# Maintenance and Troubleshooting

{% content-ref url="maintenance-and-troubleshooting/battery-replacement" %}
[battery-replacement](https://beatwell-guide.kardi.ai/en/maintenance-and-troubleshooting/battery-replacement)
{% endcontent-ref %}

{% content-ref url="maintenance-and-troubleshooting/chest-strap-maintenance" %}
[chest-strap-maintenance](https://beatwell-guide.kardi.ai/en/maintenance-and-troubleshooting/chest-strap-maintenance)
{% endcontent-ref %}

{% content-ref url="<https://github.com/kardiai/gitbook/blob/localized/beatwell-guide/en/maintenance-and-troubleshooting/changing-the-kardi-ai-app-language.md>" %}
<https://github.com/kardiai/gitbook/blob/localized/beatwell-guide/en/maintenance-and-troubleshooting/changing-the-kardi-ai-app-language.md>
{% endcontent-ref %}

{% content-ref url="maintenance-and-troubleshooting/sending-application-logs" %}
[sending-application-logs](https://beatwell-guide.kardi.ai/en/maintenance-and-troubleshooting/sending-application-logs)
{% endcontent-ref %}

{% content-ref url="<https://github.com/kardiai/gitbook/blob/localized/beatwell-guide/en/maintenance-and-troubleshooting/restart-kardiai.md>" %}
<https://github.com/kardiai/gitbook/blob/localized/beatwell-guide/en/maintenance-and-troubleshooting/restart-kardiai.md>
{% endcontent-ref %}

***

{% hint style="success" %}
**Need help?**\
Contact Kardi Ai customer support\ <img src="https://2082282683-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAVhCdwVmLrs5nIQtgp8Q%2Fuploads%2Fgit-blob-73350b6a34f4c853352cd1f9d4f4c1f0c0c9eb4c%2Fmail_grey.png?alt=media" alt="" data-size="line"> [**support@kardi.ai**](mailto:support@kardi.ai)
{% endhint %}