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Thank you for your interest in the products and services of BASEN. By acquiring the products of BASEN, you have purchased high quality.


We grant the following warranties for our products.


We offer a warranty against poor performance when used correctly in accordance with the instructions in the product manual.


12V/24V: 5 years warranty

48V: 10 years warranty

48V DIY case: 5 years warranty

Charger: 2 years warranty

The warranty is in effect from the date of purchase by the user (the “Purchaser”).

Please read the product manual carefully before installing and using the product, and use the battery correctly under the instructions in the manual.

Emergency Treatment

1.If the leakage of electrolyte happens, and the electrolyte enters into eyes, rinsing them out with clear water and get a treatment in the hospital immediately instead of rubbing eyes, or the eyes may get hurt;

2.During the usage and storage process, if any peculiar smell, heat, color changing and deformation or any other abnormal occur to the battery, please cut off the power immediately. If the cell surface has got high temperature, please remove it from the device or charger after it gets cool;

3.Explosion will not occur under extreme conditions, but the battery may smoke, for this situation the cell should be isolated from air by any measures except using water, such as covering with sand, or using carbon dioxide fire extinguisher, dry powder fire extinguisher. The cell should be treated after smoke dispersing.


DIY battery pack must get the cells balanced (same voltage ) before assembly. Later if there happens don’t know how to assembled or unbalanced assembly is not accepted refund. please consider before taking orders, place order means you have agreed. thank you for your cooperation!

These situations not provide return nor refund

After the assembly or assembly process happen any problem, such as the protection board connected to the wrong wire burned lead to battery damage, charger failure, the assembly error or unbalanced assembly, etc.

Price Protection Policy

At our company, we strive to offer our customers the best value for their money. However, we understand that prices may fluctuate due to market conditions or promotional activities. Therefore, we have implemented a Price Protection Policy to ensure transparency and fairness in our pricing practices.

Under this policy, we do not guarantee price protection for our products. If the price of a purchased product decreases after the purchase, we do not offer refunds or exchanges based on the price difference. It is important to note that this policy applies to all customers, regardless of the purchase date.

In the event that a customer wishes to return or exchange a product, they will be responsible for covering the shipping costs associated with the return or exchange. This ensures that the customer bears the expenses related to the decision to return or exchange the product due to a price drop.

Furthermore, our Price Protection Policy only applies to products that have not been used or tampered with. We cannot accept returns or exchanges for products that have been opened, used, or damaged in any way. This policy is in place to maintain the quality and integrity of our products and to ensure a fair and consistent experience for all customers.

We appreciate your understanding regarding our Price Protection Policy. If you have any further questions or concerns, please do not hesitate to contact our customer service team. We are here to assist you and provide the best possible service.