Chord Mojo(1) DAC-amp ☆★►FAQ in 3rd post!◄★☆
Aug 3, 2019 at 4:17 PM Post #39,016 of 42,765
Just to make things a bit clearer in case someone entertains the idea of buying a replacement battery from Chord.The price of the battery from mojo most certainly is north of 100$, without installation or such service. I agree with you that it shouldn't, but it is.

Would still be great if someone had a mojo with a battery pre-swelling so we could check if we could get a sub $100 battery replacement, maybe even any regular $5-10 one of similar spec:
https://hobbyking.com/en_us/quanum-fpv-headset-battery-7-4v-1500mah-3c.html?wrh_pdp=7&___store=en_us
https://hobbyking.com/en_us/turnigy-1000mah-2s-20c-lipo-pack.html?wrh_pdp=7&___store=en_us
Here you are - battery replacement within the EU. https://artsexcellence.com/chord-mojo-batterij-reparatie.html?___store=ae_en&___from_store=ae_nl
https://www.audiosanctuary.co.uk/chord-mojo-replacement-battery-service.html
After nearly four years of this threads existence, no one has succeeded in identifying any $10 batteries that contain the same battery management circuitry as was included within the Chord battery pack. Good luck to you if you want to continue your search, but you will spend years engaged in an ultimately fruitless search.
 
Aug 3, 2019 at 5:25 PM Post #39,017 of 42,765
Here you are - battery replacement within the EU. https://artsexcellence.com/chord-mojo-batterij-reparatie.html?___store=ae_en&___from_store=ae_nl
https://www.audiosanctuary.co.uk/chord-mojo-replacement-battery-service.html
After nearly four years of this threads existence, no one has succeeded in identifying any $10 batteries that contain the same battery management circuitry as was included within the Chord battery pack. Good luck to you if you want to continue your search, but you will spend years engaged in an ultimately fruitless search.

The bms isn't in the batterypack itself in the Mojo though, right? Frankly, the stock Mojo doesn't have a working bms solution, or else this wouldn't happen, so it seems like a pointless endeavor either way. If possible the bms should be replaced, but since I believe it is integrated into the PCB it will be hard. Probably not worth it with so many other functional DACs out there from more reputable manufacturers.
 
Aug 3, 2019 at 6:20 PM Post #39,019 of 42,765
Yes It can! It's easy to open the Mojo and unplug the battery - and even take it out. Then just use it as a desktop DAC with both the power USB cable and USB data cable connected. I use two different USB cables in two different USB ports in the Laptop. Put the Mojo on a Gel pack (from the freezer) wrapped in a piece of cloth (Don't put the Mojo directly on the gel pack!). Now everything is nice and cool :)

Just to make things a bit clearer in case someone entertains the idea of buying a replacement battery from Chord.The price of the battery from mojo most certainly is north of 100$, without installation or such service. I agree with you that it shouldn't, but it is.

Would still be great if someone had a mojo with a battery pre-swelling so we could check if we could get a sub $100 battery replacement, maybe even any regular $5-10 one of similar spec:
https://hobbyking.com/en_us/quanum-fpv-headset-battery-7-4v-1500mah-3c.html?wrh_pdp=7&___store=en_us
https://hobbyking.com/en_us/turnigy-1000mah-2s-20c-lipo-pack.html?wrh_pdp=7&___store=en_us

Good grief, you quote a post from 2.5 years ago before anyone knew the remote possibility of using Mojo without a battery.

Still, as @Deftone alludes to previously, it’s not the way it was designed and there may be issues with dynamics or other unknown drawbacks depending on what is hooked up to the Mojo’s output.
 
Aug 3, 2019 at 6:29 PM Post #39,020 of 42,765
The bms isn't in the batterypack itself in the Mojo though, right? Frankly, the stock Mojo doesn't have a working bms solution, or else this wouldn't happen, so it seems like a pointless endeavor either way. If possible the bms should be replaced, but since I believe it is integrated into the PCB it will be hard. Probably not worth it with so many other functional DACs out there from more reputable manufacturers.

Take any lithium battery and leave it plugged in for months on end and you could get the same swelling. I can’t think of many portable devices that are typically used permanently plugged in. Years ago my iPod Classic died because it was permanently plugged in to a dock (swollen battery). My laptop battery died because I had it plugged in for months (swollen battery). I learned my lesson and there is solid data and recommendations from the experts to not leave lithium batteries constantly above 4.10V, or left discharged for too long.

