dry wall but more rigid and has even better fire protection properties. I don't know how to exactly translate that stuff to english but if you check for fermacell you will find the product.

Brilliant! Thanks for sharing.

Nice job. Very smart choice.

Awesome awesome video, thank you so much. 👍👍👍👌

Great vid bro!👍👍👍👌

Im going to use this info to make a dual battery box for my 40 ah ces lithium car audio batteries. Thanks a lot for making this video.

I need to make 1 of those cause I have some lipos battery in my apt and I dont want to get a fire when the apt its alone when I I working thanks for this video.

Great idea!!!Also, the green sheet rock(water and fire proof will work) even backerboard .

great stuff !

I work in the building trade in the u.k. , there are modern substitutes for asbestos sheet , specifically used to stop fire spread inside buildings, the main one is called "supalux ", they also manufacture intumescent mastic which can be used to seal between the boards

OMG, Thank you so much!!!

0:45 Basic 1/2" drywall is only has a 30 (or 60?) minute rating. Need Type X or Type C for longer ratings. They are tested up to 800C at 30 min and 1000 C at 2 hours. A lithium battery fire erupts at 500C and "Measured flame temperatures as high as 1069 °C for single cells [8] and 1500 °C for a battery module". So, the battery burns hotter but a much shorter duration, Source 1: Most Type X drywall has a one-hour fire rating. The fire rating for the 1/2-inch drywall used throughout the rest of the home is 30 minutes. Source 2: Regular Drywall The most commonly used type of drywall in home construction is regular drywall made of gypsum plaster. This variety serves as a base for interior paint application and comes in various thicknesses including five-eighths-inch, half-inch, three-eighths-inch, and quarter-inch panels. Half-inch panels, also called lightweight drywall, are the most common because they are easier to transport and handle. These are able to resist burning for up to one hour. Type X Drywall Type X is one of two types of fire-rated drywall specifically manufactured with special additives to provide superior mold, mildew, and fire protection. Type X drywall is usually made from thin sheets five-eighths of an inch thick that resist burning for up to two hours when applied in a single layer to both sides of standard wood framing in a house. Type C Drywall Type C drywall is also fire-rated and provides superior fire resistance compared to Type X. Depending on the project, Type C will resist burning for up to four hours. It also features a smooth surface that is very easy to paint.

I tried this with a .50 Cal ammo box. It is difficult to get the drywall to fit tight without any of it coming apart (crushing). The ammo can's corners have to round the edges for the bottom piece to fit, but the pieces for the width don't want to fit tight all the way because the ammo can isn't square enough for that. Making the individual compartments is almost impossible unless you use a table saw of some kind to get things square enough to begin with. Multiple compartments, for multiple batteries. The pressure from just one lipo fire on a medium to large battery is immense! I've seen a few 4s 3200mah (in an rc plane), and 6s 3850 (in a bag) lipos go into overload and catch fire! The sealant I used was from ACE Hardware. Rutland 500 deg RTV silicone sealant for repairing grills, cookers, gas stoves, furnaces, etc. Good luck to anyone who builds their box.

For smaller batteries, I'm thinking of small fire-safe bags inside of an ammo box. Difficult to trust the fire-safe bags alone because some burn through, so the ammo box contains the small failure. I'll add a piece of drywall on the bottom because that's the only surface to possibly contact a wooden table.

Would love to see a video on an adequate charging box!

Great idea Thanks

Would like to see you do a test with a small tool box with sheet rock and close the box to see what happens when left alone. Can we use hardy also? Great video, I have not seen any videos on how to make a home made box. I am going to make a battery box because I have been a little worried about them.

Alex, I was so impressed with your battery box video that I went to Home Depot, purchased a toolbox and 3/4" drywall and built my own box. I intend to use my storage box for storage and transport only, not for charging. I am very interested in what type of fireproof enclosure you actually charge your LiPo batteries. Thanks, Sam

The concept of the fire box is timely and good. What is not needed is mixing yellow carpenters glue or PVA glue with urethane glue. Urethane glue all by itself is fine for it's job. You can also use the urethane glue on slightly moistened gyprock edges instead of plastic tape.

I did this but tripled up the drywall for added safety. I can’t store anything larger than a 9v though. DOH....... But seriously, great video

I'd be nervous of the polyurethane /PVA glue's integrity under real fire conditions, the test shown is fully vented, therefore the temperature developed in the test would be a lot lower than experienced in a real fire with the box closed. This also doesn't take account of overpressure likely to be produced in an enclosed lipo fire. Sheetrock is an excellent choice overall for the insulating material, but I'd be inclined to go with some form of mechanical fixing- e.g. screws, with sheetrock mud or jointing compound at joins to provide better fire resistance. Background to comments- fire safety engineer and fire service officer.

