How to Fix a NOCO Boost Jump Starter

[@michaelobert3346]

I had this exact model. It sat in my truck for 4 months. Brand new! Then it went dead. Would not charge! This trick saved me from throwing out my NoCo. It 100% worked! I left my trickle charger on for 20 minutes and made sure it was selected to lithium battery! THANK you! I ordered the two connectors and jumpers but used my own maintainer. PERFECT!!!

[@KiloLima]

Thirty minutes well spent. What a clear and concise explanation on how to save a pricy emergency tool. Thank you, sir! Well done.

[@KiloLima]

24 hours later. A couple dollars worth of supplies arrived from Amazon. Followed Jim’s instruction and hooked up the USB-C to the adapter’s negative side to a 12V 750ma maintainer. Positive of the Noco to the positive of the same charger/maintainer. The maintainer quickly showed a correct connection and indicated proper charging was in progress. Let it sit for an hour and viola … a several hundred dollar paperweight was indicating it was being properly charged. Let it sit a little longer and then plugged the Noco GBX155 into a standard USB-C charger and the Noco came back to life and indicated a proper charging cycle was in progress. Letting it sit overnight and continue to charge. What a fantastic and cheap solution. Even cheaper than dealing with in or out of warranty claims. Sir, thank you again for sharing your expertise. I hated the idea of opening it up and possibly frying a component with an improper connection. Your solution hardly took a moment and saved a valuable emergency device. Thank you!

[@davewithadayjob]

Thanks so much for making this video. After having my second Noco Boost jump box die I was about ready to toss it and move on to another brand. Came across your video and was able to save it using your technique. Thanks so much for helping the community!

[@Critter15]

Wanted to thank you! I was about to give up on my G40, but your instructions fixed the problem. Genius!

[@jimginnyohio]

Nice! I’m glad that helped. You’re very welcome! Take care.

[@peterarchambeau1864]

Tried the charge from 12v auto outlet while I drove to work . Showed nothing for a charge . Got home in afternoon hit the on button and it showed life . Plugged in my phone charger style and now first red light is glowing as if it's charging. Glad I watched this video . Good Luck !

[@peterarchambeau1864]

Well she shut down now . Nothing,will have to get the cable and try to trip the BM system . Would like to trickle charge from the big cables .

[@vtec230]

Class video..worked a treat..I just tripped to usb cables fed live onto live clamp and put negative into the usb output negative 👍 only took 2 minutes and 30 seconds on charge

[@haydencreek]

I just followed this with my GBX55. It was completely dead and now it's 100% charged. thank you!

[@jimginnyohio]

Glad to hear it helped. Best wishes!

[@liamgross7217]

@@jimginnyohiosuccess with mine as well. many thanks from 🇦🇺

[@devileo]

I revived my GBX75 by this method. Thanks a lot for this detail guide. I don't have a 12V charger. I just hook it up to a 12V battery and charge it for 15 mins.

[@jimginnyohio]

@@devileo Glad that worked out!

[@jimcash1515]

My dead Genius BoostHD GB70 was headed for the recycling heap. It died last year, and I just never got around to disposing of it. I used a NOCO Genius10 to mimic the trickle charger and it appears that my GB70 is coming back to life! I just don't understand why it crapped out in the first place. Thank you!

[@marcuscaptain534]

Can u explain a little more in depth how u did that..thankx

[@jeremybreeden4228]

​@@marcuscaptain534if you're attempting to revive your Nocco gb70, you will need to either buy a USB cord with alligator clips already installed or make your own with an old USB phone charger by cutting one end off the cord and stripping the black and red wire and place some alligator clips on the wires you stripped, once you have your USB cord ready plug it into the USB port in the Nocco device, now you will need a car battery charger of your choice that is capable of trickle charging, now connect the positive of the trickle charger of the trickle charger to the positive of the Nocco gb70 and then connect he negative of the trickle charger to the negative wire on the USB side of the Nocco and now you can start your trickle charge and monitor the charging process with a multimeter and once you get a few volts reading using tjr trickle charger you can remove it and begin to charge it using the standard method. Goodluck!!

[@Hellcatsrforbosses]

Thank you very much for your contribution to our Society thank you.

