Noco GB30 failure autopsy.
ฝัง
- เผยแพร่เมื่อ 11 ก.ค. 2017
- Noco is fairly prominent brand in the lithium jump starter market, mainly due to heavy marketing. This unit failed after a few uses, so let's take a look inside and see if we can find what went wrong.
The optocoupler-like devices are indeed Cosmo 1010 optocouplers.
The battery balancing is dealt with by an 8254AA chip with 4435 MOSFETs.
The LEDs are driven by an Xn2115tp device.
The main processor is a Holtek HT46R06.
The USB output is powered by an MP1584 buck regulator.
The USB charging input is boosted up by an FP6293.
There's a GZ423 (maybe a dual op amp?) and a 3.3V regulator.
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"Deep down you want me to do it."
Clive, of course we want you to short it out on camera.
no no, i want to see it highly overcharged then shorted out
The instant my brain realized Clive was moving the 2 cables closer together, I distinctly heard a loud "Nooooooooo don't do it !" in my head. I hate my brain sometimes.
madichelp0 "Deep down I don't want to set fire to my workshop... Right now."
So I take that to mean setting fire to his workshop isn't completely off the table.
madichelp0 he knows us so well
tallman11282
The common problem with these units is that everyone leaves them in their vehicle 24/7 including during the summer heat. The extreme temperature in a hot vehicle will always cause a battery to swell up. I have a different brand jump starter that I store in my vehicle and noticed that the battery also swelled up after a couple years.
Jump starting cars with other cars used to be acceptable and quite sufficient. Apparently, people these days are too good for that.
Once the battery is swollen, is it still safe to keep around and use?
@@noodles806 Not safe at all. I'd bring them out the house and/ or car and leave them inside of a BBQ or concrete floor surface just in case they catch fire!!
@@LuisA1Million Appreciate your reply! I ended up chatting with NOCO Support and e-wasted the device that same day.
Noco products are total shit
"I don't want to set fire to my workshop right now."
Is that to say you might want to set fire to it _later_?
uxwbill I thought the same thing.
Once he gets the insurance set up...
uxwbill maybe hes waiting cause a fire one week after setting up the insurance is rly obvious
Yeah .. Don't want to 'spoil us'. It's too soon since the last time.
Well his power supply already caused a fire
You know what, I have learnt more about electronics from watching Clive’s awesome videos than in the last 42yrs!!
Snap in twoways I too have learned alot from Clive and am also 42
Some times my friend behaves "very oddly" and I have occasionally thought about taking him to bits to see what his problem is.
Did you ever find out what his problem is? Now I have a friend who needs a few new parts so I was wondering if you ended up parting out your friend for useable spares and if so can I have some?
@@Alexander_l322 I'm glad my wife has no interest in Big Clive. I'd wake up one morning finding my parts up for bid on eBay.
Such a badass...
You might be odd whilst he is actually normal!!!
You might find a lot of spare parts
When my lithium booster went bad, I took it to bits and poked around - until a 2 foot flame jumped out of the battery. Should have waited on BC's autopsy.
This channel is my childhood all over again. I literally took apart anything I could get my hands on. my favorite thing to take apart were VCRs
That's another old Scottish engineering term 'absolutely blootered'
Absolutely blootered is how old Scottish engineers spend their off time😉
Thank you.
I dismantled old electronics at home. My biggest project was an old television.
Vacuum tubes, transformers, capacitors, etc. neatly layed out on newspaper on my bedroom floor. Mom was not always happy with my projects.
If I had done something like that, mine wouldn't be either - and that goes for dad as well!
They kinda pretend to be premium, but it's mostly just the price. It's hard to find one of these that isn't under built and over rated.
Same story with Cuisinart brand ever since they were bought out by Conair... at one time quality, now, just garbage in a fancy shell
That's _Con_ air. The clue's in the name. ;-p
Maybe TH-cam is just glitchy but I can't see the reply threads for this comment, even though I posted and I'm pretty sure you're replying to me! I was drunk when I posted that, but I wasn't *that* drunk! Y u no sho? Am I the only one who the comments are failing to load on TH-cam lately?
My GB40 was defective. Traded for a Motomaster Eliminator
My gb 40 and 70 was great but my 150 lasted less than 3 months
"Scary, but sort of pleasing in a 'Oh-it-might-go-at-any-moment' kind of way."
