[Acher]

Finaly, after experiments witch SC instead of battery and with powering through battery charging USB port, I have ended with this “desktop” modification of Mojo:

As a solution I used external power supply MEAN WELL GSM36E07-P1J. It’s switching power supply with short circuit, overload and over voltage protection. Output voltage is 7.5 DC and 4.32A rated current -
https://www.tme.eu/cz/en/details/gsm36e07-p1j/plug-in-power-supplies/mean-well/

Fully charged Mojo battery has output voltage approximately 8.2V to 8.3V DC and power voltage that Mojo requires from battery is approximately 7-8.5V DC. Because output voltage of power supply is 7.5V DC, so it’s s in this acceptable range, I can use it directly instead of the battery. It needs only a minute to drill a one small hole into the frame of Mojo and cable with 5.5/2.1mm power socket connected to the battery PH plug (2PIN, 2mm).

Between Mojo and power adapter I have added small external box with electrolytic capacitators. Specifically, block made up of 11 parallelly connected HITANO 10000uF/10V Low ESR capacitators forming 110mF/10V capacity.

The First benefit of this “desktop” modification is that after disconnecting 5V charging power supply the voltage converter used to charge the battery is deactivated and the Mojo stops getting so hot.

The Second is that with this connection we don't have to wait for the SCs, that were previously used to replace the battery, to charge, and the Mojo goes on immediately. The capacitors are connected as filter capacitors to the power supply, so there is no delay in switching on.

The Third, and most important, benefit is the sound improvement created by overall tightening and improved dynamic of sound.

So far, I’m satisfied with this modification, its behavior and improved sound of Mojo.

 

[vandung2510]

Finaly, after experiments witch SC instead of battery and with powering through battery charging USB port, I have ended with this “desktop” modification of Mojo:

As a solution I used external power supply MEAN WELL GSM36E07-P1J. It’s switching power supply with short circuit, overload and over voltage protection. Output voltage is 7.5 DC and 4.32A rated current -
https://www.tme.eu/cz/en/details/gsm36e07-p1j/plug-in-power-supplies/mean-well/

Fully charged Mojo battery has output voltage approximately 8.2V to 8.3V DC and power voltage that Mojo requires from battery is approximately 7-8.5V DC. Because output voltage of power supply is 7.5V DC, so it’s s in this acceptable range, I can use it directly instead of the battery. It needs only a minute to drill a one small hole into the frame of Mojo and cable with 5.5/2.1mm power socket connected to the battery PH plug (2PIN, 2mm).

Between Mojo and power adapter I have added small external box with electrolytic capacitators. Specifically, block made up of 11 parallelly connected HITANO 10000uF/10V Low ESR capacitators forming 110mF/10V capacity.

The First benefit of this “desktop” modification is that after disconnecting 5V charging power supply the voltage converter used to charge the battery is deactivated and the Mojo stops getting so hot.

The Second is that with this connection we don't have to wait for the SCs, that were previously used to replace the battery, to charge, and the Mojo goes on immediately. The capacitors are connected as filter capacitors to the power supply, so there is no delay in switching on.

The Third, and most important, benefit is the sound improvement created by overall tightening and improved dynamic of sound.

So far, I’m satisfied with this modification, its behavior and improved sound of Mojo.

Yeah i'm too dumb for these mods lol )
But thank you for showing it tho, for those who know.
Also, why on earth did you drill on the 2x3.5mm side?

 

[vlach]

I did the same mod without drilling anything, i just loosened the screws a little bit, just enough to create space for the wires to get out. It doesn't matter since it is stationary/permanent desktop.
Dust getting in? No problem, i placed a thin strip on black electrical tape over the creased area.

 

[Acher]

Yeah i'm too dumb for these mods lol )
But thank you for showing it tho, for those who know.
Also, why on earth did you drill on the 2x3.5mm side?

I didn't drill through the second 3.5mm audio output. The drilled hole with the cable and the 5.5/2.1mm power connector is placed right in between the two 3.5mm audio outputs

 

[Acher]

But if you are just talking about the used side of the Mojo, it seemed better as the drilling side. On the opposite side there are 4 connectors (Coax, 2xUSB, Toslink). So there is very little space for a new hole. And even though I only use optical, I didn't want to remove any of them.