After seeing Electric bike batteries fire I’m gathering parts to do similar . Harbor Freight 26” tool box with 1/4” or 1/2” cement board and fire sealant . Drill hole for charge cord and smoke alarm attached . For charging or when not riding bike storage .

Love the idea! It seems to me it should be tested with a Lipos though. I imagine the fire intensity is a completely different level! Those fire bags do okay with a little battery in them,. but not at all with anything bigger.

Hey Alex great video I was just wondering do you have another piece of drywall that you put over the top or would that not really matter since you would not be able to glue that piece in ? ... Thanks for the awesome video very informative and helpful !!!

Excellent video, Alex -- thanks very much. Can you give an idea of how many batteries you store in that box at a time and what sizes they are?

I just built a DIY 72V 21Ah battery and its exactly what i need to make to sleep well. Thank you

Could you use hardiebacker instead of drywall?

A test of the actual box with real lipo batteries would be nice.

Very interesting, thanks! Incidentally, what is the name of the background music staring at 7:46?

8:46 Unfortunately, only the gasoline vapor ignites, so you can see on the back wall that there's no heat on the drywall until at perhaps 1/4" above the tissue paper wick. Given that a simple metal box is may avert disaster, one insulated with drywall should do well. (Oh, and I wouldn't advise to a fire test balances on a balcony railing. 😁)

Great video. Did you put drywall on the top of the box? What about air holes or vents to let the pressure out? What model tool box is that? Thanks?

hi, great idea. i intend to make one of these. but i ask, is a dry wall for the lid not necesary?

When You placed IT on the railing , i thought That the wind was Gonna blow IT down !

what about using fire bricks/tiles instead?

We have a glue called Construction glue and its ready mixed, foams and expands, and sets in about 20 minutes depending on outside temp. Is also very strong Nice idea with dry wall, but I would like too see how many off those sections are still up when a 5000mah lipo explodes. Also a burning lipo will cause so much heat in the box that the other lipo's will also ignite, I wiil just stick with my simple ammo box without its rubber seal

Will this work for an Ebike lithium battery? I will give this a try, thank you..

So I have a critique, but please take this like a friend saying hey..... "so I noticed you set your fire test on the rail... you are aware that if you had to use the fire extinguisher it could have pushed the fire off the rail onto what ever was below the deck, right?" bruh you're funny rotflol!

I dont think you thought this through; what you made is probably fire resistant, but when a lipo burns, fire is one problem, but it also produces a ton of expanding gasses very quickly. Call it an explosion if you want. This air pressure has been shown to be able to blow the lids even of well ventilated ammoboxes. In your design, that pressure has no where to go. The lid will be blown off and the room littered with tiny smoldering fragments of the lipo . Its surprisingly difficult to make a lipo container that is truly safe. I hate to say, as much as I respect your antenna work, your lipo container is no good. Give it a try, dont set fire to gasoline out in the open, but actually overcharge or overheat a lipo inside the box with the lid closed, and see what happens. BTW, creating heat insulating side walls will help very little. Even if your lid doesnt get blown off, the heat will spread inside the container through the top. I cant imagine the air inside not getting several 100C, which may well ignite the other lipo's.

What if you put a top inside, on top of the walls also made from the drywall?

Really like the box. Truly a good thing to have. I'd have to agree with "mrtynan" about using drywall screws and joint compound. Can you video the test with the box shut? What was the total cost for this project? Thanks, Keep up with the great show.

what kind of water based glue? can it be the arts and craft water glue?

Would a "full" drywall lid on top of your drywall installation help containment?

Paper burns at 218 degrees celsius. LiPo burns at 650 and throws a jet of fire out of it. So with some heavy LiPo's even using a barbecue grill will not be a good idea because it could melt at that temperature. Multi layered surfaces of different materials are needed so those will take strikes of heat one by one

whats with the hot & toxic gases?

Why didn't you make a wall to wall cover of 1/2 drywall to sit loosely (not airtight) atop the batteries inside the box in order to keep any excess heat from attacking the lid to the box?

did you do anything to the top of the compartments?

hello information, which is drywall? and glue that you used? I would like to achieve something like it too!

I might suggest full-weight, type X drywall (fire resistant).

at 8:06 "There's a fine line between crazy and stupid." Crazy is lighting this thing on fire on a visibly wobbly platform on a 2x6 railing where it could fall either direction. OK, not "crazy", but you probably could have done a bit better than that. This whole cool project is about smart precautions. The fire extinguisher is good, but lighting a fire on a wobbly railing just seems out of place on an "avoid risk" video. Nice project, though. Good stuff.