Having worked with model helicopters in the past, it totally scares me to know they're putting this kind of battery pack inside consumer electronics in such a way that makes them impossible to visually inspect for damage. If you saw your model pack go puffy, you know to never let it inside your house. This thing is a time bomb waiting to go off.
This was 4 years ago and that noco in particular as he said is an unknown year but noco puts a lot of protection in their starters back when you made this comment they had thermal sensors inside the battery as you saw and multiple other protections but when a starter is outside in a car they will get HOT and seince there isn't a way for them to cool the battery they often end up puffing up from the heat ruining the pack new ones have sensors to not let the pack be used if this ends up being the case where as this older model in the video doesn't have said protection and was still able to preform basic functions in the current model if it determines that the pack has puffed up it will charge to 50% and die or if it's above 50% it won't start a car and will let you charge your phone until it hits 50% which is the most stable percentage for a lipo cell battery
Far more electronics inside of that unit than I would have expected... complex unit. When the Li battery goes thermonuclear, it's all over no matter how advanced the circuitry is.
I've added a list of the main components in the unit. It is quite complex.
The optocoupler-like devices are indeed Cosmo 1010 optocouplers.
The battery balancing is dealt with by an 8254AA chip with 4435 MOSFETs.
The LEDs are driven by an Xn2115tp device.
The main processor is a Holtek HT46R06.
The USB output is powered by an MP1584 buck regulator.
The USB charging input is boosted up by an FP6293.
There's a GZ423 (maybe a dual op amp?) and a 3.3V regulator.
bigclivedotcom too much shite.
Lots of points pf failure Id say.
bigclivedotcom how did this happen? it says that your comment was posted three days ago and meanwhile the upload was only six hours ago.
This is because the video is available for preview by Patreon donors before Clive makes it publicly available on TH-cam. We can comment before it is available public.
LakeNipissing ah, thanks a lot! more of a reason to donate.
"Do I really need to be doing this?" I wish I had a dollar for every time I've said that to myself when I've been working on something.
I also quite liked "Scary, but strangely pleasing" when you probed the rather-sus-looking battery packs with your fingertip.
I have a GB30 for a few years and because my car is parked outside, this thing has saved me so many times already. It's not cheap for "a battery" but so handy to be back on your way in 2min.
Unless you're the person who leaves too late for everything, a dead car battery will never stop you anymore.
Just realise the car battery is quite similar
A mighty fine danger pillow you have there.
The suspense when you were pulling on the leads got me on the edge of my seat
"I don't hear any little relay click sounds ...and don't touch or this will be so exciting so quickly. " I love your way of saying things!
the batterypack is begging to be stabbed. on camera.
Indeed, I was looking forward to the pyrotechnics . BigClive must be loosing his edge passing up the chance for a bang!
First he's gonna need to charge the pack, and then short it! Can't wait for the follow-up ^^
weres the fire pan we need it now lol
It tis, let's take it to bits shall we?
"Relieved"
OUTCH! Be careful. NEVER push metal tool inside an electronic device, especially one with battery inside. And when removing the shrink around the batteries, you must be extra carefully. I’m glad nothing happened to you.
This is Big Clive.
He tweaks the very nipples of fear.
Just watched the Noco GB40 start up 5 very cold and flat automobiles in a car park full of snow. The Subaru took 4 heafty goes, 4 others started up well. All from the pack that fits in your pocket.
Thank you for the autopsy!! I have the Noco GB40, it is running good so far to boost many cars.
I'm glad to finally visit your channel. I enjoy taking things apart as well! Looking forward to catching up on your videos!
Welcome. Taking stuff apart is pretty much all that happens on this channel. (It does usually get put back together again afterwards.)
I was sooo hoping for an accidental short.
And you came pretty close a few times.
I was smiling the whole time :)
Got got one of these from Amazon.ca. It was pretty much the same case as this. The flashlight and power bank functions worked but it wasn't even able to start my lawn tractor. Absolute junk. I returned it.
The blinking lights at the beginning is normal. When you hit the. ! It overrides protection and gives you full power. I use a gb 150 everyday. Love it.
A great man once said, "I ain't avvin it. I want flames !".
Dan Harris Where's my hammer?!
Dan Harris your not on about photonic inductions are you?
Haven't seen much from Photon for some time. Anyone know if he's OK?
