Utrai 2500A Car Jump Starter - unboxing and teardown

Today, let's examine a donated 12V 2500A peak car jumpstarter made by Utrai. It has a 88.8 Wh Li-Ion battery. It also works as an LED torch and a power bank with 2 USB outputs, one supports QC 3.0 quick charging (5V 3A, 9V 2A and 12V 1.5A). It even has a 10W wireless charging pad. It can be recharged using a 5V 3A USB-C port. It has an LED display indicating its state of charge and modes of operation. Let's unbox it, see what's inside and how does it work.
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[@ACOnetwork]

"4 skrjus" 😂😂😂🤣🤣🤣, I love his accent in english 😁😁

[@andymouse]

I'm sure there where only " teuew"

[@ACOnetwork]

@@andymouse naaaah 🤣🤣😂😂

[@t_Gecko]

A compass and wireless charging? These things keep getting more and more functions. Maybe the next one can fix my broken heart

[@michaelfisher9671]

Compass just seems silly really.

[@chelarestelar]

@@michaelfisher9671 it's to find the way in life

[@sza1940]

the compass shows the way what your heart want the most :D

[@403_Tuna]

Lmao 😂

[@DrHouse-zs9eb]

@@sza1940 Ay captain!

[@worroSfOretsevraH]

13:20 AON7544 N-FET. You can see the 3 source pins connected together next to the gate.

[@moeinsp2027]

Another video from a lovely engineer with all the important points and wonderful descriptions and complete schematics.I learned a lot thing during the few years I was joined this channel and thanks for everything 🙏⚡

[@PeterMilanovski]

Thank you for displaying the chips which are used! I'm working on a DC to DC power supply with isolated output and this is very helpful for me...

[@pirataga]

I love your videos, Diode, I'm a long time fan of your channel, since you made that first video of you putting "Even more saaaaaaalt!" On that glass with water and the dodgy water heater

[@andreasproteus1465]

What I like most is that, unlike most other electronics videos, he does not narcissistically plaster his talking head on my screen. C.F. the videos of the annoying australian with the shrill nagging voice.

[@rene0]

Wow, it opened up and that was wayyyy more electronics than expected.

[@Pirelli.]

Thank you DGW. Stay safe and God bless you! 🙏😊

[@jcxtra]

"Of course if you're interested in just the unboxing you're watching the wrong channel"... No, I think I'm exactly in the right place :D Seriously I love your videos, they've taught me lots over the years, and that it doesn't matter what way you do things, so long as they work. I've never seen someone solder like you, but it certainly gets the job done! Love the channel

[@mohammedqadeer3422]

I don’t know what to say, this guy knows his trade but even then his very funny, I’m not sure if his doing this on purpose or that’s how he is but either way god bless this guy, his straight to the point, no messing around wasting people’s time etc!!!! Bless you brother ❤️👍!!!!!!

[@BRUXXUS]

Seems surprisingly well designed and built!

[@simplemechanics246]

Usb gadget side is perfect, rest of is pure garbage. It never can start 8 liter car, dream only.

[@1pcfred]

@@simplemechanics246 It depends. I could see it working in a marginal situation. Where you have low crank. So I can't say never. I'd be comfortable with infrequently. Maybe almost never? There is a reason why they make fleet chargers. This ain't one of those either.

[@simplemechanics246]

@@1pcfred "The missing amps" can the battery recover within minutes, if the situation is very-very close call. That 2500A amps peak may can get once just for picosecond, right before the magic smoke. By super cap, it is 100% possible but need at least 4 rows caps like on my video to reach 2500A. I used only 1 row for 1l car and it consumes these amps around 1 second. Funny things is that, it is possible to start the car by same energy what contains on single AA battery. It does not mean you can boost 1.5V up to 14V. It is just impossible, too big losses. On the same time you can "measure" 1 single AA battery "capacity" and use power analyzer for charging the caps. I did it and it works just barely...

[@1pcfred]

@@simplemechanics246 you do not need 2,500 Amps to turn a car engine over. Boost is just 50 amps. Often that along with whatever you may have in the vehicle's battery is enough.