[@AveRage_Joe]

Great Job!! I think I would have ripped it open lol Hey what house shoes were you wearing?

[@jimginnyohio]

Thanks man! Ripping it open was my initial thought too. But since it wasn’t mine and I saw how much those things cost, I thought I better try something less invasive first…and it worked! My house shoes are Sketchers. Pretty comfortable since they have memory foam with arch support too. I got them at JCP, but Amazon has them too. Here’s a link so you can have a better picture of them: amzn.to/3HSCtMF Take care buddy!

[@TheChadWork2001]

Good work Ohio Guy these X series from Noco have this problem and you showed us how to fix it

[@Upnorthlandclearing]

Super grateful worked great to get mine working like new again

[@jimginnyohio]

@@Upnorthlandclearing I’m happy to have helped!

[@alejandro_canitos1]

I have the noco GB70 and it charges well and everything works fine, the lamp and the USB ports! But when I try to use it to jump start the vehicle does not start and I try to do it manually and all I can hear is the click of the relays but not power go out form the NOCO!?? :( 😢😢

[@mim555]

Same here did u find out how to fix it?

[@frostriver4547]

Same model and same problem 🙄

[@tomw7973]

Me too, any fixes anywhere?

[@damian4483]

Can I connect the trickle charger directly to the clamps on the Noco box, or do I have to put the negative clamps into the actually charger like you have

[@jimginnyohio]

@@damian4483 You will need to do it like I did otherwise the battery will not charge.

[@damian4483]

@@jimginnyohio ok so black terminal needs to go into the “in/out” of the battery and the red terminal goes straight onto the battery box red terminal itself

[@marlowstansfield9281]

This video is superb I understood everything that was explained I'm now going to put it unto practice thanks I'll let you know how it goes

[@marlowstansfield9281]

I am extremely grateful my charger is now fixed and working like new thank you so much for you video really helped alot 😀

[@jimginnyohio]

@@marlowstansfield9281 I’m glad that helped out!

[@newsigmundfreud3023]

*GENIUS. Thank you!*

[@reytorres6767]

This revived my GBX75 after 2 years!

[@jimginnyohio]

Nice! I'm glad that worked for you. Cheers!

[@darylw792]

I have a question about the SUN 1000w grid tie in inverter with limiter. Can one set these inverters up with solar and battery at the same time?

[@jimginnyohio]

Yes, there are several folks that have posted videos for how they did that. Search KZbin for Paul Kennett and also Old Time Engineer. I believe they have both posted some videos covering that.

[@darylw792]

@@jimginnyohio Thank you

[@terrym1964]

I have the Noco 1 trickle charger. I'm guessing it will require more than 15 - 20 mins for that initial boost with it being only 1 amp ?

[@JeffPerkins-w3j]

Jim what would you charge to fix mine I have watched your video my box hasn't responded to anything

[@jimginnyohio]

@@JeffPerkins-w3j I can try, but no guarantee since it could be something more than just a battery issue. Let’s wait until after the holidays if you can wait. I’m always up for a challenge.

[@JeffPerkins-w3j]

@jimginnyohio thanks sounds good until then merry Christmas

[@JeffPerkins-w3j]

Jim got the jump box working today hooked up to one of my road tractor with it running attached to running truck it started charging thanks for your video merry Christmas

[@jimginnyohio]

@@JeffPerkins-w3j Glad to hear that! Good job! Merry Christmas to you too.

[@automat3000]

It's mad that Noco itself has an override / force mode for jumping particularly dead batteries, but it doesn't have a feature for the same circumstance for itself. I've just bought a GBX45, and heard that unlike the regular GB series, this can happen a bit too easily. I already have a Noco Genius trickle charger i could use, and I'm going to buy a USB lead with croc clips ready for if it ever happens.

[@brentmcmahon8188]

Can you just put cables on a good start battery to charge it up enough .

[@jimginnyohio]

No. It will not charge thru the jumper cables.

[@OBrienTruckers1934]

So I have a question to ask. Unless I missed the answer, if you are successful using your fix, how do you keep from having the issue happen again? Is it making sure you keep the jump started charged?

[@jimginnyohio]

@@OBrienTruckers1934 Yes, that is the key. If it’s not used for a long period of time, it’s still important to maintain it over time by plugging it in for a quick top-up charge cycle.

