Return, Refund & Warranty Policy

Last Updated: October 22, 2026

At MIBANG POWER (operated by Dongguan Mibang New Energy Co., Ltd., referred to as “MIBANG,” “we,” “us,” or “our”), we stand behind the quality of our lithium batteries and energy storage solutions. Please read this Return, Refund & Warranty Policy carefully before purchasing or assembling your products. Nothing in this policy limits any mandatory consumer rights that cannot legally be excluded under applicable law.

Policy Summary at a Glance

1. 30-Day Voluntary Return Policy

We offer a 30-day return policy for eligible standard products purchased directly from our official website (https://www.mibangvolt.com). The return period begins on the date you receive your order. You must contact us within 30 calendar days of delivery to request a voluntary return.

Products purchased through third-party retailers or distributors are subject to the original seller’s return procedures, without affecting any statutory rights you may independently hold under applicable law.

1.1 Return Eligibility Requirements

To qualify for a voluntary (change-of-mind) return, products must meet all of the following conditions:

• Be requested within 30 calendar days of delivery.

• Be completely unused and in their original, resalable condition.

• Be free from any spot-welding, soldering, tab-welding, glue, assembly, or unauthorized modification.

• Include all original packaging, accessories, manuals, and documentation.

• Be safely packaged for an authorized return shipment in compliance with lithium battery transportation regulations.

Tip: We strongly recommend keeping the original specialized packaging for at least 30 days after delivery.

1.2 Products Excluded from Voluntary Returns

The following items cannot be resold once processed, altered, or customized, and are strictly excluded from non-defective, change-of-mind returns:

• Processed Bare Battery Cells: Individual lithium battery cells (including 18650, 21700, 32140, 32700, and prismatic cells) that have been spot-welded, soldered, assembled, modified, or otherwise permanently altered.

• Used UAV / Drone Battery Packs: Drone and UAV lithium battery packs that have been mounted, cycled, discharged, or used.

• Custom & OEM/ODM Orders: Custom-configured battery packs, OEM/ODM products manufactured to customer specifications, and private-label or personalized items.

• Altered Raw Materials & Accessories: Battery cell raw materials, nickel strips, BMS boards, or accessories that have been soldered, cut, or permanently altered.

(Note: Unused, standard bare battery cells that have never been spot-welded, soldered, or altered may still be considered for a voluntary return within 30 days of delivery, subject to our return inspection requirements.)

2. Special DOA & Initial Defect Policy (Bare Cells & UAV Battery Packs)

Because individual lithium battery cells (such as 18650, 21700, 32140, 32700, etc.) cannot be resold once spot-welded, and UAV/drone lithium battery packs are high-drain consumable items whose lifespan depends heavily on user operating conditions, neither category participates in our 12-month commercial warranty or post-use return policy.

Instead, these products are covered exclusively by our 30-Day Initial Defect and Dead on Arrival (DOA) Policy, governed by the following rules:

1. Mandatory 14-Day Inspection & Reporting Window: If your order contains bare battery cells (18650, 21700, 32140, 32700, etc.) or UAV/drone lithium battery packs that arrive defective or Dead on Arrival (DOA), you must inspect and test the items immediately upon delivery and contact us within 14 calendar days of receipt to file an after-sales claim.

2. Mandatory Pre-Welding Test: Customers must measure the voltage and verify the charging capability of all bare battery cells before spot-welding, soldering, or assembling them into a battery pack.

3. DOA Technical Qualification Criteria:

   • Eligible as DOA: A battery cell or pack that arrives with zero voltage, abnormally low voltage (below minimum recoverable safety thresholds), or an inability to accept a charge upon arrival is classified as DOA and qualifies for free replacement.

   • Not Considered Defective: A battery cell or pack that shows a measurable normal voltage upon arrival and can accept a charge normally is not considered defective.

   • Disqualified Items: Any battery cells that have already been used, spot-welded, soldered, glued, or had tabs/nickel strips attached are strictly ineligible for DOA or defect claims.