[@simplemechanics246]

@@1pcfred I never had 8 liter motor but 1liter engine peak can be 400-600A. That kind of booster does not have any boosting capabilities if you do not count 5VDC to 15VDC voltage conversion for boosting. Yes it is "voltage boosting" but not anywhere to useful level. Entire youtube is full about 12VDC cordless battery car boosting videos. Only these people does not understand the modern 12CDC cordless battery is only 10.8VDC nominal voltages. It is really sad to see how millions of people really belive that garbage. If you living on abandoned island and you have 2 healthy but under 12VDC battery, yes it can charge 1 battery by "sucking" other battery. For that you must use the USB input, because only there is the DC to DC booster. Car booster output is directly soldered to internal battery.... no any boosting option there.... only sharing.... Show to me any car owner who have even 2 seconds to wait. No, they crank until the starter burns down.

[@imamalgazali1137]

thank you sir, always love teardown video

[@philippe-lebel]

I'm fed up with so many test consisting to take 12 minutes to plug a jump stater and say "it work ! So I recommend it". I'm very happy find a serious test like yours. The part about different cells configuration was very intersting.

[@tylern6420]

Because those tests can also be faked?

[@EasyOne]

Very well explained

[@hullinstruments]

My truck battery went bad last week and I’ve always wanted one of these jump starters but never bought one. I had to use my two cordless 12v drill batteries and put them in series, tape them together, and jump my truck off of that. Just wasn’t enough power without putting them in series, the Hitachi drill batteries weren’t happy about it but they survived.

[@aireretube]

I bought one of the 2000A version, itdoes really work Very well. Able to start 4liter diesel engines as If It was a small motorcycle. Then I bought another one to my father.

[@PCIeTeam]

We can see everything in action at 50FPS I am really happy you now know USB-C

[@ultrongaming1177]

Waiting for next video 😊😊

[@kolinevans9127]

I would like to have such a device thanks for the review!

[@electronic7979]

Nice review video

[@melplishka5978]

Nice unit.

[@user-kk8uc9st5y]

The perfect czech experience - watching DiodeGoneWild with Zatecky Hus ""fire extinguisher" :) Bloody hell :)

[@wtf.pratiiiiik]

AHH .... waiting for your video from long time

[@jkobain]

I'm not here for the unboxing, I am here for substructions and diminishions!

[@Arctic_silverstreak]

The usb output voltage is surprisingly stable

[@keithking1985]

nicely balanced, you rarely see batteries identically charged.

[@amkp40technology]

Nice ❤️👍🏻

[@weerobot]

Very Nice...

[@fungusenthusiast8249]

yesterday I watched a video by photonicinduction from 2015 about one of these things, I think it was when they were somewhat new and it made me realize how powerful these things are. Like, drawing 600 amps (peak of course) from a box not much larger than a phone is really amazing.

[@windshield11]

Bruh make a supercap bank this size and you'll see what's CURRENT. Not for very long tho

[@fungusenthusiast8249]

@@windshield11 heh I've done that before, though I messed up when I put it on the charger on too high of a voltage to charge faster and I forgot about it for about a day. When I came back to it all the caps were busted and hissing(only a little though)

[@windshield11]

@@fungusenthusiast8249 lul you got lucky there i had a output cap explode on this 5v psu i was building cuz it just decided to give out 24v on a 10v cap XD

[@Speeder84XL]

​@@windshield11 I was also thinking about that. I doubt most of these devices will handle 600 amps for much longer than the supercap bank anyway, before overheating, haha. And 2500... Maybe that's the theoretical max of what the cells can put out if they are shorted when fully charged - but just the resistance in the cables, connections and the components inside that protection box on the cable, will limit the current to way less than that, at 15 V. Those boxes are quite impressive, but the manufacturers indeed push the numbers to make it look more impressive (as with many other products). No cars will need nearly that much current to start either (not even 7 or 8 liter engines) - so it may still work perfect with less than 1000 A output and most people will assume the numbers are correct, haha

[@wingerrrrrrrrr]

@@Speeder84XL I haven't seen anyone try to test the peak current claims on these jump packs, even from the ones that run fairly comprehensive comparative testing.