Dan Harris oi oi fuckin photonic induction legend
i popppedd ittt
I just bought a NOCO last week. Funny to go back to this video and recognize the design. Apparently they haven't changed the case design in like 4 years.
You know, I've played with load baring semi conductors in parallel before.
What can happen is, if they aren't all perfectly matched, and there are subtle differences in their impedance in operation, it causes current to flow unevenly across each component. The lower impedance component passes more current and gets over loaded.
Then shit runs away and fails.
Nice thing about Mosfets is that they lend themselves to that though, because they start limiting as they overheat rather than run away, so it tends to self balance in parallel.
5:42
I like how you qualify that statement by saying "right now" so as to leave open the possibility of wanting to deliberately set fire to your workbench at a later date.
Sometimes stuff does unexpectedly go on fire.
"Unexpectedly"
+Veraxis --> That's why he has the BigClive™ Explosion Containment Pie Dish® handy at all times. :)
Aleatha Vogel
Excellent use of the ™ and ® symbols
@@bigclivedotcom Don't you mean.......... " _unexpectedly_ " . 😎
"Deep down, you want me to do it..."Gotta be honest here... It's not that deep down. It's fairly high up. :D
Right off the top of my head actually
Why am I the only one not wanting him to blow it up, I mean if he set up for it sure but at his bench without any containment. Must be because it reminds me of my dad working at his bench, never wanted him to be zapped.
I also had a GB30. Sturdy build quality, IP65 rated, and would charge phones for hours. Loved it. Mine failed after a couple years of use. It's lithium battery swelled up so much that it cracked the case open. Must have been a similar failure as this unit. It was out of warranty but NOCO swapped it out with a new GB40 for ~$50. One difference I noticed is that the GB40 has a relay, apparent by the clicking it makes when jumpstarting cars.
insanity54
So the lesson is don't buy the GB30 model? How is your new one doing?
@@mrbmoney2396 I have the gb40. It used to work kinda ok... now it doesn't. Puts out 12v but not enough current to crank. I bought the gb70 this week. So far it works good. Boosted a 5.9l Cummins with it and it fired right up even with intake heater coming on prior to start. In fairness block heater was plugged in and batteries still had some voltage so not a real torture test, but I was surprised, I didn't think it would do it.
I just came across your 6 year old video. I use a Noco 2 amp charger to keep a small battery charged for our house alarm backup. It is only 1 1/2 years old and failed last week for no apparent reason. Here is the thing; I can't even remove the screws to open it. They are not cross head or slotted. They are a 3- fluted head. I have never seen a company go to such lengths to keep prying eyes away from their secret stuff. I suspect a failed mosfet . I will not buy another Noco devise, as their marketing is over-hype for what you get for your money. I may box and send it to you for your channel if you like. You make wonderfully informative videos'.
That's rather interesting, now it'd be fun to see it "fixed," just to see it blow itself to bits then used.
Wow. I work at a battery store and we sell the Noco brand jump packs, but not the GB30, only the GB20, GB40 and one of the bigger ones. Interestingly enough a customer brought in a GB30 to be diagnosed and it had this exact same issue. Probably why we don't sell them anymore, the GB20 must've been the replacement.
I have one of these units and it does have protection but if you have a complete dead battery, you can put it in in some sort of Manual mode where it allows the full current and circumvents the "brains" that detect if low battery is connected.
The electronics check if you have connected the pack the right way round and won't let it give power until it sees the vehicle battery. If the vehicle battery is so completely dead the pack doesn't detect it you can press the override button and then it gets power - you have to check you connected it right way round!!
Have you tried replacing the FETS and seeing if the unit can be resurrected? New cells are fairly cheap so it need not be an expensive project.
I'm so glad to see Clive back today after eating that cheese yesterday.
HB45175
Choke it down with some hard liquor and you're golden.
He's a big boy.
radry100 for you?
he's our good good cheese boy.
"Deep down you want me to do it." looooooool, was thinking the whole time before you said that... "Wonder what that would look like...."
Love your videos Clive... I recently purchased a GB 40 ... instructions said to plug it in an charge .... after only an hour the LEDs indicated it was fully charged. I never used it and when I checked it a month later it only first LED was lit ...I plugged it in and left it plugged in for several hours checking on it every half hour and it never charged😢 Seeing your video I now know there is nothing I can do. Thanks so much for these videos ❤
If it's still under warranty then contact your supplier.