Mojo stands for Mobile Joy. Use it portably and buy a proper desktop device if you want to use a desktop device.

Edit: One may be lucky and have no issues, but the risk is definitely there.
 
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Aug 3, 2019 at 9:46 PM Post #39,021 of 42,765
Just to make things a bit clearer in case someone entertains the idea of buying a replacement battery from Chord.The price of the battery from mojo most certainly is north of 100$, without installation or such service. I agree with you that it shouldn't, but it is.

Would still be great if someone had a mojo with a battery pre-swelling so we could check if we could get a sub $100 battery replacement, maybe even any regular $5-10 one of similar spec:
https://hobbyking.com/en_us/quanum-fpv-headset-battery-7-4v-1500mah-3c.html?wrh_pdp=7&___store=en_us
https://hobbyking.com/en_us/turnigy-1000mah-2s-20c-lipo-pack.html?wrh_pdp=7&___store=en_us

The Mojo battery was available for about $70. It is a 2cell pack with integrated electronics. It is possible to disassemble an old battery, remove the pcb and build a new pack with cells from the market, but it is not trivial.
All this information can be found in this thread.
I think $70 is an ok price for a proprietary pack like this, but I wish it would be more easily available.
 
Aug 4, 2019 at 10:47 AM Post #39,022 of 42,765
Here you are - battery replacement within the EU. https://artsexcellence.com/chord-mojo-batterij-reparatie.html?___store=ae_en&___from_store=ae_nl
https://www.audiosanctuary.co.uk/chord-mojo-replacement-battery-service.html
After nearly four years of this threads existence, no one has succeeded in identifying any $10 batteries that contain the same battery management circuitry as was included within the Chord battery pack. Good luck to you if you want to continue your search, but you will spend years engaged in an ultimately fruitless search.

I was hoping to be able to fit the battery from my portable DAB, in the Mojo. Or one of the same type. My DAB is a Pure PocketDAB 1500, and I have had it for fourteen years. I am not sure but I think it still holds most of the charge it did when new. Fourteen years old and still running perfectly, and on the original battery.
 
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Aug 4, 2019 at 11:38 AM Post #39,023 of 42,765
I was hoping to be able to fit the battery from my portable DAB, in the Mojo. Or one of the same type. My DAB is a Pure PocketDAB 1500, and I have had it for fourteen years. I am not sure but I think it still holds most of the charge it did when new. Fourteen years old and still running perfectly, and on the original battery.
OK, so your DAB battery is still OK, but you still need to ensure that your DAB battery works for the same voltages as the Mojo battery, and then that the DAB battery also has the same battery protection circuitry as the Mojo battery.
If your Mojo battery is still working ok, then I suggest stop worrying and wait until it stops working, before considering alternative batteries.
 
Aug 6, 2019 at 7:23 AM Post #39,024 of 42,765
Good day everyone,
I just purchased this little beast and so far it's meeting expectations other than the 4 hour charge time. >.<
Anyhow, I'm wondering if anyone has found a different, short charging cable? The stock one is too stiff.

Thanks!
 
Aug 6, 2019 at 8:28 AM Post #39,027 of 42,765
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Aug 8, 2019 at 6:24 AM Post #39,029 of 42,765
I connected the mojo in line uot to a mini amp: fosi t20 and the result was very disappointing, in bluetooth you feel much better.
Why does the mojo connected to the f20 feel bad?
it's how I felt confusion in the sound.
 
Aug 8, 2019 at 7:01 AM Post #39,030 of 42,765
I connected the Mojo to my laptop (windows 10) through the USB port and when I try to play music the sound only comes from my right driver and it sounds like a low, screeching noise. Am I doing something wrong? My desktop amp doesn't have this issue.


I guess I might as well add in my short impression of what I've been hearing so far from the Mojo: my setup has been iPhone 6 --> Chord Mojo --> Audio-Technica ATH ADX5000.

I think it's pretty simple to me in that the Mojo seems to highlight the sound signature of the headphone. The ADX5000 is a neutral headphone with amazing extension at both ends. The Mojo highlights these extensions and gives it the needed impact in order for notes to sustain longer. I'd go so far as to say that the Mojo could be my reference from here on out even though I have the Violectric V100 as my desktop amp.

I'd say that I'm pretty impressed so far. I feel content, which is great. Also add that the Mojo has a ton of power to boot makes it a solid purchase for me. I bought mine for $300 used. It's also pretty cute to look at and hold. :p
 
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