We provide warranty service, please check the warranty clause in the Product Description. Deep cycle LiFePO4 battery has smaller size, lighter weight, superior performance and longer service life, which can greatly reduce Lead Acid Battery replacement. The cell of jmbatteries LiFePO4 battery pack has obtained CE, SGS, ISO, KC, IEC, UN38.3 Test certification.

We work hard to improve the quality of our products. Every product has to undergo a series of thorough inspections before shipped out. Once our product somehow fail to satisfy you, please contact us directly and let us help you.

For order placed from official site jmbatteries.com returns or warranty claims contact sales01@jmbatteries.com

Warranty

All products are covered by a warranty starting from the date of purchase: the battery enjoys a 10-year warranty, and the BMS (Battery Management System) enjoys a 5-year warranty, both covering defects in materials and workmanship.

Within 30 days from the date of purchase, if the product malfunctions due to quality issues, we can provide remote guidance and accessory replacement services.

For products that fail to function normally after 30 days but within 3 years of purchase, consumers need to assist us in completing a full battery inspection. Once the quality issue is mutually confirmed, we will send new accessories free of charge and provide remote guidance for replacement.

For products that are more than 3 years but no more than 10 years old from the date of purchase, we offer free after-sales and maintenance services.

If you encounter any problems during product use, please feel free to contact us via our customer service email: sales01@jmbatteries.com, and we will provide 24-hour customer service.

Please read the product manual carefully before installation and use. If serious product damage is caused by failure to install, use or maintain the product in accordance with the manual, such issues will not be covered under the warranty.

We must ascertain whether the product has gone faulty due to defects in materials/workmanship or misuse/neglect.

Any and all damage caused by depletion of consumable parts, abuse, accident, modifications, unauthorized repairs, neglect, water damage, or any other issue not caused by defects in materials and workmanship is not covered under the warranty.

Precautious

Please use the LiFeP04 battery charger specifically for that purpose.

Do not strike battery with any sharp edge parts, such as Ni-tabs, pins and needles.

Do not immerse the battery in water and seawater.

Do not use or leave the battery near a heat source such as fire or heater.

Do not reverse the position and negative terminals.

Do not connect the battery to an electrical outlet.

Do not throw the battery in fire or heat it and bend it.

Please tighten the battery terminals firmly and use appropriate size wiring, or it can result in overheating and battery damage

Do not connect the positive and negative terminals with metal object.

Do not transport or store the battery together with metal objects such as necklaces, hairpins etc.

Do not directly solder the battery and pierce the battery with a nail or other sharp object.

Do not directly connect the battery to a starter machine, our battery are not designed for starting engines.

Battery Storage Notice

The battery should be stored within the temperature range specified in the product specification. If the storage time exceeds 3 months, it is recommended that you charge the lithium iron phosphate battery. Otherwise, the service life of the battery may be affected. In order to protect the battery, please do not exceed the specified maximum discharge current, and do not be lower than the specified discharge voltage.

When you receive the product, please read the product manual carefully, which contains the installation method, precautions and detailed warranty terms of the product. When you use the battery for the first time, please fully charge it.