> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.onlycat.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How is OnlyCat powered?

OnlyCat is designed to be a mains-powered device for reliable, continuous operation.

It can run from a large battery pack, but keep in mind:

* A \~20,000 mAh battery typically lasts 24-36 hours.
* Batteries would likely need replacing or recharging every couple of days.

Most of our customers find that, after the one-off effort of running a power cable, it’s easier and more convenient than constantly swapping batteries.

The power is connected to the underside of the device:

![](https://storage.crisp.chat/users/helpdesk/website/-/9/d/9/a/9d9a00682326c00/dsc07043-2gpuyny_1teqxoj.jpg =500x333)
**Backup Battery**
There is a small internal backup battery to handle short power interruptions and change the device state on external power loss for safe shutdown. The power-loss lock/unlock behaviour is configurable through the app. The battery can usually last around 20 minutes; this is an approximate typical duration, not a guaranteed runtime.

**How Can I Install OnlyCat and Manage the Power Cable in doors?**

There are several ways to handle this depending on your preference for a quick setup or a more polished finish.

**Quick Temporary Fix:**
Some customers temporarily secure the cable with hot glue, which takes just a few minutes:

![](https://storage.crisp.chat/users/helpdesk/website/-/9/d/9/a/9d9a00682326c00/onlycat-temporary_on47vj.png)

**Refined Installation:**
For a cleaner look, you can use epoxy or silicone to create a uniform bead around the cable, clip the wire around the skirting board using cable clips, or use cable trunking.

**Customer Examples:**
* [Video example of a typical installation](https://www.youtube.com/shorts/cuyNduEmgrg?app=desktop\&cbrd=1\&fbclid=IwY2xjawFY77RleHRuA2FlbQIxMAABHZjpImPW97PGkW7WBiRuqv_X3oVPsrHQZs3aJ4es47RmVwszpctetPu8Uw_aem_OYXzu993DU5dqUCdKQqOjA)
* Refined installation examples:

![](https://storage.crisp.chat/users/helpdesk/website/-/9/d/9/a/9d9a00682326c00/onlycat-door-installation-1_1iz705q.jpg)
![](https://storage.crisp.chat/users/helpdesk/website/-/9/d/9/a/9d9a00682326c00/onlycat-door-installation-2_mrcczq.png)

**Other Options:**
There are also specialised hinges available that can fully conceal the power cable for a sleek look.