Description
The HRL634WF2 is a high-rate sealed lead-acid (VRLA AGM) battery module designed for UPS systems and emergency backup applications. It belongs to the CSB HRL series, which is engineered for high discharge performance and long service life. The battery delivers stable 12V-class backup power with low internal resistance, making it suitable for critical systems requiring fast energy delivery during a power failure.
Key Features
• High-rate discharge VRLA AGM technology
• Maintenance-free sealed construction
• Stable and reliable 12V backup performance
• Low internal resistance for fast power delivery
• Designed for UPS and emergency power systems
• Spill-proof and vibration-resistant structure
• Rechargeable with long standby life
• Strong short-burst discharge capability
• F2 faston terminal compatibility (6.3 mm)
• Industrial-grade reliability for continuous standby use
Specifications
- Product Type: Sealed Lead Acid (VRLA AGM) Battery
- Model: HRL634WF2
- Nominal Voltage: 6V (dual 6V cells used in series for 12V systems)
- Capacity: 9Ah (20-hour rate)
- Chemistry: Lead Acid (AGM – Absorbent Glass Mat)
- Terminal Type: F2 Faston (6.3 mm)
- Dimensions: ~151 × 34 × 94 mm (single 6V unit)
- Weight: ~1.3–1.4 kg (per unit
- Internal Resistance: ~10 mΩ (low-resistance, high-rate design)
- Charge Voltage (Standby): 6.75 – 6.9 V per unit
- Charge Voltage (Cycle): 7.2 – 7.5 V per unit
- Max Discharge Current: Up to ~130A (short burst, per unit)
- Operating Temperature: -15°C to +50°C
- Application: UPS systems, emergency lighting, telecom backup systems, security systems, industrial control equipment

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