Was there any heat sinking on the MOSFET bank? Also would it have been wise to add a PTC thermistor to the current in put side?
as others have mentioned, these units are rated higher then they are built. i have a battery maintainer/repair unit from Noco that got lumpy and deformed after its first battery conditioning cycle! it still seems to "work" although i haven't tested it on a scope/meters to see how well, or as advertised (compared to new).
I've heard less than complimentary things about the Noco jump starters. I purchased one from a company called Gooloo and it's been good so far. I've jumped 3 dead cars so far with it.
According to the many electronic reviews of these products, that I've seen; the Noco is one of the worst at over promising it's amperage capability. I gave up trying to find a good one!
I'll just stick with the 12v 50Ah battery I have mainly for my lift. It has two 15 watt solar panels, one on each side of my van to keep it topped off. Or, the 24v (2x12) 50Ah batteries in my wheelchair. Both of which I've used to jump my own, and other people's cars!
PV2Omni I bought one from aukey it has a very large 60 watts high discharge battery with relay
I have had a Schamer tech with USBs, Flashlight, compressor, 12 V outlet for 5 years. It has served me righteously during every power failure (lots here in the sticks) , starts the tractor each week, has started my truck and cars on occasion and has been FLAWLESS. It has some sort of lead acid battery and is heavy but smaller than a bread box. Old tech is great! Heavy but great!
worddunlap are you sure yours is Li-ion? sounds like yours is a lead acid one
Ammar Abotouk . that's what he said it was.
Lauren J. my bad 😉
i have been looking for this devices and i have a question: can you put theese on the car just to level the battery voltage so that when i use diagnostic equipment the battery wont fail ?
Thank you very much for the autopsy, Doctor Quincy....ah I mean bigclivedotcom
Just received my gb40 last week, worked perfectly.
Shorting out was an accident waiting to happen,but of course you are too smart for that too happen, but you did tease us a bit.
Nice diagnosis thanks.
Stumbled on your videos and enjoy watching. I decided to chime in on this one, since I recently purchased their (Noco) GB150. For the last few years I've been taking my XR650R dirt bike to Death Valley and usually I am miles away from civilization camping and alone. It never dawned on me that I may need a jump, and the lightbulb in my tiny head went off. You need a means of rescue! Long story short.... I bought the unit before my last trip and stopped before I went to a friends house. I actually jump started my friends Diesel. To be honest we were both skeptical. It cranked the engine over with ease. I have had other cheap models that wouldn't even start my car, and actually went up in smoke. Scary feeling. AND YES I DID WANT TO SEE YOU SHORT IT OUT. Cheers!
Interestingly, in the manual for the NOCO Model Genius 3500, it states "Do not operate outside the normal operating temperature of 0 C to 40 C" They are available all across Canada and where we live it goes down to -25 C every year. NOCO were not very useful when I pointed this out to them.
Assuming your vids are in order......Any adverse reactions from the Stillton?
Mr. Clive those MOSFETs are AOT460, I recognized them since I use them in products the company I work for make. It's a 60V FET.
In the chinese packs, is all of the protection circuitry in the clamps? If so, could you use an unprotected lipo with the clamps in substitution for these? I can see that noco puts its protection circuitry in the device rather than the clamps. What do the more name-brand packs do - protection in clamps or protection in pack?
I bought the Viking brand battery booster, from Harbor Freight. It worked so well, that I bought a second one. Both of our cars are always armed with a back up, just in case the battery dies. I have a Ford Escape with a bad battery, and I use the booster to start it anytime I need to use it. They are $80 and are rated for 450 amps. That's enough to start a petrol V8 or a small diesel, like the 2.0L four cylinder.
I Love your videos but would like to see you repair stuff like this too
Thanks for an interesting insight but Gosh...... That Was Close...... Literally!!!
Was I the only one holding their breath when you were disconnecting those leads?
It looks to me like the larger GBs are the better bet.
However, I may be wrong but I suspect that some GB Owners are not reading (who does?) and fully understanding the User Guide regarding the 'Manual Overide' button, in that when it is pressed, the 'Safety Protection' features are disabled, the leads become live and incorrect connection or shorting can result in....... Well....... Failure Autopsy ;)
Did you say the USB charger part still works? Could put some smaller cells in just to restore power bank functionality. Or flashlight.
HI,
I just open my Noco GB 30 and I realized that I have the same diode broken. So my questions are where did you bought your diodes and can you also type te names or numbers of series of the diodes ? Thanks a lot.
