Cookie Policy

1. What are cookies?

Cookies are small text files stored on your device when you visit our website (welionbattery.eu, welion.de). They allow the website to remember your preferences, analyze performance, and improve your experience.

2. Cookie categories we use

2.1 Essential cookies (always on)

These cookies are strictly necessary for the website to function properly. They cannot be disabled.

• welion_lang – stores your selected language (1 year)
• welion_geo – stores IP-detected language for performance (7 days)
• welion_cookie_consent – stores your GDPR cookie preferences (13 months)

2.2 Functional cookies (optional)

These cookies remember your settings (e.g., display preferences) to provide a smoother browsing experience.

2.3 Analytics cookies (optional, opt-in only)

We use Google Analytics 4 and Google Tag Manager to collect anonymous usage statistics. They load only after you consent via our cookie banner.

• welion.de: GA4 ID G-SJ33Q2SN6Z, GTM GTM-MG552D4M
• welionbattery.eu: GA4 ID G-2ND1SPCB98, GTM GTM-WCJMJTRT
• IP anonymization on · no personal data · GDPR compliant · 26-month retention

2.4 Marketing cookies

We do not currently use marketing or advertising cookies. If this changes, we will request your explicit consent first.

3. Managing your cookie preferences

You can change your cookie settings at any time:

• Via the cookie banner that appears on your first visit
• Using the "Manage cookie settings" link at the top of this page
• Through your browser's privacy settings (Chrome, Firefox, Safari, Edge)
• Using the Google Analytics Opt-out Browser Add-on

4. Retention periods

5. Third-party services

• Google Privacy Policy – for GA4 and GTM
• Google Cookie Policy

6. Contact

If you have any questions about this Cookie Policy, please contact us:

• Email: miklos.zsom@welion-solidbattery.com
• Phone: +36 30 501 7514

This Cookie Policy applies to welionbattery.eu and welion.de. For full data processing information, see our Privacy Policy.