Everything you need to know about our Tesla battery health check service
We use Tesla's official OAuth system, which means you authenticate directly with Tesla - we never see your username or password. We only access basic vehicle information and battery data that Tesla allows third-party apps to read. We cannot access your personal information, payment details, or any other Tesla account data.
We only collect battery-related data: current battery level, usable battery capacity, estimated range, and vehicle specifications (model, year, VIN). We do not access your location, driving history, personal settings, or any other vehicle data. Our analysis focuses solely on battery health and degradation.
Absolutely not. We never see, store, or have access to your Tesla username, password, or any login credentials. The OAuth process happens entirely between you and Tesla. We only receive a temporary access token that we use to read your battery data, and this token expires automatically.
We keep your battery assessment data only as long as necessary to provide the service. If you purchase a certificate, we retain the certificate data for verification purposes. You can request deletion of your data at any time by contacting us. We do not sell, rent, or share your personal data with third parties.
No, we do not sell, rent, or share your personal data with third parties. The only exceptions are: 1) Payment processing (Stripe) for certificate purchases, 2) Legal requirements if compelled by law, 3) Service providers who help us operate our platform (under strict confidentiality agreements).
The battery health check is completely free because we want to help Tesla owners understand their vehicle's condition. We charge for certificates because they require additional costs: Tesla API usage fees, certificate generation, secure storage, and verification systems. Plus, a paid certificate shows buyers that you're serious about transparency and increases your vehicle's value.
Tesla charges fees for API access to their vehicle data. While individual battery checks are relatively inexpensive, providing a verified certificate service requires ongoing API access for verification, which incurs monthly costs. Our $10 certificate fee helps cover these operational costs while keeping the service accessible.
A verified battery certificate proves to potential buyers that your Tesla's battery is in good condition, eliminating uncertainty about hidden degradation. This transparency builds trust and can justify a higher asking price. Buyers are willing to pay more for vehicles with proven battery health, as it reduces their risk of expensive battery replacement costs.
Yes, the $10 certificate fee is a one-time payment. You get a verified certificate that's valid for 3 months and can be shared with unlimited potential buyers. There are no recurring fees, subscriptions, or hidden costs. If you need a new certificate after 3 months, you can purchase another one.
We offer a 30-day money-back guarantee for all certificate purchases. If you're not satisfied with your certificate for any reason, contact us within 30 days and we'll provide a full refund. However, please note that once a certificate is verified by a buyer, we cannot issue refunds as the service has been used.
Our system connects to your Tesla via the official Tesla API and analyzes your battery data in real-time. We compare your current battery capacity against the original specifications for your vehicle model and year, then calculate the degradation percentage. The assessment takes about 30 seconds and provides instant results.
Our assessment is highly accurate because we use Tesla's own API data, which is the same data Tesla uses internally. We compare your battery against manufacturer specifications and real-world benchmarks. However, battery health can vary based on usage patterns, so we recommend using this as one tool in your overall vehicle evaluation.
Certificates are valid for 3 months from the date of purchase. This timeframe ensures the data remains current while giving you enough time to complete a sale. Battery health doesn't change significantly in 3 months, so the assessment remains relevant for most transactions.
Each certificate includes a unique QR code that buyers can scan to verify authenticity on our website. The verification page shows the certificate details and confirms it was issued by batterycert.com. This prevents fraud and ensures buyers can trust the battery health data.
We provide comprehensive support for all our services. If you encounter any technical issues, have questions about your battery assessment, or need help with your certificate, you can contact us through our support channels. We typically respond within 24 hours and are committed to ensuring you have a positive experience with our service.
We're here to help! If you have any questions about our service, privacy, or need technical support, don't hesitate to reach out.