The Sunfit Tubular Battery! Here’s a comprehensive overview: *General Specifications* 1. Capacity: 220Aah 2. Voltage: 12V 3. Type: Tubular Battery 4. Chemistry: Lead-Acid (AGM or Gel) 5. Weight: Approximately 55-65 kg (121-143 lbs) 6. Dimensions: 52 x 22 x 25 cm (20.5 x 8.7 x 9.8 in) *Performance Characteristics* 1. Reserve Capacity (RC): 450 minutes 2. Internal Resistance: < 2.2mΩ 3. Self-Discharge (21°C/70°F): < 3%/month 4. Operating Temperature: -20°C to 50°C (-4°F to 122°F) 5. Max Discharge Current: 600A (5 seconds) 6. Max Charge Current: 60A *Tubular Plate Design* 1. Unique tubular plate design for improved durability and performance 2. Increased surface area for better charge acceptance 3. Reduced internal resistance for improved efficiency *Features* 1. Maintenance-free (AGM or Gel technology) 2. Leak-proof and spill-proof design 3. Flame retardant casing 4. Safety valves for over-pressure protection 5. Long lifespan (up to 15-20 years) *Applications* 1. Off-grid solar systems 2. Wind power systems 3. Telecommunications 4. Backup power systems 5. Renewable energy systems 6. Industrial and commercial applications 7. RV and marine applications *Warranty and Support* 1. 1-year warranty (standard) 2. 10-year warranty (optional) 3. Dedicated customer support 4. Worldwide distribution network *Certifications and Compliance* 1. UL (Underwriters Laboratories) certified 2. IEC (International Electrotechnical Commission) certified 3. ISO 9001:2015 certified 4. Compliance with international standards and regulations *Pricing and Availability* 1. Around $400-$600 (depending on retailer and location) 2. Available through authorized distributors and online retailers *Comparable Batteries* 1. Exide 220Ah Tubular Battery 2. Luminous 220Ah Tubular Battery 3. Amaron 220Ah Tubular Battery 4. Okaya 220Ah Tubular Battery *Charging and Maintenance Guidelines* 1. Recommended charge voltage: 14.4V-14.7V 2. Recommended charge current: 20A-60A 3. Equalization charge: every 30 days 4. Regular maintenance checks: every 6 months *Technical Data* 1. Capacity (10hr rate): 220Ah 2. Energy (Wh): 2640Wh 3. Cold Cranking Amps (CCA): 600A 4. Terminal Type: M8/M6 *Manufacturer Information* 1. Manufacturer: Sunfit Battery Co., Ltd. 2. Country of Origin: China 3. Established: 2005 4. Product Range: Deep cycle batteries, solar batteries, tubular batteries, etc. Please note that specifications and pricing may vary depending on the retailer, location, and availability. Would you like more information on: 1. Sunfit Tubular Battery’s warranty and support? 2. Comparison with other battery brands? 3. Charging and maintenance guidelines?