2.4V Ni-Cd Emergency Lighting Battery D4000mAh High Capacity

Features

1. High Capacity Design: 4000mAh provides extended runtime for emergency systems

2. Optimized for Float Charging: Specifically designed for continuous standby operation

3. Wide Temperature Range: Reliable performance from -20°C to 60°C

4. Long Cycle Life: 500+ cycles with proper maintenance

5. Low Self-Discharge: Excellent charge retention during standby

6. Maintenance-Free: Sealed construction requires no watering

7. Overcharge Tolerant: Withstands continuous float charging conditions

Specifications

Application

• Emergency Lighting Systems: Maintained and non-maintained emergency luminaires.

• Exit Signs: LED and incandescent exit signage.

• Central Battery Systems: Small-scale emergency power units.

• Security Lighting: Emergency backup for security systems.

• Fire Safety Equipment: Emergency power for fire alarm systems.

• Emergency Exit Lights: Self-contained emergency lighting fixtures.

Warnings & Precautions

Installation Precautions

• Ensure correct polarity during installation

• Check battery compartment dimensions and terminal type

• Secure battery properly to prevent movement

• Use only in UL-listed emergency lighting equipment

Charging Precautions

• Float Charge Voltage: Maintain 2.8V-2.9V for continuous operation

• Temperature Monitoring: Charge between 0°C and 45°C only

• Never use fast chargers not designed for emergency lighting applications

Storage & Handling

• Storage Temperature: -20°C to 35°C

• Charge State: 40-50% capacity for long-term storage

• Recharge Interval: Every 6 months during storage

• Environment: Cool, dry, and well-ventilated area

Shenzhen Manli Technology Co., Ltd. is a high-tech manufacturing enterprise specializing in the R&D, production, and sales of lithium batteries.
The product portfolio encompasses a wide range of battery types, including high-capacity, low self-discharge, power-type, and high/low-temperature variants. These products are widely utilized in various smart drones, model aircraft, emergency power supplies, lighting fixtures, toys, smart home appliances, and other consumer electronics. The company possesses comprehensive R&D, design, and manufacturing capabilities, a robust quality management system, as well as testing facilities for battery performance and safety compliance. We are fully equipped to meet customers' personalized and diverse needs with tailored solutions, delivering cost-effective and reliable battery products. Our battery products have obtained third-party certifications such as UL, CE, KC, CCC, BIS, CB, PSE, REACH, ROHS, and UN38.3.
We aspire to collaborate with like-minded partners worldwide, leveraging advanced battery technology to strive for a greener, smarter, and more sustainable future.