After-sales service and Limited warranty letters

This limited warranty (hereinafter Warranty”) specified below applies to Battery Energy Storage system and the accessory Components (hereinafter “Products”) supplied by Jiangsu Daqin New Energy Tech Co., Ltd. (hereinafter or “Dyness”) to End User through Authorized Seller (hereinafter or “Seller”).

End User Definition
End User (hereinafter “Buyer”) is the buyer who puts the Products into operation for the first time via the way authorized by Dyness.

Authorized Seller
Authorized Seller is the Agents, Distributors, Partners, etc. authorized by Dyness.
1. Purpose

• The primary purpose of Limited warranty letters part is to clearly define the matters related to warranty policy of Products.
• The primary purpose of After-sales service part is to clearly define the matters related to precautions for use of Products.

2. Applicable product type
Dyness Battery Energy Storage system:

• Dyness Battery Module Unit:
• Applicable product types:
• Tower T7 ESS unit/ Tower T10 ESS unit/ Tower T14 ESS unit / Tower T17 ESS unit /
• Tower T21 ESS unit

Dyness warrants to the End User as follows:
3. Product Warranty
1.1 Warranty start date definition

• The initial date of the warranty shall be the date the Seller’s invoice to the End User.
• The warranty period for Products will remain unchanged after the warranty is completed within the warranty period.

1.2 Warranty Period

• The Products warranty period is seven (7) years from the sales date as mentioned in the Seller’s invoice to the End User (“Invoice Date”). If the customer registers on the Dyness official website: http://www.dyness-tech.com.cn/sign.html, and obtains Dyness’s official approval, the product warranty period can be extended to ten years.
• This Warranty covers a capacity equivalent to 1 full cycle per day.
• Full cycle: Discharge the usable capacity of a fully charged battery and fully charge it afterwards. Micro cycles sum up to full cycles according to amount of energy charged and discharged.
• Note. Products are unavailable to protect itself from the deep discharge/charging in condition of without communication connection.
• The Products without communication connection warranty period is 5 (five) years from the sales date as mentioned in the Seller’s invoice to the End User (“Invoice Date”).
• Regarding self-discharging degradation, 180 days after ex-work is ensured.

4. PerformanceWarranty (standard)

1. 4.1Capacity performancewarranty
   1. Dyness warrants that the Products retains sixty percent (60%) of the Usable Energy for ten (10) years from the Invoice Date. Or for a Minimum Through Output Energy which is calculated from the Invoice Date, whichever comes first.
   2. The term “Usable Energy” herein means the initially Usable Energy of the products as printed on the label of Products. The precondition of the valid 10year Performance Warranty shall be followed as the Products should be used in accordance with Appendix 1 – Usage and Transportation requirements.
   3. Product Type | Usable Energy (kWh) | Minimum Energy Throughput (MWh)
      Tower T7 ESS unit |7.10 |20.73
      Tower T10 ESS unit |10.66 |32.82
      Tower T13 ESS unit |14.20 |41.46
      Tower T17 ESS unit |17.76 |51.86
      Tower T21 ESS unit |21.31 |62.22
2. 4.2Capacity measurement condition
   1. Ambient temperature: 25~30oC
   2. Initial battery temperature from BMS: 25~30 oC
   3. Charging/discharging method
      Product Type Charge: | Discharge: | Current at
      Tower T10 | (0.2) CC/CV (Constant voltage: (328.5) V/ Cut-off current (0.05) C) | (0.2)CC (Cut-off voltage: (252)V) (0.2)C
      Tower T13 | (0.2) CC/CV (Constant voltage: (438) V/ Cut-off current (0.05) C) | (0.2)CC (Cut-off voltage: (336)V) (0.2)C
      Tower T17 | (0.2) CC/CV (Constant voltage: (547.5) V/ Cut-off current (0.05) C) | (0.2)CC (Cut-off voltage: (420)V) (0.2)C
      Tower T20 | (0.2) CC/CV (Constant voltage: (657) V/ Cut-off current (0.05) C) | (0.2)CC (Cut-off voltage: (504)V) (0.2)C
      Note. Current and voltage measurement at battery DC side

5. Exclusion of Warranty
Damage to the Products resulting from any of following activities is not covered by this
Limited Warranty:

1. Without payment to the Seller, the Buyer may pay the unpaid amount to the Seller in support of the warranty claim under the circumstances that the Seller has the right to refuse the warranty request in accordance with this clause.
2. Not complying with Dyness’s official user manual of the product and “Appendix 1 – Usage and Transportation requirements”.
3. Product damage caused by modification, alteration, disassembly, repair or replace maintenance and other services conducted by personnel unauthorized by Dyness.
4. Damage or defect arise due to the buyer’s unauthorized use of his own design, materials, mixed, function changed or service to the Products.
5. Product damage and defect caused by buyer’s improper use, mixed-use, misuse, abuse, which non-conforming with User Manual.
6. Appearance damage, deformation, abrasion, stain, rust, mildew, or similar external influences caused by the buyer during use.
7. Improper transportation, storage, installation, wiring and use with faulty or incompatible devices by Buyer. If Buyer fails to use the original packaging materials provided by Seller during the transportation of the equipment, the Products damage or failure shall not fall under the warranty scope of the product.
8. The model number, nameplate or product serial number of the product has been altered, erased or unrecognizable or the tamper-evident logo has been arbitrarily damaged.
9. Products suffered any external influences including unusual physical, natural force, electrical stress (power failure surges, inrush current, lightning, flood, fire, accidental breakage, etc.)
10. Product damage caused by external force, force majeure (causes of natural disasters such as unforeseeable, unavoidable and insurmountable objective events, including but not limited to war, civil war, strike, riot or other activities intervened by government, terrorism, war,riots,strikes, unavailability of suitable and sufficient labor or materials and other events which are out of control of Dyness) or other third party.
11. Damage of Products arise due to renewal of the national or regional laws or regulations.
12. Product damage and defect caused by End User deliberately or by willful act.
13. Use of an incompatible inverter, rectifier or PCS.
14. Products failure is not reported to Seller or Dyness Authorized Service Partner within 2 weeks of appearance.
15. Purchase and installation of the Product in an area other than the Europe.
16. Warranty period specified above has already expired.

6. About Service Products/Parts
6.1 Fault Handling

1. If the product fails, the Buyer shall cooperate with the Seller to obtain thefaulty equipment usage information, including but not limited to: faulty equipment serial number, working temperature, usage mode, supporting energy storage inverter manufacturer/model/specification, power consumption equipment power information, PV system configuration information, fault phenomena, operating procedures, battery operation logs, etc.
2. When both parties agree that the product belongs to the warranty scope, Buyer can use spare parts to replace the fault equipment, before using of spare parts to the Buyer shall confirm with the Seller in writing and provide the serial number of the failure equipment and the serial number of the spare parts to be installed in time.
3. After both parties have jointly agreed that the product belongs to the warranty scope, Buyer may replace the faulty components with the spare parts. Before replacing the faulty components with the spare parts, the Buyer shall confirm with the Seller in writing and provide the serial number of the failure equipment and the serial number of the spare parts to be installed in time.
4. If the two parties disagree with whether the faulty equipment meets the warranty conditions, the products may be tested jointly by the ways approved by both parties, or the products shall be submitted to the third-party testing institutions recognized by both parties. Both parties can provide reasonable opinions on the test methods, basis and conclusions. The testing fee shall be borne by the Buyer first. If the testing result proves that the product meets the warranty conditions, the Seller shall pay the transportation fee and testing fee generated in full to the Buyer, and assume the responsibility for the faulty equipment warranty.

7. Claim payment policy
Dyness reserves the right to refuse product warranty claim for lacking proper documentation and information.
Claims under this Warranty must be made by notifying the Seller from whom Products was purchased within 2 weeks of appearance.
For a Warranty Claim to be processed, it must include but not limited following items:

1. (1) Proof of the original
2. (2) Description of the alleged defect(s) from authorized service center
3. (3) The relevant Product’s serial number and the initial date of the warranty

Buyers who are unable to contact the Seller from whom Product was purchased should contact Jiangsu Daqin New Energy Tech Co., Ltd at the Contact us Section of the
Website：

• http://www.dyness-tech.com.cn
• Email: sales@dyness-tech.com
• Fax: 029 8954 0338

If data cannot be supplied for these specific applications warranty will be void.

IN ORDER TO CLAIM AND REGISTER FOR THE WARRANTY PROCESS PLEASE LOG YOUR WARRANTY THROUGH OUR RMA:

Click the Image below to start your warranty process:

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