[@damianrainey6417]

@@jimginnyohio Yes every month you will need to charge it up again otherwise you will loose total connectivity.

[@tavytube1]

Mine was fine 2 days ago, I Jumpstart a small car with a dead battery and now my charger is completely dead.I plug it in with its own C type charger and there are no lights whatsoever. Please do you have an idea of what can I do. Thanks.

[@rickss69]

@@tavytube1 Hook it up to your battery in your running vehicle for a brief period and it should then charge normally with the usb-c cable.

[@ΧΡΗΣΤΟΣΣΑΜΑΝΤΑΣ-ρ5ξ]

I have NOKOGB70 and I gave it 24v power and it is not charging help what can I do to repair it.

[@patmoon3183]

The BMS gets power from the power supply as well. Most of the time the battery voltage drops below the minimum voltage allowed for it to charge the battery.

[@trtrecoveryuae]

Super video, I also have a gbx155, I completely followed your method before charging there was 8v, now there is 14v but I still can't charge it, I tried different charging methods and I still get the fix red light. The booster works and charges up to 50% with the trickle charger but never with the USB C. Do you have any idea why it won't charge? Thanks for your help

[@mwolfe83]

Great video. Thank you sir.

[@chickenbob-w7j]

I don't have this issue but was intrigued by the subject matter! My question is something that has always given me pause: USB connections are usually rated for 5V, yet this is a 12V charger. You were able to charge 12V thru the USB cable and port. Could the 12V have damaged the USB output on the NOCO, preventing future use of the port for say, charging cell phones? Or, are 5V & 12V close enough that at low amperage there is no problem? I guess, I'm always worried about frying something if the voltages don't match. Thank you for this very informative tutorial.

[@chickenbob-w7j]

I rewatched and see that you charged through the USB-C port, not the cell phone charging port. So, never mind!

[@Graham_Wideman]

@@chickenbob-w7j Also, USB-C has a variety of so-called "Power Delivery" ("PD") schemes, where it can switch to 12V or any of a selection of higher voltages up to 48V. At max 5A that's 240W. Not saying that's used in the review product, just that you cannot assume that USB over USB-C connector runs at 5V. It does default to 5V, and the power supply and recipient devices have to communicate with each other to negotiate a higher voltage and power setting.

[@ZacharyMorris-ms7zi]

I followed your steps to check the battery voltage bypassing the BMS and I’m showing 13.2 Volts on the battery but the box will not charge and does a slow blink on the charging error led. Any idea as to what it might be preventing the unit from charging?

[@jimginnyohio]

@@ZacharyMorris-ms7zi It’s possible you have a bad cell, or unbalanced cells. I would try totally draining the batteries and try again.

[@jerrystephensen9486]

Awesome video very good information thank you

[@emilg]

What if I don't get any kind of lights when pressing any button? I also don't see any lights when I plug in the USBC charger. It seems completely dead. Should I still try this trick?

[@jimginnyohio]

I would still give it a try since no lights at all might simply mean the battery is completely dead.

[@SOUND-TECH-MAX]

Salve una info, posso continuare a caricare la batteria baipassando la scheda ? Con il sistema normale non carica . Adesso sono arrivato alla 2 tacca con il tuo sistema , ma c'è il pericolo che la batteria si guasta baippassando il sistema ? Sei grande grazie x i tuoi consigli preziosi buone feste

[@jimginnyohio]

Yes, you should be able to continue charging this way until fully charged. Just be sure to monitor closely so the battery isn’t overcharged. Otherwise, you can overheat the battery and start a fire.

[@noahroderick5677]

Ok so your method did help my charge my noco jump pack but now it will not take a charge through the usb c any recommendations should be helpful

[@jimginnyohio]

@@noahroderick5677 Maybe a bad cable/charger.

[@HelikopterJacob]

I have my gb150 open can plug in directy to the battety terminals?

[@jimginnyohio]

@@HelikopterJacob Yes, you can. But only charge the battery up to about 10 volts and then return things to normal so the BMS can continue to protect things. Good luck!

[@HelikopterJacob]

@@jimginnyohio thank you will try that

[@DougChristianson-i1m]

Mine is 50percent charged but wont charge any further any suggestions

[@jimginnyohio]

@@DougChristianson-i1m Try discharging it and recharging several times and it will eventually regain the lost power.

