Manufacturer of graphene supercapacitor batteries

How long is the warranty period of graphene capacitor?
Graphene capacitor warranty starts on the day of purchase and runs for certain time. If it is defective during the warranty period, we will repair or replace it free of charge. For in-warranty repairs, contact our Customer Service to learn the specific steps. We will do our best to solve your problems. All implied warranties on the product are limited to the duration of this expressed Warranty. Some states do not allow limitation on how long an implied Warranty lasts, so the above limitations may not apply to you.
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Shanghai Green Tech Co.,Ltd. is a professional manufacturer and provider of graphene supercapacitor for sale. We pride ourselves in rich experience and strong expertise in this field. The graphene battery series has become a hot product of Shanghai Green Tech. It abides by the testing requirements during the production. Shanghai Green Tech utilizes its talents, technology and fund to provide top ranking service for its customers.

We have a clear long-term strategy. We want to become more customer-focused, more innovative, and more agile in our internal processes and customer-facing activities.

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