 

[vandung2510]

But if you are just talking about the used side of the Mojo, it seemed better as the drilling side. On the opposite side there are 4 connectors (Coax, 2xUSB, Toslink). So there is very little space for a new hole. And even though I only use optical, I didn't want to remove any of them.

Yeah this is what i meant

 

[zender]

Finaly, after experiments witch SC instead of battery and with powering through battery charging USB port, I have ended with this “desktop” modification of Mojo:

As a solution I used external power supply MEAN WELL GSM36E07-P1J. It’s switching power supply with short circuit, overload and over voltage protection. Output voltage is 7.5 DC and 4.32A rated current -
https://www.tme.eu/cz/en/details/gsm36e07-p1j/plug-in-power-supplies/mean-well/

Fully charged Mojo battery has output voltage approximately 8.2V to 8.3V DC and power voltage that Mojo requires from battery is approximately 7-8.5V DC. Because output voltage of power supply is 7.5V DC, so it’s s in this acceptable range, I can use it directly instead of the battery. It needs only a minute to drill a one small hole into the frame of Mojo and cable with 5.5/2.1mm power socket connected to the battery PH plug (2PIN, 2mm).

Between Mojo and power adapter I have added small external box with electrolytic capacitators. Specifically, block made up of 11 parallelly connected HITANO 10000uF/10V Low ESR capacitators forming 110mF/10V capacity.

The First benefit of this “desktop” modification is that after disconnecting 5V charging power supply the voltage converter used to charge the battery is deactivated and the Mojo stops getting so hot.

The Second is that with this connection we don't have to wait for the SCs, that were previously used to replace the battery, to charge, and the Mojo goes on immediately. The capacitors are connected as filter capacitors to the power supply, so there is no delay in switching on.

The Third, and most important, benefit is the sound improvement created by overall tightening and improved dynamic of sound.

So far, I’m satisfied with this modification, its behavior and improved sound of Mojo.

VERY interesting and promising!
I have two question about this configuration.
First of all I'd like to know why you used 11 10000uF/10V capacitors , I'm totally ignorant about electronics, sorry....
I have a 8v 4a switching psu, do you think it would fit?

Thanks for sharing such an interesting mod.

 

[Acher]

VERY interesting and promising!
I have two question about this configuration.
First of all I'd like to know why you used 11 10000uF/10V capacitors , I'm totally ignorant about electronics, sorry....
I have a 8v 4a switching psu, do you think it would fit?

Thanks for sharing such an interesting mod.

You can find answers to your questions in a private message

 

[icnaiwhimor1975]

Mojo requires 7V min. upto 8.5V max.

that is, if the battery drops below 7 volts it will not turn on

7 volts is 3.5 volts on each battery

while 2s bms disconnects batteries at 2.5 volts
which equals 5v to power the mojo

Has anyone tried to power the mojo by simply supplying power to the built-in microusb connector?

in theory, this will greatly increase the operating time (now the shutdown time is at 3.5 volts and will be at 2.5 volts)

It may not turn on without a battery

 

[onelivewire]

@icnaiwhimor1975 you may want to review the rest of the thread. Powering via USB has been discussed in depth.

I for one converted to powering using a power supply directly to the molex battery terminal because I had intermittent shutoffs with the 5V micro USB port, even during playback and controlling for heat.

 

[vlach]

Has anyone tried to power the mojo by simply supplying power to the built-in microusb connector?

I did that for a while using an external battery bank (for portability), however you are essentially using the charging circuit to power the Mojo.
It works, but charging & playing at the same time causes the unit to overheat.
As onelivewire stated above it is better to connect a power supply directly to the battery molex connector thus bypassing the charging circuit, however that removes the portability factor and turns it into a permanent desktop DAC.
The one advantage to the external battery bank connected to the 5V usb port (with internal battery removed) besides portability, is that the external battery bank holds its charge for several weeks when not in use, which is not the case with the internal battery.