> For the complete documentation index, see [llms.txt](https://help.sbtinstruments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sbtinstruments.com/troubleshooting/other-problems/the-clock-is-wrong.md).

# The clock is wrong

The time is wrong, or your BactoBox® forgets it.

## Your BactoBox® forgets the time and date

You set the time and date, but your BactoBox® forgets them when you switch it off. The internal clock battery has run flat.

{% stepper %}
{% step %}

#### Charge the clock battery

[Power on](/getting-started/installation/power-on.md) your BactoBox® and leave it on for **24 hours**. The battery charges while it is on.
{% endstep %}

{% step %}

#### Set the time and date

[Set the time and date](/software/dash/menu-system.md#time-and-date). Your BactoBox® now keeps them after a restart.
{% endstep %}
{% endstepper %}

{% hint style="info" %}

### The battery lasts 2 months without power

Switch your BactoBox® on regularly to keep it charged. The rocker switch must be in the *On* position. A plugged-in cable alone is not enough.
{% endhint %}

## The clock shows the wrong time

First set the time zone. Then set the time and date. Both are under [Time and date](/software/dash/menu-system.md#time-and-date).

{% hint style="info" %}

### The clock drifts up to 10–15 minutes per month

This is normal. Set the time and date again when it has drifted too far. If you use [Access](/software/not-in-the-new-structure/access.md), it sets the clock for you.
{% endhint %}


---

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