[@navexelac2]

2:50 They misspelled Charging as "Charing" XD

[@cURLybOi]

maybe they mean it - charring :D

[@159357ahmed]

i hope you make a video about explanation and schematics for 50 A 12 VOLTS PSU

[@ats89117]

At 2:43 it says the dual USB & type-C outputs are for charing. I think they meant charring, so maybe there will be a fire later on!

[@DiodeGoneWild]

I didn't notice this time :D

[@1pcfred]

@@DiodeGoneWild Make nice grill marks.

[@andreasu.3546]

Charring is best achieved via the jump starter output.

[@menscherde]

What's inside the jumper cable assembly? Just a bunch of capacitors or anything else? Would be interesting!

[@zx8401ztv]

I am always amazed that tiny cells like those manage to start any car, but they do :-D The weak point is the battery clips, very crappy and minimal surface contact. A frend had a similar unit with those clips, the plastic melted on one side because the other side was not actually connected to anything!! :-( I fixed the melted side and added a thick copper loop cable so both sides did something. (on both clips). Sorry but your cat is loverly :-D

[@rilosvideos877]

I hoped you do a 2500 A test :-) These connectors will never ever handle a current of 2500 A! Maybe for 1 ms if at all. Cables and connectors will melt in secs!

[@GeAR22736]

The wireless charger coil is assembled in the opposite direction. Should be coil up and ferrite back layer down.

[@zaprodk]

The component at 13:17 is an AON7544 MOSFET from Alpha & Omega Semiconductor.

[@TheSpotify95]

Nice review - would love to see if that battery pack is still rated at 88Wh, or whether it can actually pull 88Wh from the battery... ;)

[@cjdelphi]

The unknown chip, 7544 GA8Z6A appears to be a dual channel mosfet, the gate should be 1 pin, and the collector drain should be doubled up (as 2 mosfets in parallel)

[@davidca96]

thadits nyyyyycee

[@ikehsamuelifeanyi4925]

Please do a video on "Old VCD RF" module with schematics. I would be glad if you do so.

[@WolferAlpha]

This GA8Z6A is a transistor and not an IC, the identification labels on the board help to identify which type of component goes in place, this PCB identifies ICs as U and transistors as Q. Probably due to the connections it makes, it should be used to disconnect the USB buck regulators in case of an overload or simply to turn them on when pressing the button.

[@TechGorilla1987]

Maybe I missed it @DiodeGoneWild, but in what sport do you compete? I know you have many medals and travel frequently.

[@PeterMilanovski]

Where was this jumpstarter sold? I went looking for it on eBay but I couldn't find it! This one seems to have a lot of the components that I need for another project...

[@andrezinatech]

Niiiiceeeeeee!

[@miikapekk5155]

Looks like a pretty nice device. That company Thieye make action cameras, so possibly it's made by one of the bigger Chinese companies that actually have to care a little bit more about quality.

[@celsoneves2368]

Very good beauty!.

[@ramsey553]

You should do the jstar5 that dam thing is a struggle to actually charge wonder why it does that

[@mythicalboy3600]

You are the best electrical engineer I have ever seen! Keep going!

[@omniyambot9876]

He is an engineer? I want also electrical engineering sir

[@sivalley]

Almost forgot about the emergency hammer on the end of the pack because if you hammer anything other than glass you will have an emergency on your hands.

[@nathanruben3372]

Do you advice this battery. Does it worth its costs?

[@bazrazin1]

how do these give 2500A at 12V what's the core circuit for that 2500A.

[@Delali]

I need to borrow your warning message for my channel....haha I'm still waiting for a video in which you dont use the word "probably".....i love your videos....

[@AndreDeLimburger]

Many features, but will it start a car?

[@Purple431]

Was this the donation from Lithuania?

[@Miata822]

Pretty nice charger but is there any battery protection? Can the car jump connection pull the batteries below safe voltage?

[@DiodeGoneWild]

I will definitely open the protection box in another episode ;)

[@tylern6420]

@@DiodeGoneWild have you ever opened the box?

[@suryanath8755]

Hello, I found an electeonic load on your website, i make that circuit properly, when i connect a battery, the circuit is working perfectly, but when i connect a 12 volt 15 amp chinese SMPS, then the mosfet keep blowing or shorted... i dont know why, i used IRFZ44N mosfet, 7.5 volt zener, 100k potertiometer, 1k 1 watt resistor.... can you please reply or suggest anything? and sorry for my bad english....

