Returns, Warranties, and Claims Policy

Last updated: May 2026

This policy applies exclusively to purchases made by business customers (Unternehmer within the meaning of § 14 BGB) from Dan-Tech Energy GmbH. Purchases by consumers (Verbraucher within the meaning of § 13 BGB) are not permitted on this platform.

1. Scope

Dan-Tech Energy GmbH ("Dan-Tech", "we", "us") sells lithium battery systems and related products exclusively to registered business customers. This policy governs all warranty claims, returns, and defect notifications for products purchased through shop.danenergy.com.

2. Statutory Warranty (Gewährleistung)

The statutory warranty period for business customers under German law is twelve (12) months from the date of delivery, pursuant to §§ 437 et seq. BGB in conjunction with § 477 BGB as applicable to commercial transactions.

Warranty claims are limited to defects that existed at the time of delivery. We warrant that goods conform to the agreed specifications and are free from material defects at the time of transfer of risk.

3. Mandatory Inspection and Notification Duty (§ 377 HGB)

As a business customer, you are obligated under § 377 HGB (German Commercial Code) to inspect delivered goods immediately upon receipt and to notify us of any defects without undue delay.

• Visible defects: Must be reported in writing within five (5) business days of delivery.
• Hidden defects: Must be reported in writing immediately upon discovery, but no later than five (5) business days after discovery.
• Failure to notify: If you fail to comply with this inspection and notification obligation, the goods are deemed accepted and all warranty claims arising from the defect are forfeited.

All defect notifications must be submitted to info@danenergy.com with photographic evidence and the order number.

4. Warranty Exclusions

Warranty claims are excluded for defects or damage caused by:

• Improper installation, operation, or maintenance outside the specifications provided in the product documentation;
• Unauthorized modifications, repairs, or alterations to the product;
• Failure to observe applicable storage conditions (temperature, humidity, state of charge as specified in the product datasheet);
• Physical damage, impact, water ingress, or environmental exposure beyond rated specifications;
• Use of incompatible charging equipment or chargers not approved by Dan-Tech;
• Normal wear and tear, capacity degradation within the specified cycle life, or consumable components;
• Damage caused by connection to electrical systems with incorrect voltage or polarity.

5. Return Merchandise Authorization (RMA) Process

All returns require prior written authorization. Do not return goods without an RMA number — unauthorized returns will not be processed.

1. Submit a warranty claim or return request to info@danenergy.com including: order number, product SKU, description of the defect or reason for return, and photographic evidence.
2. We will assess your claim and respond within five (5) business days.
3. If the return is approved, we will issue an RMA number and return shipping instructions.
4. Goods must be returned in their original packaging or equivalent protective packaging, with all accessories included, within fourteen (14) calendar days of receiving the RMA number.
5. Upon receipt and inspection of returned goods, we will repair, replace, or issue a credit note at our discretion, in accordance with applicable law.

6. Special Return Procedure for Battery Products (UN 3480 / ADR)

Lithium battery products are classified as dangerous goods under UN 3480 and are subject to transport regulations including ADR (road), IATA DGR (air), and IMDG (sea). You must comply with the following before returning any battery product:

• Discharge the battery to below 30% state of charge (SoC) before packaging;
• Use the original packaging or UN-certified packaging provided with the RMA authorization;
• Affix all required dangerous goods labels (Class 9 label and lithium battery handling mark);
• Include a completed dangerous goods declaration as required by the carrier;
• Ship only via carriers authorized for UN 3480 transport.

Do not return damaged, swollen, leaking, or thermally compromised batteries by standard courier. Contact us at info@danenergy.com for special handling instructions in such cases.

Failure to comply with dangerous goods regulations may result in shipment refusal, additional carrier costs charged back to you, and legal liability for the shipper.

7. No Withdrawal Right in B2B Transactions

As this platform operates exclusively with business customers, the statutory right of withdrawal (Widerrufsrecht) under §§ 355 et seq. BGB does not apply. The 14-day withdrawal right is a consumer protection measure under § 13 BGB that applies only to consumers in distance selling transactions. No such right exists in business-to-business commercial transactions.

8. Retention of Title (Erweiterter Eigentumsvorbehalt)

All delivered goods remain the property of Dan-Tech Energy GmbH until full payment of the purchase price and all ancillary charges has been received in cleared funds.

Extended retention: If delivered goods are processed, combined, or mixed with other items before full payment, Dan-Tech acquires co-ownership of the resulting product in proportion to the invoice value of the delivered goods at the time of processing.

Assignment of resale claims: You hereby assign to Dan-Tech all claims arising from the resale of goods subject to retention of title, up to the invoice value of the relevant goods. You are authorized to collect these claims in the ordinary course of business, provided you are not in default of payment obligations to us.

Third-party seizure: You must inform Dan-Tech immediately in writing if third parties (e.g., enforcement authorities or insolvency administrators) attempt to seize or otherwise access goods subject to retention of title. You bear all costs of any necessary intervention by Dan-Tech to protect its ownership rights.

9. Product Liability (ProdHaftG)

Nothing in this policy limits or excludes Dan-Tech's liability under the German Product Liability Act (Produkthaftungsgesetz, ProdHaftG) for personal injury or property damage caused by defective products. Such liability is mandatory under statute and cannot be excluded or limited by contractual agreement.

10. Limitation of Liability for Warranty Remedies

In B2B transactions, our liability for warranty claims is limited to repair or replacement of the defective goods, or — at our election — a credit note or refund of the purchase price. Liability for consequential damages, loss of profit, or indirect losses arising from defective goods is excluded to the extent permitted by applicable law, except in cases of intent (Vorsatz), gross negligence (grobe Fahrlässigkeit), or injury to life, body, or health.

11. Contact

For all warranty claims, return requests, and technical support:

Dan-Tech Energy GmbH
Email: info@danenergy.com
Website: www.danenergy.com