Returns and refunds

To demonstrate our confidence in the quality of our products, we are pleased to offer the following guarantee for our product.

Limited warranty on battery, limited warranty on charger and charge controller, limited warranty on inverter, and limited warranty on other accessories (other accessories include power strips, battery boxes, monitors, bus bars, switches, circuit breakers, fuse holders, ANL fuses, and six-way fuses).

This warranty is effective from the date of purchase by the user (“Buyer”).

This limited warranty covers material defects in materials or workmanship and performance.

If an Energy Product fails to conform to this Limited Warranty and any and all energy losses are determined by Warrantor's technical support team, Warrantor will repair or replace the defective Product with new or refurbished products.

All replacement products are compatible with the original product and have the same or greater power rating (in some cases).

If for any reason Energy Source is unable to repair or replace the defective product, a refund is available.

The proportional guarantee states that the products manufactured by the energy company (“Guarantor”) will be free from defects in workmanship and materials under normal use and service.

This warranty is effective from the date of purchase by the user ("Buyer").

This limited warranty covers material defects in materials, workmanship and performance and follows the limited warranty guidelines. Additionally, the following table is attached detailing replacement costs for prorated warranty replacement programs. *Please note: Improper installation or operation of the battery will void the warranty.

For detailed installation and operating instructions, please consult the product page on our website, the product manual or contact our customer support team.

A notice:

① Outside the EU and on islands, the shipping costs are borne by the customer. If the original order was shipped within the EU, the customer will bear the additional shipping costs for shipping outside the EU or on islands.

② Before a refund, exchange or discount is granted, the product registered for the warranty must be tested and evaluated by the manufacturer.

Timeusb is not responsible for lost or stolen packages. If your tracking information shows that your package has been delivered to your address but you have not received it yet, please report it to the relevant shipping company according to the information provided on our tracking page.

If you have any further questions, please contact our customer service.

category		product warranty
battery	12V series, 20Ah and higher capacities	5 years
	24V series, 25Ah and higher capacities	5 years
	36V series, 55Ah and higher capacities	5 years
	48V series	5 years
	51.2V series, 30Ah and higher capacities	5 years
	12V 6Ah, 12V 10Ah, 12V 12Ah	3 years
charger	AC-DC DC-DC (with or without MPPT)	2 years
charge controller	All models	3 years
inverter	12V300W	1 year
inverter	12V1000W 12V2000W 12V3000W	2 years
power strip	12V/24V 40A	1 year
battery case	12V100Ah	1 year
monitor	12V/24V/36V/48V 500A	1 year
busbar	12V/24V/36V/48V 300A	1 year
Switch	12V/24V/36V/48V 275A	1 year
circuit breaker	12V/24V/36V/48V 250A	1 year
fuse holder	12V/24V/36V/48V 400A	2 years
ANL fuse	12V/24V 250A	2 years
six-channel fuse	12V/24V 100A	1 year

Return and refund due to product problems

The purchase price at the time - (monthly depreciation fee * number of months since purchase of the product + simple return costs)

A notice:

①Monthly depreciation fee=The purchase price of the product/The warranty period (the warranty period is calculated in months, e.g. 5 years warranty corresponds to 60 months)

② If purchase period is 3 months, you will get a 100% refund.

Return for personal reasons

purchase date	≤ 30 days	30 days ≤ purchase duration ≤ 90 days	90 days<purchase period
restocking fee	10%-15%	10%-15%	As a general rule, we do not accept returns. However, if a return is unavoidable, the following fees will be charged according to the formula below: monthly depreciation costs*purchase period+10%-15% restocking fee+return costs
return costs	/	According to the seller's return and refund policy, a fee will be charged / return shipping at your own expense and providing the tracking number (the latter is free of charge).

Note: If the buyer sends the returned product back to the warehouse by himself, the seller does not need to deduct this fee: if the buyer uses the prepaid return label provided by the seller and returns the product, he is responsible for the return shipping costs.

Cancel order

Before the shipping process begins, the customer can cancel the transaction at any time. The shipping process usually begins within 30 minutes of placing the order. If it is not possible to cancel the order before shipping, the customer should try to contact DPD/DHL/GLS and refuse to accept the package. If these steps are unsuccessful, the return can be made according to the return policy.

exclusions and limitations

Without the express written permission of the manufacturer, the batteries must not be used as life support systems or as primary or emergency power for medical equipment, nor in any application where battery failure could result in personal injury, loss of life, or catastrophic property damage. Use of the batteries in this manner is at the purchaser's own risk. To the extent permitted by law, the manufacturer disclaims all liability for damages arising from such applications. In addition, the manufacturer reserves the right to refuse any service for batteries used for the above purposes and shall not be liable for any claims or damages due to refusal of service.

Reasonable wear rate

The use of unauthorized parts or unauthorized modification of parts within the range prohibited by the manufacturer's written instructions.

The defect is caused by persons other than the manufacturer, including violations of the written operating, maintenance, installation and commissioning instructions, manuals and agreements provided to the purchaser, by the operation or maintenance of the product by such persons, or by the installation and commissioning of the equipment and materials.

Destruction, misuse or force majeure.

The consumables or outputs expected in the normal, regular operation and maintenance of the product.

Customer Responsibilities:

The customer is responsible for performing appropriate maintenance and understanding the limitations of the product. This includes:

1. Excessive discharge due to self-discharge during storage.

2. A non-starting battery is used incorrectly as a starting battery or in applications for which the product is not designed.

3. Open or modify the product.

4. Too high voltage/current applied.

5. Improper storage, e.g. damage caused by storage at non-recommended temperatures or in a manner not recommended in accordance with the user manual.

6. Using a product that is too small.

7.Mechanical damage caused by impact, excessive vibration, penetration, etc.

8. Damage caused by reversed polarity or battery connection.

9. Damage caused by liquids or resulting internal corrosion.

10.Using an incorrect charger or incorrect charging settings.

11. Use a device with built-in charging function to adapt to different battery types.

12. Activating the battery for series or parallel connection will result in product failure.