21700-5000mah/6000mah cylinder cell packing solution

Arosen Power provides industrial-grade 21700 cylindrical cell packing solutions engineered around premium Grade-A 5000mAh and ultra-high-capacity 6000mAh lithium-ion cells. Developed for heavy-duty electric mobility, light electric vehicles (LEVs), automated guided vehicles (AGV/AMR), and commercial energy storage, this modular platform delivers outstanding gravimetric energy density, continuous high-current discharge, and extended thermal resilience.

Flexible Pack & Module Architecture

• Cell Chemistry & Selection: Grade-A high-capacity 21700 cells (5000mAh and 6000mAh options) sorted with stringent internal resistance (IR < 0.5mΩ variance) and voltage grading.
• Modular Configuration: Scalable from single modules up to high-voltage multi-pack systems, including standard high-demand configurations such as 14S7P (50.4V / 52V 35Ah to 42Ah), 13S, 16S, 20S, and custom high-voltage series up to 96V+.
• Discharge Capabilities: Supports continuous discharge rates up to 3C–5C with robust peak pulse capabilities tailored to heavy acceleration and high-torque demands.
• Cycle Longevity: Engineered for 1,000 to 2,000+ deep charge/discharge cycles with superior capacity retention.

Advanced Interconnection & Smart BMS

• Precision Busbar Interconnects: Pure nickel strip or copper-nickel composite busbars welded via high-precision CNC spot and laser welding to minimize internal resistance and thermal buildup.
• Intelligent BMS Protection: Multi-tiered protection against over-voltage, under-voltage, over-current, short-circuit, and multi-channel thermal monitoring (NTC sensors).
• Communication Telemetry: Optional smart communication protocols including CANBUS, RS485, SMBus, and Bluetooth for seamless integration with motor controllers, inverters, and fleet diagnostics.
• Active/Passive Balancing: Continuous cell balancing ensures uniform pack performance and extended operational lifespan.

Mechanical Casing & Environmental Protection

• Structural Cell Holders: Modular flame-retardant (UL94-V0) polycarbonate/ABS cell spacers providing mechanical shock resistance and dedicated airflow heat dissipation channels.
• Enclosure Options: Heavy-gauge PVC shrink wrap with epoxy insulation plates, custom 3D-modeled ABS enclosures, or fully sealed sheet metal and extruded aluminum housings (rated up to IP65 / IP67).
• Vibration & Thermal Potting: Optional silicone thermal potting for harsh off-road, industrial, and marine operating conditions.

Target Applications

• Industrial AGV, AMR, and automated logistics robotics
• Light Electric Vehicles: E-Bikes, E-Scooters, Golf Carts, Utility & Sightseeing Vehicles
• Marine electric propulsion and trolling motors
• Commercial solar backup, UPS power, and portable mobile energy storage

Custom OEM/ODM Engineering Workflow

1. Specification Scoping: Review voltage, capacity, peak/continuous power, physical dimension boundaries, and operating environment.
2. Engineering Design: 3D CAD modeling, electrical schematics, and thermal simulation.
3. Prototype Validation: Comprehensive electrical, environmental, and vibration testing.
4. Mass Production & Global Compliance: Scaled manufacturing with complete UN38.3, MSDS, CE, and RoHS international certification support.

Looking for a tailored 21700 packing solution designed to your exact dimensions and performance profile? Contact our engineering team with your project requirements to receive a preliminary 3D layout, specification sheet, and factory-direct quotation.