3.6V 2500mAh Ni-CD Battery For Emergency Lighting With High Cost-effective

Product Specification

3.6V 2500mAh Ni-CD Battery for Emergency Lighting with High Cost-effective


Application:

Product parameters:

 

Cycle Life: ≥500 times
Standard Charge Mode: 0.1C for 16 hours

Operating Temperature: (-20℃) - (+70℃)

Storage Temperature: (-30℃) - (+60℃)

Cell Dimension: 25.8 +0 -1.0(D), 49.5±0.5(H)

Expected Life: 5 years

Packaging: Standard export package or customized package

 

Can nickel-cadmium batteries be used in emergency lighting?

Nickel-cadmium (Ni-Cd) batteries are commonly used in emergency lighting systems due to their high reliability and long cycle life. Emergency lights are crucial in situations where power outages occur, and it is essential to provide a continuous power supply for safety reasons.

In emergency lighting applications, Ni-Cd batteries are used as a backup power source that kicks in when the main power supply fails. These batteries are designed to deliver a high current quickly and efficiently, ensuring that the emergency lights can operate for an extended period.

Ni-Cd batteries used for emergency lighting systems are typically designed to have a long service life and can withstand frequent deep discharge and recharge cycles. They are also designed to operate over a wide range of temperatures, ensuring that they can function correctly in different environmental conditions.

Ni-Cd batteries for emergency lighting are available in various sizes and capacities, allowing them to be customized to meet the specific needs of a particular application. They can also be easily replaced when they reach the end of their useful life, ensuring that the emergency lighting system remains functional and reliable.

 

Product performance:
 

1. Ni-Cd battery has high charge and discharge efficiency and good safety performance at high temperature and has long service life under condition of long term floating charge, which makes it very suitable for emergency lighting application.

2. A wide range of applications. The capacity of nickel cadmium battery ranges from 100mah to 7000mah. There are four types commonly used: standard type, consumer type, high temperature type and high current discharge type, which can be applied to any wireless device.
3. Lower self-discharge rate than nickel-metal hydride(20% per month vs. 30% per month). The rate and intensity at which it happens is influenced by the environment. Colder temperatures are generally better, since the cold slows down the chemical reaction, thereby reducing any unwanted battery self-discharge.
4.Higher energy density, lighter and more compact than lead-acid batteries Ni-Cd is preferred when size and weight are critical factors, such as in aircraft

5.Lower self-discharge rate than nickel-metal hydride(20% per month vs. 30% per month)

Ni-Cd Battery Cell Performance:

1. Ni-Cd Cell Charge Curve At 0.1C For 16h At 55 Degree

2. Ni-Cd Cell Discharge Curve At 0.25C At 55 Degree

3. Ni-Cd Cell Charge Efficiency At Different Temperature

4. Ni-Cd Cell Capacity Change At Permanent Charge At 55 Degree (0.05C Floating)

5. Ni-Cd Cell Cycle Life Curve

Something to know about Ni-Cd battery:
 

One important aspect to know about Ni-Cd batteries is their susceptibility to a phenomenon known as the "memory effect" or "voltage depression." This effect occurs when Ni-Cd batteries are repeatedly recharged after being only partially discharged.

When a Ni-Cd battery is consistently recharged before being fully discharged, the battery's capacity may appear to decrease over time, and it may exhibit a reduction in voltage output during discharge. This can give the impression that the battery has lost its ability to hold a charge properly.

The memory effect arises from the formation of crystal formations on the battery electrodes, particularly on the negative electrode (cadmium). These crystals can create localized areas with reduced electrochemical activity, resulting in a decrease in the effective capacity and voltage output of the battery.

To mitigate the memory effect and maintain optimal performance in Ni-Cd batteries, it's advisable to periodically perform deep discharge cycles. This involves fully discharging the battery before recharging it. Deep discharge cycles help break down any crystal formations that may have developed and restore the battery's full capacity.

Additionally, avoiding frequent partial discharges and ensuring periodic full discharges can help prevent the memory effect from occurring or reduce its impact. However, modern Ni-Cd batteries and chargers often incorporate features to minimize the memory effect, and it's less of a concern with newer battery technologies like lithium-ion.