Premium 2000 Circles Long Life 26700 LiFePO4 3600mAh Battery for E-Bike. OEM and ODM Services: Full customization support including designs and samples for battery solutions. Free Sample Availability: Samples provided for quality testing before mass production upon request. Comprehensive Certifications: Products certified with ISO9001, ISO14001, SGS, CE, RoHS, UN38.3, and MSDS. High Production Capacity: Daily output exceeds 1,300,000 pieces with 21 assembly lines and advanced equipment. Flexible Packaging Options: Standard carton packaging available with custom blister card or client-specific options. Multiple Shipping Methods: Logistics support via sea, air, train, and courier services globally. Strong R&D Capability: Dedicated team of 8 engineers developing new products with annual invention patents. Strict Quality Control: 100% visual and function inspection with traceable raw materials and 7 QA inspectors.