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Model Number : D-D4500mAh
Certification : CE,ROHS, UL,REACH,KS
Place of Origin : China
MOQ : 1000PCS
Payment Terms : L/C,T/T,Western Union
Delivery Time : 35 working days
Packaging Details : Industrial Pakcage
Name : Emergency Lighting Battery
voltage : 1.2V
capacity : 4500mAh
Size : 33.0*61.8mm (D size)
weight : 132g
Standard Charge Current : 0.1C (450mA) for 14-16 hours
Self-Discharge Rate : 15-20% per month (at 20°C)
Internal Resistance : ≤15mΩ
cycle life : 500-1000 cycles
Features
High Capacity & Energy Density: 4500mAh provides extended runtime for long-duration emergency lighting.
Exceptional Reliability: Designed for float charging and ready-state operation, perfect for emergency backup systems.
Wide Temperature Performance: Maintains operational capability in a wide range of environments, from -20°C to 60°C.
Long Service Life: Offers a robust cycle life of 500+ cycles, ensuring years of dependable service.
Low Self-Discharge: Retains charge significantly longer than NiMH batteries, ensuring readiness when needed.
Maintenance-Free Operation: When used in qualified emergency lighting fixtures with appropriate charging circuits.
Specifications
| Model | D-D4500mAh 1.2V |
| Dimension | 33.0*61.8mm (Diameter*Height) |
| Voltage | 1.2V |
| Capacity | 4500mAh |
| Iedance | <20 mΩ |
| Discharge cut-off voltage | 1.0V |
| Maximum Charge voltage | 1.4V |
| Standard charge current | 0.1C for 16 hours |
| Standard discharge current | 0.2C |
| Weight | 132g |
| Working teerature | Charge:0-70 degree |
| Discharge:-20-70 degree | |
| Storage teerature | minus 20 - 70 degree |
| Self-Discharge Rate | 15-20% per month (at 20°C) |
| Cycle life | 500-1000cycles |

Security & Alarm Systems: Backup power for security control panels, motion sensors, and magnetic locks.
Uninterruptible Power Supplies (UPS): Backup for small-scale UPS in critical low-power applications.
Industrial Control Systems: Backup power for PLCs, sensors, and safety switches.
Warnings & Precautions
Charging
Use Compatible Chargers Only. Do not use chargers designed for Li-ion or Lead-Acid batteries.
Never exceed the maximum charge voltage of 5.0V.
Avoid charging at temperatures below 0°C or above 45°C.
Discharging
Do not short-circuit the terminals. High short-circuit current can cause overheating and terminal damage.
Ensure proper ventilation around the battery during operation, especially in enclosed fixtures.
Storage
Recharge every 6-12 months during storage to compensate for self-discharge and prevent capacity loss due to sulfation.
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