> For the complete documentation index, see [llms.txt](https://qudelix.gitbook.io/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://qudelix.gitbook.io/home/5k/power-management/battery.md).

# Battery

### 500mA Li-Polymer Battery

The 5K is equipped with a built-in 500mAh battery.\
Manufacturer: VDL (<http://www.gdvdl.com/>)

***

### Status Display

The app allows you to check the current battery status and charging state. The Battery Log Graph displayed in the app shows usage time and consumption.

<figure><img src="/files/iAHP7yfal2UbXtPunYhu" alt=""><figcaption><p>Qudelix-5K Battery Status</p></figcaption></figure>

{% hint style="info" %}
\*The battery voltage display is for reference only.
{% endhint %}

***

### Battery Time

<figure><img src="/files/WU7CZYOhzrjbKbJDxhyl" alt=""><figcaption><p>AAC 44.1KHz</p></figcaption></figure>

<figure><img src="/files/e9gLw573ptMzWVmJ0RR1" alt=""><figcaption><p>LDAC 44.1KHz @ 909Kbps</p></figcaption></figure>

<figure><img src="/files/ujI4DyBX1uLhtn9CS7Qf" alt=""><figcaption><p>LDAC 96KHz @ 990Kbps</p></figcaption></figure>

{% hint style="success" %} <mark style="color:red;">Battery time may vary depending on the codec, sample rate, power, output mode, the sensitivity of the connected earphones/headphones, and the volume level.</mark>
{% endhint %}

***

### Battery Management

When a PC or charger is connected via USB power, the 5K does not use battery power but instead directly uses USB power to operate the system. When used as a USB DAC, the device does not use the battery but relies on USB power, which helps preserve battery life, ensures a fixed charging time, and provides lower heat generation.

{% hint style="info" %}
Some products from other manufacturers may use the battery even while charging, causing both charging and discharging to occur simultaneously. This can lead to overheating, a longer charge time, and reduced battery lifespan. Please keep this in mind.
{% endhint %}

***

### SAFETY WARNING

{% hint style="danger" %}
Always remember that heat is the greatest enemy of LiPo batteries.&#x20;

The hotter the battery, the shorter its lifespan. Do not place the battery in high-temperature environments. Specifically, when using the 5K with a car's Aux-In, do not leave it inside the car. When parked under the sun, the interior temperature can rise significantly, reaching nearly 120-160°F (49-71°C). This can not only shorten the battery lifespan but also expose it to a serious fire risk.&#x20;

Rechargeable lithium polymer batteries can be hazardous if misused, leading to serious fire hazards, severe injuries, and property damage.
{% endhint %}

<figure><img src="/files/msegOpYNRD7o5bfRPyth" alt=""><figcaption></figcaption></figure>