4. Remedy (Replacement Only) & Free Return Shipping: Verified DOA or initial defect claims for bare cells and UAV battery packs qualify for product replacement only upon verification by our technical support team. Direct refunds are not offered for DOA claims unless a replacement is unavailable or a refund is mandatorily required by applicable law. MIBANG will cover reasonable authorized return and replacement shipping costs for all verified DOA claims.

3. How to Request a Return or DOA Claim

To request a return or submit a DOA/defect claim, please contact our customer support team within the required timeframe (within 14 calendar days of receipt for DOA/initial defect claims on bare cells and UAV packs; within 30 calendar days of receipt for standard returns):

• Email: sales@mibangvolt.com

Please include the following required information in your email:

1. Order Number and proof of purchase (invoice or order confirmation).

2. Product Name and Model.

3. Serial Number or Batch Verification Code (if applicable).

4. Detailed Reason for the return or defect claim.

5. Visual & Diagnostic Evidence: Clear photographs or videos showing the product condition, along with diagnostic test results (such as multimeter voltage readings or charger screen readings) for any reported DOA or defective items.

3.1 Return Merchandise Authorization (RMA) Procedure

• Once your request is approved, our support team will issue a Return Merchandise Authorization (RMA) number and provide authorized return shipping instructions.

• Clearly display the RMA number on the exterior shipping label or accompanying return documentation. Do not write the RMA number directly on the original product box.

• Do not ship any products back before receiving an RMA number and our authorized return shipping instructions. Unauthorized return shipments may be rejected by customs, carriers, or our receiving facility.

4. Return Shipping Costs & Lithium Battery Safety

4.1 Who Pays for Return Shipping?

• Covered by MIBANG: MIBANG will pay for reasonable authorized return and replacement shipping costs if the return is due to:

  • Confirmed manufacturing defects or verified DOA items reported within the applicable window;

  • Products damaged in transit due to inadequate packaging;

  • Incorrect items shipped due to our error; or

  • Qualifying shipping delays attributable to MIBANG.

• Paid by the Customer: For voluntary, change-of-mind returns of unused eligible items (e.g., ordering the wrong size, voltage, capacity, or model, choosing an incompatible battery, or no longer needing the item), the customer is responsible for all return shipping costs. Where disclosed and permitted by law, authorized return shipping fees may be deducted from your refund.

4.2 Lithium Battery Return Shipping Safety Rules

Lithium batteries are classified as regulated dangerous goods during transport. For safety and legal compliance:

• Never ship lithium batteries back via standard postal services or air mail without following our authorized return instructions.

• Damaged, Swollen, or Leaking Batteries: If a battery appears swollen, leaking, abnormally hot, emits an odor, or suffers severe physical damage, stop using or charging it immediately, place it in a fireproof area away from flammable materials, and contact sales@mibangvolt.com for safe handling guidance. Such batteries are strictly prohibited from standard transportation. Where physical return is unsafe or legally prohibited, we will arrange an alternative resolution after verifying photographic/video evidence.

5. Refund Policy & Processing Time

5.1 Refund Eligibility & Deductions

• Full Product-Price Refund: Approved voluntary returns of unused, unaltered items requested within 30 calendar days of delivery are eligible for a full product-price refund once the returned goods are received and pass inspection.

• Shipping & Restocking Deductions: Original optional expedited shipping fees and customer-paid return shipping costs are non-refundable (except in cases of seller fault or where required by law). If a voluntary return arrives in a condition materially different from its original condition, a reasonable restocking or value-reduction fee may be deducted where permitted by law. No restocking fee is ever charged for confirmed defective products.

• After 30 Calendar Days: Voluntary change-of-mind refunds are not available after 30 calendar days from delivery.

5.2 Refund Processing Timeline

1. MIBANG Processing Time: Once your authorized return reaches our facility and passes inspection, we process eligible refunds within 10 business days back to your original payment method.

2. Bank / Payment Provider Posting Time: After we issue the refund, your bank, credit card company, or payment provider typically takes an additional 7 to 10 business days to post the funds to your account.

3. Missing or Delayed Refunds: If you have not received your refund after the timeframe above, please check with your bank or credit card issuer first. If the funds are still missing, contact us at sales@mibangvolt.com with your order number and we will promptly assist you in tracking the transaction.

