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Warranty & Return
ECC BATTERY warrants that, subject to the exclusions and limitations set out below, the ECC BATTERY Series of battery system come with a warranty which includes:
1.      5 years of product warranty: ECC BATTERY warrants that the hardware of electronics and enclosure (including battery cover, micro circuit breaker, BMS PCBA) will be free of defects caused by improper workmanship or defective materials and it will be starting from the original end user purchase date, if the customer is unable to provide adequate documentation of the original purchase, the warranty start date shall be 6 months after the product was manufactured.
2.     10 years of performance warranty: ECC BATTERY warrants that the battery system retains either seventy percent (70%) of Usable Energy for ten (10) years, or for a Minimum Through Output Energy which is calculated from the earlier one of installation date or 6 months after battery system production date, whichever comes first.
PRECONDITIONS FOR WARRANTY
1.     The defect of the battery system shall occur within the battery system warranty period as determined above.
2.     Any battery system failure, fault or warning which leads to system not working or working abnormally, must be reported by following the terms described in ‘HOW TO MAKE A CLAIM UNDER THE ECC BATTERY LIMITED WARRANTY’ within two weeks of appearance. 
3.     The battery system shall be installed by a skilled person or 3rd party installer. 
4.     End User shall correctly operate and use the battery system according to the User Manual and Installation Guide. 
5.     End User shall provide the proof of the original purchase of the battery system. 
6.     The installation of the Battery system for the End User shall be completed within maximum 6 months from the production date. 
7.     The charging temperature of the battery system must NOT exceed 0℃~50℃ and the discharging temperature of battery system must NOT exceed -20℃~50℃, and shall not be exposed in an installed area to direct sunlight. The Battery system installation location must be ventilated in accordance with the requirements of User Manual and Installation Guide. 
8.     This Warranty covers a capacity equivalent to one full cycle per day. The Battery system is not suitable for supplying life-sustaining medical devices or automotive application. 
9.     The battery system shall be installed with ECC BATTERY brand inverter. If you want to use any other brand inverter, please check with ECC BATTERY to make sure it’s compatible in advance. 10. It is required that all Battery Systems have internet connection for monitoring. For those Battery Systems that failed to meet this condition, ECC BATTERY Limited Warranty for Battery System may become null and void.
HOW TO MAKE A CLAIM UNDER THE ECC BATTERY WARRANTY
If the claimant wants to make a warranty claim, please contact your local distributor where you purchased the battery system from, or the installer who installed the inverter for you. If the claimant was unable to obtain service from them, or was NOT satisfied with their service, the claimant can escalate your service request by creating a service ticket and make a claim to ECC BATTERY via Please note, in order to deliver a friendly and timely service, ECC BATTERY is cooperating with many of our distributors and installers all over the world. As such, please treat them as the default service channel of ECC BATTERY and use these service channels to make your warranty claim; ECC BATTERY will support and audit our service channel to ensure that we deliver a good service to our customers. 
Please have the following information to hand as it may be required when contacting the local distributor. 
1.     Contact information of claimant, including name of the person, name of the company, phone number, email address and shipment address. 
2.     Information regarding all defective battery system, including model No., serial number, installation date and failure date. Please make the claim within one month from the failure date, otherwise ECC BATTERY will treat it as you have abandoned the right to make a warranty claim. 
3.     Installation information, including brand, model, and number of PV panels. 
4.     Error message on APP screen (if applicable) and additional information regarding the fault/error. 
5.     Description of actions before the failure and detailed information of previous claims (if applicable). ECC BATTERY may arrange an on-site inspection to find out the root of the faults. The claimant is responsible for granting access, making time, and ensuring the safety of the inspection by a technician from ECC BATTERY or an authorized third party company. ECC BATTERY reserves the right not to enter the site should the ECC BATTERY technician consider it unsafe to do so.