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With a nominal capacity of 1800mAh LiFePO4 Cell, this battery delivers reliable, long-lasting power to ensure emergency lighting devices function seamlessly when mains power fails. Adopting advanced LiFePO4 chemistry, it features a nominal voltage of 3.2V (mean operation voltage), a delivery voltage range of 3.20~3.3V (within 10 days from factory), and strict compliance with emergency lighting power requirements. Whether for commercial buildings, residential complexes, or public facilities, this 3.2V Emergency LED Battery stands out as a trustworthy energy source, combining stability, durability, and safety to meet the critical needs of emergency illumination.
No. | Items | Specifications | Remark | |
1 | Nominal Capacity | 1800mAh | 0.2C Standard discharge | |
2 | Minimum Capacity | 1710mAh | ||
3 | Nominal Voltage | 3.2V | Mean Operation Voltage | |
4 | Delivery voltage | 3.20~3.3V | Within 10 days from Factory | |
5 | Charge Voltage | 3.65V±0.03V | By standard charge method | |
6 | Standard charging method | 0.2C constant current,3.65V constant voltage charge to 3.65V,continue charging till current decline to ≤0.01C | Around 6hrs | |
7 | Charge current | 0.2C | 360mA | Standard charge, charge time about 6h(Ref) |
0.5C | 900mA | Rapid Charge, charge time about: 3h(Ref) | ||
8 | Standard discharging method | 0.2C constant current discharge to 2.0V, | Constant current Discharge at 0.2C to 2.0V | |
9 | Cell Internal Impedance | ≤40mΩ | Internal resistance measured at AC 1KHZ after 50% charge | |
10 | Maximum charge current | 1C | 1800mA | For continuous charging mod |
11 | Maximum discharge current | 2C | 3600mA | For continuous discharge mod |
12 | Operation Temperature and relative humidity Range | Charge | 0~55℃ 60±25%R.H. | Charge at a very low temperature such as blew 0℃,will be get a lower capacity and reduce cycle life of the battery |
Discharge | -5~60℃ 60±25%R.H. | |||
13 | Storage temperature for a long time | -20~25℃ 60±25%R.H. | Do not storage exceed half year. Must charge once when storage for half year. must charge the battery which with protect circuit when storage for three months. | |

Built with precision, the battery boasts a High Capacity LiFePO4 Battery rating of 1800mAh (0.2C standard discharge) and a minimum capacity of 1710mAh, ensuring consistent power output for extended periods. This capacity advantage means your Emergency LED Downlight can stay lit longer during power outages, providing essential visibility for safe evacuation and daily emergency needs.
The Stable Voltage Battery maintains a nominal voltage of 3.2V, delivering steady power to emergency LED lighting systems without voltage fluctuations. Its delivery voltage (3.20~3.3V) ensures the battery is ready for immediate use upon arrival, eliminating the need for pre-charging before initial installation—saving time and enhancing user convenience.
Equipped with flexible charging options, the battery supports standard charging (0.2C, 360mA) that takes approximately 6 hours, and rapid charging (0.5C, 900mA) for quick replenishment in just 3 hours. The standard charging method (0.2C constant current + 3.65V constant voltage charge until current drops to ≤0.01C) ensures thorough charging while protecting the battery’s lifespan. Additionally, it handles a maximum continuous charging current of 1C (1800mA), adapting to various charging setups.
Designed for emergency scenarios, the battery offers a maximum continuous discharge current of 2C (3600mA), enabling Emergency LED Lighting to reach full brightness instantly. The standard discharging method (0.2C constant current discharge to 2.0V) ensures stable energy release, making it ideal for high-demand emergency lighting applications that require reliable performance under pressure.
This Wide Temperature Range Battery performs exceptionally well in harsh environments: charging is feasible between 0~55℃ (60±25%R.H.), and discharging operates smoothly from -5~60℃ (60±25%R.H.). For long-term storage, it can be kept at -20~25℃ (60±25%R.H.), with simple maintenance (charge once every 6 months, or every 3 months for battery with protection circuit)—perfect for global applications across different climates.
With an internal impedance of ≤40mΩ (measured at AC 1KHZ after 50% charge), the Low Internal Impedance Battery minimizes energy loss during charging and discharging, improving overall efficiency. This low impedance ensures the battery can quickly respond to the power demands of emergency LED downlights, delivering instant illumination when needed most.
The battery meets UN 3480 Compliant Battery standards for international shipment, ensuring safe and legal transportation across borders. Its robust design and compliance with global shipping regulations eliminate logistical hurdles for businesses importing or exporting emergency lighting power solutions.
The 18650 3.2V LiFePO4 Battery is tailor-made for Emergency LED Downlight systems, serving as the core power source in commercial spaces (offices, malls, hotels), residential buildings, hospitals, schools, and industrial facilities. It ensures the downlight activates automatically during power outages, providing bright, consistent illumination to guide evacuation and maintain safety.
Beyond emergency LED downlights, this versatile battery is compatible with a range of Emergency Lighting Systems, including emergency exit signs, safety pathway lights, emergency indicator lights, and backup lighting for critical areas (data centers, control rooms). Its stable voltage and high capacity make it a universal power solution for all low-voltage emergency lighting devices.
Follow the standard charging method (3.65V±0.03V charge voltage) to avoid overcharging or undercharging.
Avoid charging at temperatures below 0℃, as this may reduce capacity and shorten cycle life.
Adhere to storage guidelines: do not store for more than 6 months without charging; charge batteries with protection circuits every 3 months.
Our 18650 LiFePO4 Battery undergoes rigorous testing to meet or exceed industry standards. Every cell is checked for capacity (minimum 1710mAh), internal impedance (≤40mΩ), and voltage stability, ensuring consistent performance across all units. We prioritize quality to deliver batteries that you can trust in emergency situations.
Unlike generic batteries, our product is engineered specifically for Emergency LED Lighting applications. We optimize key parameters—such as discharge rate, voltage stability, and temperature resistance—to align with the unique demands of emergency systems, ensuring seamless integration and superior performance.
From UN 3480 shipping compliance to voltage and safety standards, our battery meets global regulations, making it suitable for international markets. Whether you’re a manufacturer of emergency downlights or a facility manager sourcing backup power, our product eliminates compliance risks.
We provide dedicated technical support to assist with installation, charging setup, and maintenance. Our team of experts is available to answer questions about battery performance, compatibility, and storage, ensuring you get the most out of your 3.2V Emergency LED Battery.
The nominal capacity is 1800mAh (tested under 0.2C standard discharge conditions), with a guaranteed minimum capacity of 1710mAh. This ensures reliable power output for your emergency LED downlight.
The nominal voltage (mean operation voltage) is 3.2V, and the standard charge voltage is 3.65V±0.03V. We recommend following the 0.2C constant current + 3.65V constant voltage charging method for optimal lifespan.
You can choose between standard charging (0.2C, 360mA, ~6 hours), rapid charging (0.5C, 900mA, ~3 hours), or maximum continuous charging (1C, 1800mA). The standard method is ideal for regular use, while rapid charging suits urgent needs.
