# Page Not Found

The URL `hardware-and-maintenance/maintenance/t35-x-battery-replacement` does not exist.

You might be looking for one of these pages:
- [T35 Battery Replacement (before Oct 2022)](https://help.waterwatch.io/3.0.1/hardware-and-maintenance/maintenance/t35-battery-replacement-before-oct-2022.md)
- [LS1R Battery Replacement (before Oct 2022)](https://help.waterwatch.io/3.0.1/hardware-and-maintenance/maintenance/ls1r-battery-replacement-before-oct-2022.md)
- [Maintaining Your Sensor](https://help.waterwatch.io/3.0.1/hardware-and-maintenance/maintenance.md)
- [Upgrade T35 to T35-X](https://help.waterwatch.io/3.0.1/hardware-and-maintenance/maintenance/upgrade-t35-to-t35-x.md)
- [Upgrade LS1 to LS1R X](https://help.waterwatch.io/3.0.1/hardware-and-maintenance/maintenance/upgrade-ls1-to-ls1r-x.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://help.waterwatch.io/3.0.1/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://help.waterwatch.io/3.0.1/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/3.0.1/hardware-and-maintenance/maintenance/t35-battery-replacement-before-oct-2022.md`)
- Use `Accept: text/markdown` header for content negotiation