We are a professional AAA cylindrical battery factory exclusively dedicated to 10440-format 3.2V LiFePO4 (lithium iron phosphate) battery production. As a 实体 manufacturing base with independent R&D and full-cycle production capabilities, our factory integrates precision manufacturing, smart quality control, and scalable supply—delivering industrial-grade reliable AAA cylindrical batteries for global B2B clients in industrial control, IoT, medical devices, and outdoor electronics. Our core strength lies in factory-specific advantages: specialized production lines, strict on-site quality management, and compliant large-scale manufacturing.

Core Factory Configuration: Specialized for AAA Cylindrical Batteries

1. Factory Infrastructure & Layout

Dual Production Bases: Two coastal-located factories (total area 50,000㎡) with convenient logistics access to major ports. Factory 1 focuses on mass production (20 automated lines) while Factory 2 specializes in custom R&D and small-batch production (5 pilot lines).

Class 1000 Clean Workshops: 8 dust-free production areas (12,000㎡) optimized for AAA cylindrical battery assembly, with constant temperature (23±2℃) and humidity (40±5%) control to ensure LiFePO4 material stability.

Integrated Production Flow: Streamlined layout covering electrode preparation → precision winding → electrolyte injection → laser sealing → formation aging → quality testing → packaging, minimizing material transfer and ensuring production efficiency.

Warehousing & Logistics: 3,000㎡ temperature-controlled raw material warehouse (for LiFePO4 cathodes and graphite anodes) and 5,000㎡ finished product warehouse, equipped with automated storage systems (ASS) for 30 million units annual storage capacity.

2. Specialized Production Lines for AAA Cylindrical Batteries

10440-Format Dedicated Lines: 25 automated production lines exclusively for AAA cylindrical batteries, with 3.2V-specific process optimization. Key equipment includes:

Precision winding machines (tension control ±0.1N) for uniform electrode alignment in cylindrical structure

Laser welding systems (sealing leak rate ≤1×10⁻⁶ Pa·m³/s) for hermetic cap sealing

Temperature-controlled electrolyte injection machines (dosage accuracy ±0.01ml)

Automated aging ovens (72-hour constant-voltage aging for 3.2V cells)

Smart Production Control: MES (Manufacturing Execution System) fully deployed across all lines, real-time monitoring of 120+ production parameters (electrode thickness, voltage precision, sealing tightness) with 0.1s data sampling frequency.

Scalable Capacity: Annual production capacity of 30 million AAA cylindrical batteries, supporting:

Bulk orders: 100,000+ units/month (lead time 7–15 days)

Custom batches: MOQ 500 units (lead time 2–4 weeks via pilot lines)

Capacity expansion: 4 additional lines under construction (increasing output by 4.8 million units/year)

3. On-Site Quality Control Laboratory

Dedicated Testing Center: 800㎡ on-site laboratory with 30+ specialized equipment for AAA cylindrical batteries:

Voltage precision testers (±0.001V accuracy) for 3.2V consistency checks

Cylindrical shell roundness gauges (tolerance ±0.02mm)

Cycle life testing chambers (2000+ cycles simulation)

Extreme environment test equipment (-40℃ to 60℃ temperature range, vibration 10–2000Hz)

UN38.3 compliance testing setups (impact, thermal abuse, short-circuit)

Full-Cycle Inspection Process:

Incoming material inspection (LiFePO4 purity ≥99.5% verification)

In-line 100% inspection (winding uniformity, sealing quality)

Post-production sampling (5% batch testing for 3.2V discharge performance)

Aging screening (72-hour 3.2V constant-voltage test for all finished cells)

Traceability System: Unique QR code for each battery, linking to factory production records (raw material batch, production line, test data, inspector ID) accessible via client portal.

3.2V AAA Cylindrical Battery Core Production Technology

1. Material & Cell Design Optimization

High-purity LiFePO4 cathodes (≥99.5%) and modified graphite anodes, tailored for 3.2V nominal voltage

Electrode ratio optimization (1:1.05 cathode/anode) for stable 3.2V discharge curves (100% to 0% SOC)

10440 cylindrical format maximizing energy density (1000–1500mAh) with compact footprint

2. Factory-Exclusive Manufacturing Processes

Precision Winding: Customized equipment for AAA cylindrical structure, ensuring uniform electrode alignment to minimize internal resistance

Hermetic Laser Sealing: Factory-calibrated welding parameters for airtight sealing, preventing electrolyte leakage

Gradient Electrolyte Injection: Temperature-controlled (25±2℃) process for uniform distribution, reducing self-discharge (≤2%/year at 25℃)

Anti-Corrosion Shell Treatment: 304 stainless steel stamping + nickel-plated coating (in-house processing line)

3. R&D-Production Integration

Dedicated pilot production line in Factory 2 for new product development

Rapid prototyping capability (2–4 weeks) for customized 3.2V solutions (capacity, discharge rate, packaging)

12+ patents in LiFePO4 cylindrical battery design and manufacturing

Application-Specific Solutions (Factory-Proven)

Industrial Control: ±0.01V voltage stability, vibration resistance (10–2000Hz) – 5 million units supplied annually to automation brands

IoT Devices: 0.05C ultra-low discharge rate, 5–10 year service life – qualified supplier for smart meter manufacturers

Medical Equipment: ISO 13485 certified production line, sterile-grade process – trusted by 15+ global medical device brands

Outdoor Electronics: IP67 waterproofing, -40℃ low-temperature performance – factory-tested for extreme environments

Factory Advantages: Why Choose Our AAA Cylindrical Battery Factory?

Specialization: Exclusive focus on 3.2V AAA cylindrical LiFePO4 batteries – no generic production, all equipment/facilities optimized for this format

Scalability: 30 million units/year capacity + expandable lines, ensuring stable supply for growing client needs

Quality Assurance: On-site laboratory + full-cycle inspection + MES smart control – 0.03% defect rate (factory-tested data)

Compliance: Factory certified with ISO 9001, ISO 14001, ISO 13485, UL 1642 – full compliance with global standards

Transparency: Client factory visits welcome, real-time production monitoring via MES portal

Sustainability: 100% renewable energy powering production, recyclable packaging, wastewater treatment system (reuse rate 95%)

Factory Compliance & Sustainability

Environmental Management: Wastewater treatment plant (daily capacity 500m³), dust collection systems, electrolyte recycling program

Safety Certifications: UN38.3, UL 1642, CE, RoHS, REACH, EU EPR compliance

Social Responsibility: Labor compliance (ISO 45001), anti-child labor policy, employee training programs

We invite you to visit our AAA cylindrical battery factory to inspect production lines, quality control processes, and R&D facilities. Contact us today for factory sample requests, technical datasheets, or bulk production quotations. Let’s build a reliable partnership based on transparent manufacturing and high-quality 3.2V AAA cylindrical batteries.