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Fix for Noco boost not charging - success
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Ringo539
Posted 4/5/2024 09:31 (#10694736)
Subject: Fix for Noco boost not charging - success


West-Central IL		A public service announcement for those that have this issue

I have a Noco gbx155 that had been pulled down too low and refused to take a charge.

First things first, try the 12volt adapter in a vehicle to charge, this sometimes works better as the USB port is limited to the amps it can carry.

That was not working for me this time.
Through you tube I found someone who had tried this trick.
I purchased a usb-a to alligator clip adapter for $6 on Amazon

Put the USB into the output port on the gbx.
Using a small trickle charger attach only the ground to the USB adapter.
Attach the positive lead from charger to positive battery clamp on the gbx.
At this point using a multimeter you can test the voltage of the internal battery. Mine was below 8 volts.
Turn on the trickle charger.
The multimeter showed a slow uptick in voltage over the next 10 minutes.
Use a very slow rate of charge (1 amp in this case) and do not
leave it unattended.
Once the internal battery on the gbx reached about 10 volts I started to get light or activity if I pressed a button on the gbx (previously no response).
At 12 volts I placed it on the car charger and it began to take a charge for the first time in a month!
This morning full charge and ready to use
The gbx is now showing about 16.5 volts with the multimeter, again using the usb-a adapter to complete the ground circuit.

Give it a try, hope it works for you.


Edited by Ringo539 4/5/2024 09:44




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tedbear
Posted 4/5/2024 10:17 (#10694799 - in reply to #10694736)
Subject: RE: Fix for Noco boost not charging - success


Near Intersection of I-35 & I-90 Southern Mn.		This seems consistent with a problem I have from time to time. If I have a battery that is really discharged, my "smart" chargers will indicate that the battery has failed. I check the voltage with a meter. I take an old fashioned "dumb" charger and put it on the battery for a while at a low setting, I leave it on low and come back after a while, disconnect the charger and test the voltage.

If the voltage has come up some, I then try the smart charger again. Often the smart charger then thinks that the battery is OK and proceeds to charge it. If the battery has in fact failed then this approach doesn't work and its time for a replacement battery.

I believe you may be doing the same thing by using the 1 AMP NoCo to bring the other NoCo up in charge a bit and then it can be recharged normally. I believe it is important to use a low setting or your 1 AMP NoCo when trying this trick. Don't get in a hurry and try to rush things by using a larger charger.
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ry0972
Posted 4/5/2024 10:51 (#10694833 - in reply to #10694736)
Subject: RE: Fix for Noco boost not charging - success


central sask		I bought a couple GBX155 BoostX when they first came out.
One didnt get opened/used for a year or more after I got them.
I hooked up the USB charger after one use and it wouldnt take a charge, car adapter didnt work either.
I will have to try your trick.
The GB 150 is a far better unit than the GBX155 are!!!!!
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Ringo539
Posted 4/5/2024 12:01 (#10694922 - in reply to #10694799)
Subject: RE: Fix for Noco boost not charging - success


West-Central IL
tedbear - 4/5/2024 10:17

I believe it is important to use a low setting or your 1 AMP NoCo when trying this trick. Don't get in a hurry and try to rush things by using a larger charger.


Yes, for anyone wanting to try this, I believe this is an important step not to overlook.

I stayed and kept checking with the multimeter, took less than 10 minutes to then be able to charge with the vehicle adapter.
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mac4440
Posted 4/5/2024 13:37 (#10695050 - in reply to #10694736)
Subject: RE: Fix for Noco boost not charging - success



I have issues with mine not wanting to charge up using the 12v charger, but if I use the USB charger it will
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Straitpipe
Posted 4/5/2024 17:00 (#10695261 - in reply to #10694736)
Subject: RE: Fix for Noco boost not charging - success


East Central SD		.
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Caleb1456
Posted 4/5/2024 17:54 (#10695292 - in reply to #10694736)
Subject: RE: Fix for Noco boost not charging - success


Magnolia, KY		Marking
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jdironman
Posted 4/5/2024 20:21 (#10695462 - in reply to #10695292)
Subject: RE: Fix for Noco boost not charging - success


Nw Iowa		Marking
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jsfarms86
Posted 4/6/2024 04:29 (#10695747 - in reply to #10695462)
Subject: RE: Fix for Noco boost not charging - success


Northeast Nebraska		Marking
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Tazzerblue
Posted 4/6/2024 10:39 (#10696128 - in reply to #10694736)
Subject: For all you just Marking this post.. put that in the subject matter..


SW MN		Or are you just too LAZY
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Min farmer
Posted 4/6/2024 11:31 (#10696188 - in reply to #10696128)
Subject: RE: For all you just Marking this post.. put that in the subject matter..


NW Minnesota		.
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Caleb1456
Posted 4/10/2024 13:56 (#10701722 - in reply to #10694922)
Subject: RE: Fix for Noco boost not charging - success


Magnolia, KY		Just did this last night. It works!
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