[@hullinstruments]

I wonder how much it would cost if I wanted to ship you some thing? I have a lot of excess test equipment, I’ve accumulated mountains of the stuff. when I got started the only way I could afford professional quality high end gear was to buy broken or untested equipment and repair it myself. As I got better and build a fully stocked lab… (with Mostly NIST traceable calibrated equipment)… I didn’t have to look for gear any longer. But It started finding me. Because After a few years of looking.... everyone knew that I wanted the stuff so they would tell me about sales and auctions and things. I’v bought entire pallets of hp and tektronix equipment and stuff like that for pennies on the dollar. A lot of it is nice good calibrated equipment… mostly from government auctions in my local area. I live in an area with huge government industry and a big history of government involvement. Nuclear and otherwise. Home of the atom bomb.... So there are storage units and warehouses full of test gear all over our tri-state area. So I’m always looking at auctions just for fun. But most of it just not worth selling on eBay because of the shipping cost. It’s not worth selling a $400 scope if it’s going to cost $200 to ship it and there’s a good chance it will get broke. Then you have 12% eBay fees on top. So I would be interested in sending you some pieces. Especially if there are things in particular you would like to have or upgrade some of the things you already use. Just not sure how much shipping would cost and the cheapest way I could get it there. Another one of my buddies owns an industrial scrap yard, they’re always bringing beautiful industrial electronics, motor controllers, and every type of industrial electronics toy you can imagine in that place. A lot of medical stuff to like x-ray machines, even scored a few surgical lasers. If you want some stuff for teardown I could ship you a bucket load of the stuff if I knew a cheap way to get it there safe and in a timely manner. I salvage what I can but they’re not open to the public, and I’m only allowed in there because he’s my buddy. BUT I CANT KEEP EVERYTHING … I tried that for a few years and it almost ruined my life. It’s hard to watch a $2500 industrial motor drive get crushed… But I can only do so much. I can’t keep everything so I have to watch him crush thousands of pounds of beautiful like new industrial electronics every month.

[@1pcfred]

The problems Americans have.

[@steve64464]

From what ive seen of these lipo based jump starters they tend to explode under a extreme engine start attempt.

[@baronsamdi1600]

Какая реальная ёмкость аккумулятора jump starter?

[@PeterMacPL]

Gdzie przechowywac taki powerbank w domu / piwnicy ? Czy nieuzywany moze kiedys mu odbic i sie zapalic / wybuchnąć ?

[@xenoxaos1]

But what about the scemaatiic?

[@frogz]

hey diodegonewild... please get displate as a sponsor just so you can make the ad spot!!!

[@suryanath8755]

Hello, I found an electeonic load on your website, i make that circuit properly, when i connect a battery, the circuit is working perfectly, but when i connect a 12 volt 15 amp chinese SMPS, then the mosfet keep blowing or shorted... i dont know why, i used IRFZ44N mosfet, 7.5 volt zener, 100k potertiometer, 1k 1 watt resistor.... can you please reply or suggest anything? and sorry for my bad english.... I am your subscriber from India..

[@user-dw6fj1py1o]

Battery Lifepo included.

[@Slushee]

17:10 exactly :P

[@kraestian]

still not popular but very fun to watch

[@SirWolfCZ]

I would be a bit reluctant to poke a metal conductive screwdriver into a PCB connected to a massive 4S Li-pol battery capable of delivering hundreds of amps. :)

[@martinkunz9768]

I have an idea. I want to ban all lead-acid batteries from my vehicles. Is it possible to permanently replace a lead battery with a Jumpstarter?

[@jeksona27]

i have similar model, it charges very fast to 100% but charger is disconnected devices indicates 56%. Is the problem battery cells? What is the model name of the battery? Thanks

[@tylern6420]

Can you maybe clarify what you mean Does the device attached to the output say 56% when the charger is disconnected? Does the powerbank just instantly go down to 56%? Does it go down very quickly to 56% when charging a device with it?

[@kalanakumara2835]

Please give me a welding inweter cerkit diagram

[@nicolalamotta9554]

Here is the manueeeeeelllll

[@rpbajb]

So we're looking at...4 × 32650 cells? They're selling on ebay for $35.00 per piece.