The diodes arranged like that makes the one work harder until failure, in parallel they don't stack, not the right kind of part for the job?
Clive, what was that last word you used? Sounded like "Blittered", but that word doesn't seem to apply here. (It means "provided with a mechanism for performing BitBLT data transfers".) So I'm not quite getting what you said.
so awesome looking up a product and finding a disassembly and autopsy from someone you're already subscribed to 8)
Those dangling copper ends of the battery gave me instant shivers. How exciting!
One of the selling features of NOCO is that you can not shorten out the leads, or so they say, so i would have liked you to touch those two wires together and see how they are protected. I found your video because my NOCO stopped working or at least it will not boost my boat motor. In the beginning when it was new i was able to boost a full size van with dead battery with a 6lt engine. but now it just left me stranded with my outboard motor.
Wanted to take mine apart but it has screw heads with a triangle never seen these before and I have a lot of screw driver tips.
Considering it's size, I was a little surprised at what the manufactures web site shows it cost, in USA dollars $249.95. Like another person commented, I don't think I'll be buying one of these any time soon. Thanks for doing all of the different reviews.
Yeah exactly, at that point it's time to grab a spare lead acid battery and trunk it
What about a video on a diy jumper. They sell the cases on Ali express. Are there any decent ones and what's the best battery to use. Had a few jumpers now that have failed and wouldn't mind a modular type thing
Everyone congratulate BigClive™ on reaching 270k subs! Hurray! :)
Have you done a review on a Wal-Mart ever start max jump starter with surge protector 600 peak amps
My car salesman mate has just purchased his third Noco in 2 years,both previous just stopped working in the same manner as this one.the second of those was quite cooked inside.
Does that unit not have reverse polarity protection? Or maybe someone cranked on it too much for too long. Several ive dealt with say not to jump without letting it sit a min and dont do it more than 3 times.
I'd be interested in seeing a tear down of one of the new "batteryless" jump packs (e.g., Autowit) which use the dead car battery as the source of power to start the car. I assume there is some sort of jewel thief circuit to extract energy from the battery which then charges a supercap which provides the boost to start the car. The obvious advantage is there is no battery in the jump pack which has to be charged in advance. Seems like a bit of technical magic.
The unit sacrificed itself in order to protect from the battery pack igniting. How very noble of it.
God forbid they design it to actually have its battery pack replaced. That would cause unemployment.
Have been using GB40 for a while now, giving boosts to some stragglers on the road and jump starting my car once. No issues. I'm surprised they don't use the standard 18650 cells, though.
hey clive, a set up like that i dont think would charge at 12v. wouldnt it instead buck down from 5v to 4.2v and use the balance cable to charge each cell individually? thats how rc car chargers top up their multi cell packs. You wouldnt wanna charge a high current pack like that at 12v due to the cells going out if balance.
Clive: do you think the Mosfets went Pop and caused the battery to short out partially and get all puffy, or was the Unit overloaded somehow that caused the failure?
I knew a man who ran an ice cream truck here in the states who tried to power his onboard freezer on an inverter. and the inverter ,[ which was not anywhere near rated for such a high amperage appliance ] went bang! and on opening it up to have a look, i discovered that the result looked very similar.totally Charcolated mosfets/ Triacs and the fuses it used were of the US auto type. and on one of them, the clear plastic casing looked kind of distorted and bubbly.
I'm guessing it may have been used in force and cooked the components. If a car's not starting people will often just keep cranking out of desperation.
Mine did something similar... How long did yours last for?
Could the puffiness be insulation? Or is it wonky batteries?
I have 2 GB70 and 1 GB40 ,both GB70 are over 2 years old and work great. Just got the GB40 ,less power but hasn’t had any problems yet. Great products.
Was the Adele song “I set fire...to the rain” about you? Or ghost written by you?
Yes, we do want you to do it. Each time you say "let's cover it to avoid explosion" my excitement level goes down.
I have a Gb40 1000amp and love it. These are handy lil units...
yeah...., so let's take it to bits....
Yes, this is why we subscribe
TheChipmunk2008
Grappenhall
I'm wondering if it is generally a bad design to have mosfets in parallel. Typically one fet can handle a current spike at least twice its rating for continuous current, for some number of milliseconds. Maybe if only one turned on, and the other(s) had a longer than expected delay, it could cause a cascading fet failure. Is that likely to happen?
