5:00 "in the end, it is always important to use protection..." So true, so very true.

with a great power comes a great responsibility.

“A protective tape that I can easily remove” - great Scott

Just a tip: ALWAYS unplug the battery plug, NEVER the charger connectors!

Great video Scott. I'm an electronics engineer and I've only ever worked with UN approved professional Li-Po batteries which contain protection circuits. I was not aware that one could buy Li-Pos without protection circuits, so the dangers of these without suitable external protection in pocket sized equipment must not be underestimated. Thank you for sharing this.

Remember: always use protection.

The thumbnail looks like an open bag of Cheetos.

I love LiPo batteries for my RC aircraft, they're so light and have great capacity. As soon as LiPos became widely available I immediately started downsizing my internal combustion engine collection, converting many planes to electric. I've been using and abusing LiPo batteries for years and have damaged quite a few along the way, never once has one caught fire though. I still store them in a sealed metal ammo can and only charge them when I can be around to monitor it.

Very helpful information, nice work!

Be careful of short-circuit when cutting battery wires ! 02:26

I have searched for a you tube channel for circuits and Arduino (I'm a huge fan of Arduino) .finally I got this channel. Great Scott teaches every thing practically.Ilove this channel

Good video! Very clear explanation, backed by simple and therefore instructional tests. Now I know the why some batteries puff and others don't and what I did to make them puff. (and to handle my batteries with more care in order to avoid things like short circuits etc.) Thanx!

Great video. a lot of good testing and information. I do have a follow-up video for you. you should slowly charge a battery until it overcharges and then explodes. This is what happened to me unintentionally and I almost burned my house down the kitchen counters all had to be replaced and the entire house was covered in soot. I walked in at just the right time and stopped the situation. The key to a fire is having something else around that the Heat and Battery can ignite. such as inside of an RC car or inside of a cardboard box. I really think you should test this as the result will be catastrophic and more aware for people who are not. nice work!!! ~Russ

These must all be newer LiPO's. I had a Blade CX helicoptor and ripped one of the wires off the battery pack and while soldering a new one on I jumped the leads on the battery and it immediately puffed up and started billowing fire out of the side of it. I had to just let it burn because I couldn't blow out the flame. This was on my old coffee table which is now at the junk yard. These new cells look like they just blow off pressure and heat without the fire, that is pretty cool. But I don't think all cells are going to give this same result. Love the channel, subscribed.

Been using Lipos since the early 2000's. The first available for RC use(at least in the US) were the FMA/Kokam 1500mAh cells. Very expensive but a giant leap for electric powered RC. Still have some that will charge but are a ghost of them former self's, can't bring myself to toss them. Learned many lessons along the way. Never accidentally poke a cell while removing shrink wrap, never charge without a balancer as a fire can result burning down my shed(heres looking at you Astro 109 jumping cell count, I trusted that charger too much became complacent), and obviously never cut both discharge wires together. Lol! Still, best power source for high current apps.

When i saw LiPo, i immediately thought “Lithium-Polonium”. Then I thought: “that’s ought to be pretty dangerous indeed”.

He's saying all this random shit and I'm sitting here like yeah... Science.

Intro is at the best rather than some motion graphics sh!t

I love how you managed to include Hot GLue in an experiment about Overcharging batteries.

To me you're an electrical genius. I liked and I subscribed. You have done the ultimate testing. Thank you Keith Kuhn

01:39 😂😂 it's lit 😂😂 420

One of simple tricks to prevent shorts is, if you have two uninsulated terminals or aligator clips or just plain stripped wires, is to cut one a bit shorter, so they are less likely to touch when they hang loose... Or make a knot on one wire to shorten it, which is allso a good way to mark + or to mark pin 1 on ribbon cable or something similar (but you need to untie it if it needs to pass high frequencies).

Thankyou !! Hey, that was so satisfying to watch. Idk what you did in the edit. Maybe it was all the plugging and unplugging of connectors , desoldering and watching those batteries release. Lol I just subbed brotha. Good job man Marc 😊❤

You are great man. I really love this type of technologies. Lipo battery hardly try to become safe.

Everything is dangerous if you throw it at the enough speed

Wow dude you are just awesome I just subscribed to your channnel ,congrats from Bulgaria

You did this in the snow? What a hero!

To the point and informative as well as researched. Well done

You just gained a sub!

Excellent Video on an important subject! (I would have like to have seen the same tests run on 18650 cells too!) Thanks for sharing!

Thank you for amazing videos. I watch your channel almost all my spare time. Please make those coming more frequently if you have time on your hands.

Wow,did not know they were that dangerous...Very useful.Thanks !🙏🏻

So did Anyone notice at 2:27 he shorted out the battery with wire cutters

just to say, when unplugging lipos you should unplug the xt-60 first to prevent a short on the charging positive/negative 4:55

This is an awesome video man! Nice work thank you for sharing!

with GreatScott comes great videos....

Thanks for the interesting video. There is an information I haven’t found anywhere: does anybody know if a burned lipo battery looses significantly its weight? I have a setup that wouldn’t be disastrous if the batteries burn, but it would be a big problem if the CG gets shifted

I don't know anything about this type of stuff. I don't know why it was in my recommendations. Still, it was interesting to watch.

