Warranty Policy
At WEIZE, we are committed to driving innovation and delivering sustainable solutions that make a meaningful difference. As a reflection of our confidence in product quality, we proudly offer a comprehensive warranty on all WEIZE batteries and other items.
Warranty Coverage
This warranty begins on the original date of purchase and applies to defects in materials, workmanship, or performance under normal use and service conditions.
If a WEIZE product fails to meet the standards outlined in our Limited Warranty—as assessed by our technical support team—we will, at our discretion, repair or replace the item with a new or refurbished unit. Replacement units will match or exceed the original product’s specifications and rated power.
If a repair or replacement is not feasible, a refund may be issued in accordance with the terms of our Limited Warranty. A detailed replacement cost schedule, based on the remaining warranty period, is available within the warranty documentation.
Warranty Exclusions
This warranty will be void under the following conditions:
🔸The product has been dismantled, misused, or improperly installed
🔸The product has been altered or tampered with in any way
For proper installation and usage, please refer to the product manual, visit the product page on our website, or contact WEIZE Customer Support.
Additional Information
🔸For orders delivered within the contiguous United States that are subsequently forwarded to U.S. islands or international destinations, the buyer assumes responsibility for any return shipping costs.
🔸WEIZE is not liable for packages that are lost or stolen after delivery. If tracking information shows the package was delivered but not received, please report the issue to the shipping carrier. Our customer service team is also available to assist with further steps.
🔸All warranty claims require that the product be returned to WEIZE’s warehouse for inspection and verification by our technical support team. Refunds, replacements, or discounts will only be processed following this assessment.
| Category | Warranty |
|---|---|
| LiFePO4 Lithium Batteries | 10 Years (120 Months) |
| LiFePO4 Lithium Motorcycle Batteries | 5 Years (60 Months) |
| AGM Car Batteries | 3 Years (36 Months) |
| AGM Lawn Tractor & Mower Batteries | 1 Year (12 Months) |
| AGM ATV & Motorcycle Batteries | 1 Year (12 Months) |
| AGM Golf Cart Batteries | 2 Years (24 Months) |
| AGM Sealed Lead Acid batteries | 1 Year (12 Months) |
| Battery Chargers | 2 Years (24 Months) |
| Accessory (Monitor, Battery Box, Plug, Switch) | 1 Year (12 Months) |
| Product Issues | Returns & Refunds (Refund) |
|---|---|
| Product Purchased Months ≤ 3 Months | 100% Refund |
| Product Purchased Months ＞ 3 Months | Refund Amount = Original Purchase Price − (Monthly Depreciation Fee* × Number of Months Used) − One-Way Return Shipping Fee − Handling Fee |
| Product Issues | Returns & Exchanges (Exchange Fees) |
|---|---|
| Product Purchased Months ≤ 12 Months | / |
| Product Purchased Months ＞ 12 Months | Exchange Fee = Current Product Sale Price − [Original Purchase Price − (Monthly Depreciation Fee* × Months Used) − One-Way Return Shipping Fee] |
| Monthly Depreciation Fee = Original Purchase Price ÷ Total Warranty Period (in months) |
|---|
| For example: A 1-year warranty is calculated as 12 months. |
| Handling Fee: Items under 50 lbs: $5; 50 lbs to 100 lbs: $10; 100 lbs to 150 lbs: $15; Over 150 lbs: $20 |
| Personal Reasons | Returns & Refunds (Refund) |
|---|---|
| Product Purchased Months ≤ 3 Months | Shipping fees will be paid by the buyer |
| Product Purchased Months ＞ 3 Months | Not Accepted |
Friendly Reminder: When returning a product, please include everything that came with it—original box, product, accessories, and any documents. This helps us process your return quickly and smoothly. If anything is missing or damaged, we may not be able to issue a full refund or replacement.
Not sure how much you're eligible to receive under warranty? Use this simple formula to find out! 👉
Wondering how much you'll need to pay for a replacement item under warranty? Use this simple formula to find out! 👉
Order Cancellation
Buyers have a 60-minute window to cancel their order after it’s been placed. If the order has already been shipped or picked up and can no longer be canceled, we recommend contacting the shipping carrier directly to refuse the package upon delivery.
Limitations and Exclusions
Buyer Responsibilities
Buyers are responsible for understanding the product’s limitations and using it correctly. This includes:
🔸Avoid using incompatible chargers or charging configurations.
🔸Do not exceed the product's specified voltage or current limits.
🔸Prevent vandalism, abuse, and misuse.
🔸Avoid exposing the product to extreme temperatures (hot or cold).
🔸Do not use non-starting batteries as starting batteries or in applications not designed for the product.
🔸Never open or modify the product. Avoid damage from unauthorized repairs, modifications, or conversions.
🔸Do not use alligator clips to connect the charger or load.
🔸Avoid using undersized products that may not meet your needs.
🔸Prevent damage from contamination, such as water, radiation, or hazardous substances.
🔸Follow any instructions regarding series and parallel connections—never force connections that may lead to failure.
🔸Prevent excessive discharge, especially during storage, due to self-discharge.
🔸Avoid damage caused by improper installation, operation, handling, transportation, storage, or maintenance.
🔸Prevent mechanical damage from shocks, excessive vibrations, or impacts.
🔸Ensure correct polarity connections to avoid reverse polarity damage.
🔸Prevent damage caused by liquids or internal corrosion.
Not Covered by Warranty
The warranty does not cover the following:
🔸Insufficient ventilation or poor air circulation.
🔸Normal wear and tear from regular use.
🔸Loss or theft of the product.
🔸High-temperature damage at terminals caused by not using washers or properly tightening terminals.
🔸Electrical issues such as power surges, uncontrolled voltages, currents, energy supply imbalances, system harmonics, or lightning strikes.
🔸Force majeure events, including fires, floods, earthquakes, hurricanes, severe weather, wars, or acts of terrorism.
🔸Damage caused by improper operation, maintenance, installation, or handling, including failure to follow provided instructions, manuals, or agreements.
🔸Consumable items that are intended to be used up or replaced during normal product operation.
🔸Use of the product in life support systems or medical devices, unless explicitly authorized by WEIZE. Any use where failure of the battery could result in personal injury, loss of life, or catastrophic property damage is at the buyer's own risk. WEIZE disclaims any liability for such uses and reserves the right to refuse service for batteries used in these contexts.
