How to use Qudelix-5k internal battery while connected through USB C? CS
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Junior Member 2 posts bop Junior Member 2 posts
bop
Hello,
 
I want to use my Qudelix-5k as a USB DAC. I'm not interested in the Bluetooth functionality at this time. When I connect it through USB C to my phone, the phone constantly recharges the device and keeps it at 100%. What settings do I need to use so that the Qudelix will run off of it's internal battery, thus not draining my phone as it is being topped off with my phone's battery? I want the phone to provide the audio, nothing else. I've tried turning charge off, and it still keeps the Qudelix at 100% battery. I've used the device in this configuration for 10 hours and not seen any change. I want to prolong my phone's battery throughout the day, it drains significantly faster while topping off the Qudelix's battery.
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DeJaVu Senior Member 122 posts
DeJaVu
What you want exactly, cant be done with this device.
When you disable charging it wont charge the battery but will still be powered by the phone. In this scenario, if battery is at 100% when you plug it to the phone, it will remain at 100%. But if its at 50% then it shouldnt increase gradually to 100%.
Even though it isnt what you exactly want its still pretty much fine, as it draws pretty low current, it was something around 30mA when i measured it quite some time ago.
 
Being powered by the device when plugged in is a feature which spares battery cycles and prolongs the battery longevity.
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bop Junior Member 2 posts
bop
What you want exactly, cant be done with this device.
When you disable charging it wont charge the battery but will still be powered by the phone. In this scenario, if battery is at 100% when you plug it to the phone, it will remain at 100%. But if its at 50% then it shouldnt increase gradually to 100%.
Even though it isnt what you exactly want its still pretty much fine, as it draws pretty low current, it was something around 30mA when i measured it quite some time ago.
 
Being powered by the device when plugged in is a feature which spares battery cycles and prolongs the battery longevity.
Thanks for the clarification, that makes sense!
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CedarX Member 31 posts
CedarX
What you want exactly, cant be done with this device.
When you disable charging it wont charge the battery but will still be powered by the phone. In this scenario, if battery is at 100% when you plug it to the phone, it will remain at 100%. But if its at 50% then it shouldnt increase gradually to 100%.
Even though it isnt what you exactly want its still pretty much fine, as it draws pretty low current, it was something around 30mA when i measured it quite some time ago.
 
Being powered by the device when plugged in is a feature which spares battery cycles and prolongs the battery longevity.
Are you sure?  When you disable charging, the 5K is powered  by its own battery.  It will resume charging (from the phone) when the battery is down to ~20% charge.  I think that’s pretty close to what the OP wants…
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DeJaVu Senior Member 122 posts
DeJaVu
Are you sure?  When you disable charging, the 5K is powered  by its own battery.  It will resume charging (from the phone) when the battery is down to ~20% charge.  I think that’s pretty close to what the OP wants…
I mean if youve ever tried it you would know it doesnt work that way, put aside the fact i mentioned i measured it drawing current from the device its plugged into when charging is disabled...
Or put aside the fact that its described in the manual...
When plugged in its always powered by the device its plugged into, never by the battery, only optional thing is battery being charged or not.
 
It was a selling point, which made it much more suited for combined wireless/wired use than the alternatives available at the time(Fiio BTR3K, Hiby W3 etc.), basically sparing the battery cycles for when you really need it, in wireless mode. The alternatives mentioned above would do exactly what you describe if you disable charging.
 
But the 20% part might be true for the Q5K too(at least its logical), charging even if charging is disabled if battery is at 20% or lower. They could have implemented that as a safeguard so your battery doesnt get overdischarged and be ready for long enough runtime in wireless mode when you unplug.
Dont remember trying this out.
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