Product Specification

High Energy 4000mAh Nicd Battery Packs 2.4V EN60598-2-22 For Annunciator

Features

1. High Reliability & Long Cycle Life: Designed for ≥500 charge-discharge cycles (per IEC 61951-2) while maintaining over 80% of its initial capacity, ensuring long service life in critical applications like annunciators .

2. Robust Performance in Extreme Temperatures: Can operate effectively in a wide temperature range (-20°C to +60°C), making it suitable for harsh environments where annunciators might be deployed .

3. High Discharge Capability: Supports high discharge currents , which is beneficial for powering annunciators and other emergency devices that may require high audible output.

4. Memory Effect Resistance: While NiCd batteries can experience memory effect, it is less pronounced than in older formulations and can be managed with proper maintenance .

5. Compliance with Safety Standards: Specifically designed to meet EN60598-2-22 , which pertains to emergency lighting standards, indicating suitability for safety-critical applications like annunciators.

Specifications

Applications

• Annunciators & Alarm Systems: Audible and visual warning devices for fire, security, and industrial hazards.

• Emergency Lighting: Exit signs, emergency luminaires (compatible with EN60598-2-22) .

• Security Systems: Access control panels, backup power for security sensors.

• Industrial Control Systems: Backup power for PLCs, sensors, and critical control units.

• Other Safety Equipment: Various devices requiring reliable backup power.

Warnings & Precautions

Charging

• Use a NiCd-Specific Charger: Always use a charger designed for NiCd chemistry and configured for this battery's voltage (2.4V) and current limits. 

• Avoid Overcharging: While tolerant, excessive overcharging can damage the battery. Use chargers with proper termination methods (e.g., -ΔV, timer) for fast charging. 

• Temperature Monitoring: Charge only within the specified temperature range (0°C to +45°C). Charging outside this range can reduce capacity and cause damage .

Discharging

• Avoid Deep Discharge: Stop using the battery before reaching the cut-off voltage (2.0V for the pack, or 1.0V per cell).

• Temperature Management: Avoid discharging outside the recommended temperature range (-20°C to +60°C). Extreme cold reduces performance; extreme heat accelerates aging .

• Prevent Short Circuits: Never allow the positive (+) and negative (-) terminals to connect directly. Short circuits can cause very high currents, leading to extreme overheating, terminal damage, leakage, or fire .

Storage

• Storage State: For long-term storage (longer than a few months), it is often recommended to store NiCd batteries in a fully discharged state .
• Cool and Dry Environment: Store in a cool, dry place away from direct sunlight, moisture, and heat sources. The ideal storage temperature is between -20°C to +35°C .
• Regular Refreshing: If stored for extended periods (e.g., >10 months), perform a full charge/discharge cycle every 10 months to maintain battery health .