6. Order Cancellations

• Standard Products: You may request an order cancellation free of charge before your order has been dispatched by emailing sales@mibangvolt.com.

• Custom / OEM / Made-to-Order Products: Once production or custom assembly has begun, customized orders may be subject to cancellation restrictions or material fees as disclosed and agreed prior to purchase.

7. 12-Month Limited Product Warranty

MIBANG provides a 12-month limited commercial warranty to the original consumer purchaser for eligible complete battery packs and energy storage systems purchased directly from our official website. This warranty covers defects in materials and workmanship under normal use and is non-transferable.

7.1 Products Excluded from the 12-Month Warranty

As detailed in Section 2, the following products are excluded from the 12-month commercial warranty and are covered solely by our 30-Day DOA / Initial Defect Policy (14-day reporting window):

• Individual / Bare Lithium Battery Cells (18650, 21700, 32140, 32700, prismatic cells, etc.).

• Unmanned Aerial Vehicle (UAV) / Drone Lithium Battery Packs (high-drain consumables with no guaranteed cycle lifespan).

• Battery cell raw materials and accessories.

• Any cells or components subjected to spot-welding, soldering, or custom assembly.

7.2 What Is Not Covered (Warranty Exclusions)

Our 12-month limited commercial warranty does not cover damage, capacity loss, or failure resulting from:

• Misuse, abuse, negligence, improper handling, or accidental drops/crashes (including drone flight impacts).

• Spot-welding, soldering, unauthorized modifications, or third-party repair attempts.

• Incorrect installation, reversed polarity, short circuits, or use with incompatible equipment/chargers.

• Overcharging, excessive/deep discharging, or operating outside published temperature and current limits.

• Failure to follow required storage and maintenance instructions (eligible rechargeable batteries must be fully charged within 7 days of receipt and recharged at least once every 3 months during storage).

• Normal Wear and Tear: Natural electrochemical capacity fade and performance degradation over time due to normal charge/discharge cycles, aging, and environmental conditions.

• Products purchased from unauthorized resellers or online auction platforms.

7.3 Warranty Remedies & Replacement Coverage Period

For covered defects during the 12-month warranty period, MIBANG will, at its reasonable discretion and in accordance with applicable law, repair the defective product, replace it with the same or a functionally equivalent model (which may include certified refurbished components where legally permitted), or offer another statutory remedy.

Any repaired or replacement product continues to be covered for the longer of:

• The remainder of the original 12-month warranty period; or

• 90 calendar days from the date you receive the repaired or replacement item.

8. Compatibility & Warranty Disclaimers

• Customer Responsibility for Compatibility: Battery cells and packs may experience performance degradation or premature failure depending on usage, discharge rates, cycling, aging, and environmental conditions. MIBANG makes no representations or guarantees regarding the compatibility, suitability, or fitness of any battery or cell for a specific third-party electronic device, custom battery pack, or specialized application. Customers are solely responsible for verifying technical specifications (voltage, capacity, chemistry, dimensions, continuous discharge rating, and connector type) prior to purchase and use.

• Disclaimer of Implied Warranties: Except for the express 12-month limited commercial warranty and the DOA replacement policy explicitly stated on this page, and to the maximum extent permitted by applicable law, all products and website information are provided on an “AS IS” basis without any other express or implied warranties, including implied warranties of merchantability, fitness for a particular purpose, and non-infringement. Some jurisdictions do not allow limitations on implied warranties, so these exclusions may not apply to you.

• Statutory Consumer Rights: This policy operates alongside, and does not exclude or limit, any mandatory consumer protection rights or statutory guarantees applicable in your country or region.

9. Contact Us

If you have any questions about returns, DOA claims, refunds, or warranty support, please reach out to our customer service team:

• Company: Dongguan Mibang New Energy Co., Ltd.

• Brand: MIBANG POWER

• Email: sales@mibangvolt.com

• Website: https://www.mibangvolt.com

• Business Address: Building 5, Min-Hong Industrial Zone, Qingxi Town, Dongguan City, Guangdong Province, China