It's perfectly normal to use FET's in parallel but when there's a problem, they all blow up together.
Although they're bulky & heavy, you're still better off with the lead / acid jumper packs for reliability.
I have been using a number of these units for a few years now. No problems so far. It is important to not try to use an undersized one for the type of vehicle.
Were you worried about the wires shorting because of the battery? And if so does laying your finger across both of them not worry you?
Is NoCo or CTEK the higher end brand? They seem very similar
learn about electricity.
Yet another manufacturer whose designers have been taking the "too clever" pills again. I DID actually think of buying one of these, but luckily my garage doesn't have any mains power run in. Loved the very Scottish technical term, "blootered" is a highly descripitive word. All the best for 2021, keep your entertaining videos coming!
so this is a lithium battery car jump starter? is it one that you plug into the cigarette lighter and jump it?or does it come with leads that connect to the car battery?
This version comes with a set of plug-in car battery clips.
Awww no zoomed in super high detail close-up of the mosfet that dropped a chunk onto your bench? D: I love it when you zoom in because my big TV means I get to see LOTS of detail.
Disappointed! you didn't take the battery outside and blow it up!!! go on, you know you want to :) Great video as usual Clive :)
Clive - are there any textbooks you'd recommend for someone interested in learning about electronics?
+Sam Blackburn These days you can't beat finding a website that you click with and using Google and TH-cam to fill in the details.
I have the GB40 and when I press the exclamation mark button to give the car battery a boost, upon turning the key to start the engine, the GB40 shuts off. But then when I turn on the unit, the green light indicates it is still fully charged. What could the problem be? Can You help me modify it to serve as a battery booster jumper and not have to go through all the fancy protection that cause it to shut off? Thanks Clive!
I was wondering at what voltage the battery pack was at?
Really enjoy watching your videos, Im a electronic person with lots of failure analysis and cant seem to stay away from taking something apart Just to see why it failed, maybe even fix it or put it on steroids
Oh, I wish you would do some repair videos on the broken devices you get. I like to fix things. I get a great deal of satisfaction out of it. I have a headphone amp that I purchased from China and it never worked, so I opened it and I found a solder bridge on a control IC for the power supply. I fixed that and the power supply now works, but the amp didn't, so I used my DVOM to see where I was getting power. I had it into the quad op amps and boosted power out, but at the film capacitors I had voltage on one in and out, but the other had voltage in, but nothing out. So I wait for some new ones. Once it is fixed I will have a working unit and they refunded my money as they don't make you send back the broken unit. Perhaps the jump starter that you are tearing down isn't worth fixing, depending on the cost of the battery and a some new mosfets. I still would have fixed it:)
Why didn't you just disconnect the lithium cell at the beginning, I see it's connected with a white connector that seems quite easy to acces. That should prevent most of the damage, right?
I some time ago I started wondering about EU/UK/US/... wall sockets and they're plugs. I would prefer UK plugs over all of them, mainly b/c the N/L reverse "protection", fuse etc. I'd like to know your opinion about this.
If I could choose a plug from all the worlds styles it would still be the UK one for its robustness and fuse for local flex protection.
Just like most things from the UK, reliable?
@@Mrfort The current Government springs to mind... Oh, you said 'reliable'? hmmmm.....
GB40 worked great the first two times I used it and now it is DEAD. Stuck at 25% charge infinity I cannot use it anymore and it is still new.
Buyer beware, the Noco Genius Boost units have problems.
There are a lot of people on Amazon reviews also having problems with theirs.
Travis In Canada -yup, you are right on. They should seriously change their jump packs names to- NOGO
I WANT MY MONEY BACK!!
My experience is quite the opposite. Bought GB40 off Amazon.ca and have been using it for about three years now, multiple jump starts (mostly for stragglers on the road, but once for my car), also using it extensively as a powerbank. It just keeps working.
Had same issue, solved it by pressing all 3 buttons together until lights flashed. This seems to do a reset and the unit now charges properly.
Thank you BC, interesting video indeed!
My GB70 battery swelled up so much it split the case apart. It was about 3 years old, but had only been used a few times. Charged it about every 3 months. Last time it would not charge, so I left it on longer. A day later it lined like a bloated tick.
bigclivedotcom, i enjoy your decent videos from years, but can't understand: why you not use electric screwdriver?