[@speedfreak8200]

Try pushing the red exclamation point symbol ​@@jimginnyohio

[@timothymurray9684]

Awesome video..Great info!! Thank You!!

[@a64738]

I had mine for 5+ years , it charges but have in 20 - 30 start attempts never started ANYTHING at all... It just runs the lights and make the click click click sound. And the hold button 3 seconds to pass the safety do nothing.

[@pbr549]

Jim, thank you for the video. Tomorrow, I plan to upload a video on my partially disassembled NOCO boost, same item. I placed it back on charge with a 200W charger with the factory cable. It’s pulling 4 watts at the moment. To disassemble it I bought a triangle bit set. Anyway, you have won my first meme vinyl sticker. Yes, I am using a PC with a router that makes me look like I am in Kenya and won the lottery. No Joke. Just a lie. I live in BAMA. Let us all know what you think the battery is. Thanks again.

[@eshock-z7k]

Looking forward to your upload. I might need to open my gbx155. Used my variable power supply set to 10 volt 0.5mA via the usb-c clips same as Jim. However after I plugged in my regular usb-c charger for 1.5 hours but still no lights coming on...perhaps I need to leave it like that for a day or so.

[@pbr549]

@@eshock-z7k What I ended up doing after seeing on KZbin. Was to use the charger for the cigartte lighter. I left my truck running for 20 minutes. The power pack went into fast charge mode and that solved the problem. It the charged normally. My pack is back to normal. good luck.

[@eshock-z7k]

​@@pbr549was that a noco car charger? I tried that an hour ago with just a regular C-Type cable in my car but no such luck after 20mins

[@ferniefuentes3690]

Just curious and hope you see this Jim. Is there any long term impact to the batteries in the charger by letting the batteries "die" and then using this process to revive them? I have a different portable unit, Winplus car starter/USB power pack, that is possibly having the same issue. I'm a bit concerned that the lithium batteries may be permanently affected but the total discharge and then reviving them.

[@jimginnyohio]

Lithium batteries normally don't have a memory like the old nicad/nickel batteries. I've had some lithium (18650) batteries sit dead for several years and I was still able to revive them for use again. It's best to recharge them as slowly as possible though. Also, they may require several full charge/discharge cycles before they are fully revived to a fully functional state. Good luck with the Winplus unit!

[@ferniefuentes3690]

@@jimginnyohio Thanks Jim. I ask this question because I used to fly RC planes, maybe I'll get back into it, so I'm very cautious about LiPo batteries. When they swell, BTW, laptop LiPo's swell too, then it's time to replace the batteries. I didn't want to invest in getting this device operational only to have it blow up in my car. Really appreciate the work you are doing to revive batteries. One would think that the manufacturers would build a bypass into the device to resurrect it from deep discharge but nooooooo, that would cost a few pennies too much...

[@jimginnyohio]

@@ferniefuentes3690 Yes, I’m familiar with the LiPos since I too used to fly planes. There is a big difference in Lithium Polymer versus Lithium Ion batteries. While the Ion batteries can indeed catch fire, they are far safer than the LiPos that we used to place into a fire safe bag when charging. If a LiPo pouch cell swells too much, it will usually vent and catch fire. However, with the Lithium Ion cells, they will usually just vent unless they are violently damaged. I stressed in the video to only bring the batteries up to a working voltage and then switch back to charging thru the BMS. That is an important step to remain protected and minimize risks to the batteries, device, and yourself.

[@RobinDewitz]

I have GBX 155 also that is completely dead even though it has been plugged in the whole time ive had it. i tried today to charge it using the cigarette lighter that comes with it, thinking I might have a bad cord . Nothing yet. iIs it possible I fried the board by having it plugged in all the time?

[@jimginnyohio]

@@RobinDewitz It’s really not a good idea to leave it plugged in all the time. You can try getting a new cord. Maybe that will help. Try depleting the batteries completely and try again..

