Welcome to Dyness Support

No, our batteries are deep-cycle batteries designed to provide stable, long-term current output, and they come with a built-in BMS. They cannot deliver high current in a short time.

It takes us 1-2 business days to process your order. We ship from local warehouses, and delivery usually takes 3-7 days after placing the order.

Yes! Just enter your email in the sign up form at the bottom of this page, and you’ll be added to our subscription list. You’ll be sent updates, exclusive offers, and much more.

If you want to return an item because of personal reasons (such as unsuitable size), we usually do not cover the cost of the return, but if the item has quality problems, please contact our customer service and we will solve the problem as soon as possible.

We always aim for make sure our customers love our products, but if you do need to return an order, we’re happy to help. Just email us directly and we’ll take you through the process.

Orders containing multiple products will be shipped separately. If your order has not arrived after a long period, please contact us.

We use all major carriers（FedEx/USPS/Amazon Logistics）, and local courier partners. You’ll be asked to select a delivery method during checkout.