A paper towel 😂 Now do it again with a fully charged lipo.

If you're a professional Russian can you try this at home?

Try fireboard rather than ordinary gypsum/drywall. Or line the box with Nomex, Proban or similar FR woven materials. And instead of glue, try using high-strength tapes with high continuous ratings. In order of effectiveness... Aluminized PET film coated fiberglass ~450°F continuous Fiberglass woven ~1200°F continuous Vermiculite coated ~1500°F continuous Or for the extreme bad-ass... High-Temperature Silica tape 1800-2300°F continuous (melts at ~3000°F)

i am going to do the same thing just instead drwall i will use rockwool panels

The only flaw with your test is you should replicate a failure with a lipo battery inside of the box you built and the top down that way you get a fairly exact test otherwise the fire with the gasoline would not be nearly as hot as it would with a lipo failure. I like your test but as a retired Paramedic/ Firefighter I have seen a lot of fires and the best way to discover how a fire from a failure would be is to replicate the same type of failure. I would like to see how the glue would react under a high heat fire and would it actually keep the flames from working their way in the cracks. I do think your box is probably the right path but would love to see an exact failure. Good luck.

1/4" drywall would be twice as light.

Would this work to fireproof a small gun safe? If so, I will save mucho dinero :0)

Not sure why you used a flammable glue as apposed to drywall mud, a product specifically used to seal these joints as its non-flammable. Dab o glue on the back to hold it to the metal box. Might need a few strategic dabs on any dividers also but I'd try to minimize them. Fill joints with mud just smoothing with finger should be fine(probably skip the normal tape). Also I know its overkill but I'd use 5/8ths rock as its just as commonly available still plenty cheap and that much extra insurance. Great idea vs them spendy lipo bags and boxes otherwise. Really the metal box is only needed for structure so just about any container will get the job done. Really just never charge them sucker unattended, keep a good extinguisher nearby and this will give you plenty of time to snuff out any fire before it's a problem.

1/2 inch drywall does not have a 3hr rating 20 min if lucky,you need 5/8 fire rated two sides for min 45min.-to 1 hr rating,also as stated you glue does not help with spread of flame need fire rated caulk. need to read up on your building material facts. nice build though

I use a rectangle clay flower pot for my charging box.

Aren’t the burning temp of Lipo fires and gas fires different?

It would be better with sand bags over the batteries to extinguish the fire. On my channel I show how to make one with sand bags.

I fared thermometer would have come in handy before grabbing that test box

Sheet. Rock or dura rock . Cement board. Sheet rock burns it is paper????

Rather than using the glue you can use a fire rated sealant. www.bostik.com.au/construction-trade-products-catalogue-sheet-28682-bostik_firecaulk-m-0-g-0.html

I have an e-bike battery l am currently storing my battery temporarily in an oven until l build one

LiPo's can burn up to 3600 degrees F. Paper and gasoline can burn up to 1500 degrees F. House fires can reach 1100 degrees F. Type C drywall is rated at 2hrs. It is hard to tell if that rating is for air temps that can reach 600 degrees F or the fire itself that burns at 1100 degrees F. Either way, your test fire is nowhere near the temp of a LiPo. Please test an old LiPo.

Is that a 20, 22, or 24 inch tool box?

Fire Bad!

What about smoke damage....?

Place a plastic bag with sand on top of the compartments, if a fire starts it melts the plastic bag and the sand falls down and puts the fire out.

Great idea. Too bad they don't sell the asbestos board anymore because that would be even better except for the dust.

Nice idea, but I have a much better one and much easier oh, why not just use an old propane-fired BBQ Pit like a Weber or charbroil obviously without the propane tank. Just stick your batteries inside drop the hood you could even charge them up running a small extension cord to the side leaving the charger on the outside of the grill. Even if the battery goes up in Flames nothing is going to happen because the barbecue pit will keep the flame inside. Give me your thoughts on that one I just came up with it off the top of my head

This wont stop a lipo fire. The test here isn't comparable.

Drywall is fireproof?

Here's a link to our DYI version kzfaq.info/get/bejne/l5Z8msarx93Kj4U.html

My 6s 6000mah lipo would have surely burnt my house down had I not thrown it outside to pop

kinda disappointed you didn't show a lipo fire in the box you're advertising as "safe", just a proof of concept test. Lipo batteries don't burn like a soggy tissue....

0:49 WHAT?

Doesnt glue catch fire easily???? He? ;-)