[@costiciuca9506]

Hello. I have a GB70 and I did your method but I have charged it for 3 days and it has barely reached 10v... why is it charging so hard? at first I was charging it with 12v now I use another 16v. from 2.4v to 10v in 3 days seems a lot to me. thank you

[@jimginnyohio]

It's possible you have a damaged or bad cell in there. In that case, this charging method won't work. Sorry! You can try completely draining the battery pack and attempt again a couple times. Sometimes that will help get things working again.

[@costiciuca9506]

⁠@@jimginnyohiohow I drain the battery?

[@jimginnyohio]

@@costiciuca9506 Connect everything as I explain how to charge, but then use the positive and negative leads to connect to some sort of load instead until the battery is completely drained. then try charging again.

[@bandito5370]

Could you connect trickle red to red and black to black on noco?

[@jimginnyohio]

@@bandito5370 If your unit isn't charging via the normal method, you must bypass the Battery Management System to get it to work again. Trickle charging via the battery clamps will not work since that goes thru the BMS.

[@gustavonavarro-l6u]

Excelente video, gracias, funciono a la perfección, la falla era 4 veces la luz de advertencia y no cargaba.

[@antorreon]

Mine charges but when I try to use it to jump a vehicle it won’t turn on

[@jimginnyohio]

@@antorreon You may need to perform a few charge/discharge cycles to recondition the batteries before it is fully functional again.

[@miralemnuhbegovic1612]

How do u do that?

[@buttonmonkey6845]

Maybe just switch the torch light on for a bit to run it down, then charge it again.

[@offgridwanabe]

Success where there's a will there's a way lol BMS are tricky things, most of use would have baled into the screws right away lol

[@jimginnyohio]

Yep, That was my initial thought too. But since it wasn’t mine and those things are so expensive, I figured I would try other options first. I guess even a blind squirrel can find a nut now and then, huh? ;-)

[@Matlauk]

Sorry to get on your case but did you say "one volt of current"? lol

[@rickss69]

Connect it to a good battery until it reaches a certain voltage and it will then be able to accept a charge through the normal usb-c cable. A battery in a running vehicle speeds this process up.

[@bandito5370]

@@rickss69 does the unit need to be turned on?

[@reytorres6767]

Thank you so much!

[@JeffPerkins-w3j]

Jim I would pay to have mine fixed seen your video no luck

[@leedempster4743]

Mine is just dead not turning on not charging .

[@jimginnyohio]

@@leedempster4743 Yes. If the battery gets too low, it will not turn on at all. Try my fix and you should be able to restore it.Good luck!

[@SOUND-TECH-MAX]

Very good funziona 🎉🎉🎉🎉🎉🎉🎉🎉🎉

[@EdwardAJeffries]

Great video and explanation. Thank you !

[@matt41597irascible]

Plug it into a trickle charger. Saved you 30 mins of waffle.

[@vtec230]

Output won't work unless unit is on! 🤙

[@brentmcmahon8188]

The electric factory is 2 hrs and the one you are using it takes 11 hrs.

[@geekazoid]

That was a rather long-winded 30min video. Here's the summary: Connect multimeter ground to either USB port and the Positive output on the unit to see the real pack voltage. You will be able to see it creep up from the USB charger. My GB50 draws 1.5A at 5V from USB, and the pack voltage creeps very slowly. If you are going to try to wake it up from the dead state he describes, don't do what he did. Instead, just connect it to a good battery to revive it. It's fine to add

[@horsey7408]

Are you saying just hook it up to my car battery like I’m going to jump and that should revive it?

[@geekazoid]

@horsey7408 that seems to be the case

[@mikeballew6300]

His video is OK but 100% backwoods the NOCO Boost is protecting the LOAD side from short and from reversing the jump clamps there for the (+) jump clamp is going through the (BMS) therefor the bypass is right the (-) on the charge side is a direct to (-) on the batters and the (+) is direct to the clamp (+) this is not typical this is reversed back on all typical e-bikes batterys and Hybrid car batterys the (BMS) IS direct to the (+) Charge port direct to the (BMS) there are not protecting the (+) & (-) terminals on a typical (BMS) P.S the (BMS) Job is also to balance charge all the battery cells and to protect the lithium ion battery from being charged with the proper lithium ion charger

[@MaryCarr-j3l]

🎉🎉🎉🎉😢🎉

[@ManuelSalgado-ri6wz]

He said a triangle screw bolt