Warranty & After-Sales Service Policy

At Braun Power, we are committed to providing high-quality lithium battery products and reliable after-sales support to customers worldwide.
Our goal is to ensure that every customer receives professional assistance throughout the entire product lifecycle.

1. Warranty Coverage

All Braun Power products are covered by a limited warranty according to the warranty period stated on the product page.

The warranty covers:

Manufacturing defects
Material defects
Product performance issues caused by production quality

During the warranty period, Braun Power will provide appropriate solutions according to the actual situation.

Possible solutions include:

• Technical support
• Replacement parts
• Product repair
• Product replacement

2. How to Request After-Sales Support

If you experience any product issue, please contact our support team with the following information:

1. Order number
2. Product model and serial number
3. Description of the problem
4. Photos or videos showing the issue
5. Relevant installation information (if applicable)

Our technical team will review your case and provide a solution as quickly as possible.

3. Technical Diagnosis

After receiving your request, our engineers will analyze the issue based on:

• Product operating conditions
• Installation method
• BMS data (if available)
• Photos/videos provided
• Troubleshooting results

We will determine the cause of the issue and recommend the most suitable solution.

4. Warranty Does Not Cover

The warranty does not apply to damage caused by:

Incorrect installation
Incorrect wiring or polarity connection
Use with incompatible equipment
Overcharging or over-discharging
Short circuit
Physical damage or impact
Water damage or extreme environmental conditions
Unauthorized modification or repair

For DIY battery assembly, customers are responsible for ensuring correct assembly, proper BMS selection, and safe operation.

5. Return & Replacement Policy

Before Returning Any Product

Please contact Braun Power customer support first.

Do not send products back without receiving return instructions.

Defective Products

If a product is confirmed to have a manufacturing defect:

Braun Power may provide:

• Replacement product
• Repair service
• Replacement components
• Other appropriate solutions

The solution will depend on the specific situation.

Return Conditions

Returned products must:

• Include original order information
• Be properly packaged
• Not show damage caused by misuse

Products damaged due to improper handling may not qualify for return or replacement.

6. Shipping Damage

We carefully inspect and package all products before shipment.

If your package arrives damaged:

Please:

1. Take photos/videos of the package condition
2. Record the damage with the carrier
3. Contact us within 48 hours after delivery

We will assist you in resolving transportation-related issues.

7. DIY Battery Safety Guidelines

For customers purchasing battery cells or DIY battery components:

Before assembly:

✔ Check cell voltage and internal resistance
✔ Ensure cells are properly matched
✔ Use a suitable BMS
✔ Follow correct assembly procedures

Braun Power is not responsible for damage caused by:

• Incorrect DIY assembly
• Incorrect BMS settings
• Improper charging/discharging
• Unsafe storage conditions

Customer Satisfaction Commitment

At Braun Power, we value every customer and are committed to providing reliable products, transparent service, and long-term technical support.

Thank you for choosing Braun Power as your trusted energy storage partner.