[@Αθηνά_Στεριανάκου]

3:52 why I think that car is a tesla model s?

[@konsul2006]

My experience with these jump starters: You need one when you don't have it. When you have it, you'll never have any use for it. When you do have and need it, the charge isn't high enough for the jump start😂 All the ones I've tried had only three battery packs, this one should have enough juice... Hopefully.

[@keithyinger3326]

I'm not sure which brand of one my boss has but i was surprised when it started his truck with a 460 V8. Turn the key and it groaned... click, click click. Hooked up this little battery pack and it cranked right over and started right up. Sounded just like the regular battery crankin it over. Not sure how many cranks you'd get, but the pack said it went from 100% to 98% from about 5 seconds of cranking. Still though, the amount of power they can pack into those lithium cells is just staggering when a battery pack about the size of a couple cigarette packs can start a truck and it usually takes a huge lead acid battery.

[@cocosloan3748]

The cat is very angry !

[@doverstreet4319]

You didn't check the PD output

[@mohammadrezamim272]

۲۵۰۰ amps? Isn't it too much?

[@user-wg4pr6td3s]

Здравствуйте. Я не понимаю по английски поэтому скажите, стоит его покупать или нет?

[@Trinitrophenylmethylnitramines]

13:25 it's just a n-channel mosfet. AON7544

[@DiodeGoneWild]

Thanks :). It's harder to find the datasheet when the marking doesn't contain the letters.

[@joinedupjon]

How long? Bloody Long

[@pirataga]

I need one of these so badly, my car is older than me 😩

[@user3030]

so, now start some car in some next video with it

[@simplemechanics246]

7:00 it is bit too high voltages for car electronics. Some dodgy car electronics can start smoking by these voltages 10:50 no way these can deliver 2500A, these not super caps... Even 25A is way too much to ask. I used super caps and 10xAA batteries to start the car. 5 series 2 parallel

[@yunuscankaran]

adam bizim keçecililer gibi konuşuyor

[@gordonwedman3179]

Those output cable inside look awfully thin to carry 2000 amps. Think how thick your jumper cables are. Of course the whole lead length is much shorter so maybe OK? When I have dead battery I get a good battery hook it up with jumper cables . NO electronics required. All the electronics in the unit just to regulate the charging and the accessory outputs.

[@notchipotle]

if you ever need the compass, you're f'ked 🤣

[@TechGorilla1987]

It doesn't say wireless charging, it says wireless CHARING. Does this mean we can grill with it too!?!

[@uawsux]

it looks like gooloo

[@1pcfred]

Sad kitty

[@hugolyppens2754]

How can it produce 2.5kA? How thick do wires need to be to carry such a high current? Are you going to test it on a car?

[@DiodeGoneWild]

The cables are very short and also the peak current only happens very shortly, so the cables don't overheat. But they probably still drop a significant voltage at this current. But also the internal resistance of the batteries could be a problem. Maybe the 2500A rating is measured in a short circuit (no useful voltage at the output). Who knows....

[@tigrafrog]

New "trend" to shovel in wireless chargers (a.k.a BIG Energy Waste) to everywhere just sickening. Ugh..

[@maki5g482]

it has charing not charging

[@zx8401ztv]

lol maybe for cooking :-D

[@mansterzq5418]

Im almost first :D

[@user-ki9jg4df2e]

where you get this accent ?😁😁😁😏😁😁

[@piconano]

What would happen to a battery like this if it's left in the glove compartment or the trunk at -20ºC?

[@vojtac7623]

the battery dissapear :D

[@ALMOJZAF]

Is this an Italian or Russian accent? Who can tell us what country's accent this is?

[@chelarestelar]

.

[@jtdc86]

You talk funny.

[@RRyyas]

3:52 Car diagram shows a Tesla Model S Why would you want to jump start an EV? The battery packs would not be at the same voltages and would most likely destroy the jump starter as a typical EV battery pack sits at 300-600V DC

[@tylern6420]

You'd be better off buying one of those powerbanks with those wall outlet outputs and just charging the tesla using that when on a highway, but of course, you should only do it in a safe place