Thanks for the info. I will use protection.

Very informative video!Thank you!

The smoke from lithium polymer batteries is very nasty and could kill you if you inhaled enough of it

Hoping you don't disconnect your batteries the way we can see in the video... Short circuit was 3 mm away ;)

great video and great scott :) as usually

+GreatScott! you seem quite brilliant. I enjoyed this video.

KZfaq 3 years later: Time for everybody to see this

A new electronic component, the ballast transformer. 👍

thanks alot, this answers my questions on lipo batteries

Nice job you have a lot of good videos !

@4:54 - Unplugging live banana plugs! Yikes!

Haven't you heard safety is number one priority!

so much knowledge!! nice vid man

Wow awesome video! Very informative thank you so much!

Erst den stecker des Akkus abzwicken, um so einen Kurzschluss zu verursachen, ok war ein kleiner akku. Aber dann den Großen 3 Zell-Akku beim Ladegerät so abstecken, dass die zwei 4mm Stecker sich berühren könnten?

I wonder what would happen if you constrained the battery's volume? IE: Made the pressure much higher? Would they get hotter? Act like a bomb? Just find a vent and steam a lot? I ask because phones are pretty solid these days!

Very informative thanks for posting

Thanks! Very helpful for makers!

4:55 Funny thing waiting to happen!

Most common electronics dont come with Lithium POLYMER batteries, they come with Lithium ION batteries. Lithium Polymer batteries provide more power but are less stable, but lithium ion batteries are stable like nickle metal hydride batteries while also producing a small amount of power for a very long time (in comparison).

0:42 I love your intro. If you put a red filter over the LEDs, you’ll get much better contrast and a prettier display.

Thank you, now i know more about my lipos:)

it's like the note 7

Please don't cut both battery leads together with a metal tool like at 2:26

Thanks for saying this important topic thanks a lot sir!

Great video informative..thank for sharing

4:55 Why did you do it that way? :p Pretty good change to shortcircuit it like that.

Resume: If there's a little PCB in you baterry its fine.

"The other batteries, DOOUUGH..." I've always found this funny=P Great channel, Great Scott!

Very well done, thanks

420 volts :)

I'm not gonna lie, at 5:01 when it sparked I jumped.

Had a thermonuclear moment with a battery today, tried to salvage a cell from an old pair of wireless headphones and may have crushed it a bit too hard while freeing it up. Definitely exciting when the cell gets rid of all of it's charge within a matter of seconds For future reference if anyone wants to make an old cell safe for disposal, I recommend putting a resistor in between the terminals (bypassing the protection PCB) so that it will slowly discharge all the way to 0V, otherwise the protection will stop it at around 3 Volts. Once it's really close to 0V you can just tie the 2 terminals together and throw it out and it has no chance of blowing up anymore. Generally speaking a 100 ohm resistor should be pretty good for most batteries that are near the 4V range, as the voltage drops down you can add another one in parallel which drops the resistance down to half (50ohm) and then it wont take all day. This whole process should be done near a sink or other area where it wont burn anything down in case things do go wrong when you're messing with it. Blowing one up definitely makes them inert but the resistor method is a lot less messy and keeps the battery sealed

Nice work!

What I learned: always use protection

Lithium batteries are great and all, but guess which battery you use when you want to abuse something and not have that battery catching fire? Lead-acid batteries are heavy as hell, but they're so forgiving.

Very VERY informative!!

HEY THAT'S GREAT I'VE HAD CAR BATTERIES BLOW UP BEFORE AND ONE EVEN BLEW THE HOOD OFF THE CAR. OVER CHARGING ON A LONG TRIP CAN DO THAT. NOW I KNOW THESE WILL FIZZLE AND NOT BLOW UP VIOLENTLY I FEEL MORE CONFIDENT TO MAKE MY HOME BANK WITH THEM. THANK YOU SIR.

what's the name of the tape you pulled off?

Lol... First I read: "How dangerous is the life of a go pro?"

DW01 uses the voltage drop across the Mosfet to sense the over-current. The ON resistance of the Mosfet is only specified as a Maximum. Low on resistance is needed in most applications. So if you get a really 'good' one the over current protection will trip at a much higher current. Basically DW01 has a very loose tolerance for its over-current protection.

Thanks for sharing :-) Interesting subjekt :-)

drone peeps where ya at

"It is always important to use protection" Also everything is dangerous if you're stupid enough

Thx for your helpfully videos :D

Excellent video.

wouldn any type of battery be dangerous when overcharged,overdischarged or short circuited?

I hope this guy's name is actually Scott

thanks dude I like all your video

Yeah guys, listen to Scott. It's always good to use protection.

damm i came to see explosions

Saw this vid and thought yeah of course a Lithium Polonium battery would be dangerous. Joke is on me though.

Thank you so much for this video

that was a very nice spark there :)

4:54 don't do this at home!

is this the reason why Hoverboards are Exploding

Excellent video, I thought I saw a Mamba esc ?

Great video brother 👊👍🤘

I've had 3 iPhone 3gs, an iPhone 4 and a macbook where the batteries have expanded and nearly burst

1:40 the power suply was set to 4.20 volts

You are a 'REAL GENIUS'

Finally, someone who actually shows what happens!