Warranty Policy

Humsienk is committed to providing premium lithium batteries that outperform traditional energy storage solutions. All Humsienk products sold through the Humsienk Philippines official website undergo rigorous quality inspection before leaving the factory.

To demonstrate our commitment to product quality, we provide the following warranty for all Humsienk products purchased through authorized Humsienk Philippines sales channels, effective from the date of purchase.

Rest assured, should any Humsienk product exhibit quality issues (as confirmed by our professional technical team), we will offer a replacement or refund. This warranty is subject to the terms and conditions of this Limited Warranty, and Humsienk Philippines reserves the right of final interpretation.

List of Contents

Warranty Period
Warranty Content
Warranty Claim Process
Warranty Exclusions
Contact

Warranty Period

Product Item	Warranty Period
LiFePO4 Batteries (≤50Ah)	3 Years
LiFePO4 Batteries (>50Ah)	5 Years
Refurbished Batteries	3 Years
Battery Chargers	3 Years
Other Battery Accessories	1 Year

Warranty Content

Order Cancellation

Orders can be canceled without providing a reason by contacting us within 30 minutes of order placement.
If the order has already been shipped, cancellation is no longer possible. In such cases, please refuse delivery from the courier upon arrival.

30-Day No-Reason Return

Humsienk Philippines offers 30 days of free returns from the delivery date. No-reason returns are subject to the following conditions:

Item and accessories are undamaged
Original packaging is intact
Item must be in resellable condition

For non-defective returns, the buyer is responsible for return shipping costs, which will be deducted from the order amount if applicable.

Personal Reason Returns

If more than 30 days have passed since the shipping date and the buyer requests a return, a valid reason must be provided, and all conditions of the 30-day no-reason return must still be met.

For non-defective returns, the buyer bears the return shipping cost, which will be deducted accordingly.

Defective Product Returns

If a Humsienk product is confirmed by our technical support team to have a quality defect, we will provide one of the following solutions based on the product condition and warranty status:

Replacement

Months Since Purchase	Cost
≤ 18 Months	Free
> 18 Months	Pay Price Difference

Notes:

Price Difference = Current Price − (Purchase Price − Monthly Depreciation × Months Owned − Return Shipping)
Monthly Depreciation = Purchase Price / Total Warranty Months
The warranty of the replacement product continues from the original purchase date

Refund

Months Since Purchase	Refund Amount
≤ 6 Months	100% of Purchase Price
6 < X ≤ 18 Months	Purchase Price − (Monthly Depreciation × Months)
> 18 Months	Purchase Price − (Monthly Depreciation × Months) − Return Shipping − Processing Fee

Notes:

Monthly Depreciation = Purchase Price / Warranty Months
Processing Fee = One-way shipping cost
Refunds will be issued to the original payment method
If you do not receive your refund within 10 business days, please contact us

Warranty Claim Process

If you believe your product is defective, please follow the steps below:

Register Warranty
Ensure that the warranty for your product has been successfully activated.
Contact Customer Service
Contact us via email or online chat and provide your order number, purchase platform, problem description, and relevant photos or videos.
Troubleshooting
Our support team may request basic troubleshooting to confirm the issue is related to the battery itself and not external components.
Confirmation & Resolution
Once our technical team confirms the defect, we will provide a replacement or refund according to this warranty policy.

Warranty Exclusions

This limited warranty does not cover the following situations:

Normal Wear and Tear
Natural capacity degradation over time due to normal use is not covered.
Misuse or Improper Handling
Including improper installation, overcharging, physical damage, or operation outside specified parameters.
Accidental Damage
Damage caused by dropping, crushing, liquid exposure, or extreme environmental conditions.
Unauthorized Repairs or Modifications
Any repair or modification performed by unauthorized personnel will void the warranty.
Third-Party Products
Damage caused by third-party accessories or components is not covered.
Force Majeure
Damage resulting from natural disasters, war, or other force majeure events is excluded.
Cross-Border Use
This limited warranty applies only within the Philippines. Products shipped, taken, or used outside the Philippines are not covered.
Unauthorized Sellers
Products purchased from unauthorized third-party sellers are not covered under this warranty.