Cylindrical ultracapacitor C46W-4N2-0008

with low serial equivalence resistanceESRhigh-power

Product Overview
Hybrid ultra capacitor combines the principles and advantages of EDLC supercapacitors and lithium batteries, with an energy density of 80~120Wh/kg. It compensates for the low energy density of traditional EDLC devices and offers superior charge/discharge rate, low-temperature performance and cycle life compared with lithium batteries.

Applications
Applicable to automotive (redundant/backup power), new energy systems (primary/secondary frequency regulation), smart grid backup power (FTU/DTU), rail transportation and construction machinery (power supply), uninterruptible power supply (UPS) and similar applications.

Standards & Certifications
Meets GB/T34870, GB/T 31485, DL/T2080, QC/T 741 and AEC-Q200 vehicle requirements. Certified by UL, UN38.3, RoHS, REACH.

Key Highlights

• Low-temperature performance down to -40°C
• Discharge rate >100C
• Cycle life >30,000 @2.8~4.2V
• Low internal resistance, high vibration resistance, high safety

Features

• High discharge rate and enhanced low-temperature performance: High-efficiency carrier transport; discharge rate up to 100C. Enhanced low-temperature design achieves >60% energy retention at -40°C (5C discharge).
• Low internal resistance, high vibration resistance, high safety: Full tab, hard connection and full laser welding reduce DC internal resistance and leakage risk. Directional pressure-relief design on the cell lid provides precise pressure release and prevents cascading failures.
• Excellent cycle life: 30,000 cycles @2.8~4.2V; 100,000 cycles @2.8~4.0V; >150,000 cycles @2.8~3.8V.
• Automotive-grade quality: Meets AEC-Q200 requirements and is supplied in volume to automotive and power-system industries.

Characteristics / Technical Specifications

• Type: C46W-4N2-0008
• Capacity (Ah): 8 1.0C discharge
• Median Voltage (V): 3.7
• Internal Resistance (mΩ): ≤0.8 @25°C, 50% SOC, 1KHz AC
• Charge Cut-off Voltage (V): 4.2
• Discharge Cut-off Voltage (V): 2.8 @25°C
• Max Continuous Charge Current (A): 190 @25°C, 50%SOC, 30s
• Max 10s Charge Current (A): 280 @25°C, 50%SOC
• Max Continuous Discharge Current (A): 320 @25°C, 50%SOC, 30s
• Max 10s Discharge Current (A): 460 @25°C, 50%SOC
• Max 10s Discharge Power (W): 1350 @25°C, 50%SOC, 10s
• Weight (g): 315
• Operating Temperature (°C) Charge: -35~+55
• Operating Temperature (°C) Discharge: -40~+60
• Storage Temperature (°C): -40~+60
• External Terminal: Weldable
• Height (mm): 95
• Diameter (mm): φ46