Privacy Policy
Last updated: February 2026
Our Commitment
We respect your privacy. No personal data is sold. All battery sizing calculations are performed locally in your browser — we do not store your inputs on our servers.
Data Collection
If you choose to submit your email address to receive a PDF Blueprint, that email is stored locally in your browser only. We do not transmit it to any server. No account is created and no password is required.
Analytics (Google Analytics 4)
We use Google Analytics 4 (GA4) to understand how visitors use our site. GA4 collects anonymous usage data including page views, session duration, and navigation paths. We have enabled IP anonymisation on all GA4 data. We do not transmit personally identifiable information to Google Analytics. You can opt out by using the Google Analytics Opt-out Browser Add-on.
Advertising & Cookies (Google AdSense)
We use Google AdSense to display advertisements. Google AdSense may use cookies to serve ads based on your prior visits to this or other websites. Cookie categories used on this site:
- Necessary cookies: Essential for site functionality. Cannot be disabled.
- Analytics cookies: Google Analytics 4 — anonymous usage statistics.
- Advertising cookies: Google AdSense — personalised ad targeting.
Opt out of personalised advertising at Google's Ads Settings.
Your Rights (UK GDPR / GDPR)
If you are in the UK or European Economic Area, you have rights under UK GDPR and GDPR:
- Right of access: Request a copy of any personal data we hold.
- Right to erasure: Request deletion of your personal data.
- Right to rectification: Request correction of inaccurate data.
- Right to object: Object to processing for marketing or analytics.
- Right to data portability: Receive your data in a portable format.
To exercise any of these rights, email support@batteryblueprint.com. You may also complain to the Information Commissioner's Office (ICO).
Data Retention
Calculator inputs are processed locally in your browser and are not stored on our servers. Google Analytics data is retained for 14 months under GA4 default settings. Google AdSense data is subject to Google's own retention policies.
Third Parties
We do not sell or rent your data to third parties. We use Google Analytics (analytics) and Google AdSense (advertising), both of which operate under their own privacy policies and may transfer data internationally in compliance with applicable data protection law.
Contact
For privacy-related questions, email us at support@batteryblueprint.com. We respond within 2 business days.