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What is ni cad batteries cells?

Nickel-cadmium batteries are DC voltage sources. It is replacing lead-acid batteries and has become increasingly popular in recent years because of its characteristics and advantages. It is small and compact and can be easily moved from one place to another. The general uses of this type of battery are toys, calculators, small DC motors, and so on. The principle is the same as that of the lead storage battery. The metal is coiled with cadmium and a barrier layer and kept in a redox state so that the chemical reaction produces a DC voltage. Batteries have been popular for a long time and more and more chemical elements are used in order to increase their efficiency. This has resulted in a compact structure.


Nickel-cadmium batteries cells convert chemical energy into electrical energy when discharging, and convert electrical energy back into chemical energy when charging.

Nickel-cadmium batteries are secondary batteries because the chemical reaction is reversible, so the battery can also be recharged.

The cathode (positive plate) of a nickel-cadmium battery is made of nickel hydroxide, and the anode (negative plate) of the electrode is made of metal cadmium.

An alkaline aqueous solution is used as the electrolyte between the two electrodes.

Advantages of Ni-Cad Batteries

1. Long life. This nickel-cadmium battery can provide over 500 charge and discharge cycles, with a lifespan almost equal to the lifespan of the device using the battery.

2. Excellent discharge performance. In the case of large current discharge, nickel-cadmium batteries have the characteristics of low internal resistance and high voltage discharge, so they are widely used.

3. Long storage period. Nickel-cadmium batteries have a long storage life, few restrictions, and can be charged normally after long-term storage.

4. High rate charging performance. The nickel-cadmium battery can be quickly charged according to application needs, with a full charge taking only 1.2 hours.

5. Wide temperature adaptation range. Ordinary nickel-cadmium batteries can be used in high or low temperature environments. High-temperature batteries can be used at temperatures of 70 degrees Celsius or higher.

6. The safety valve is reliable. The safety valve is maintenance-free. Nickel-cadmium batteries can be used freely during charging, discharging or storage. Due to the special material used in the sealing ring and the role of the sealant, nickel-cadmium batteries rarely leak.

7. Wide range of applications. Nickel-cadmium battery capacity ranges from 100mah to 7000mah. There are four commonly used types: standard type, consumer type, high temperature type, and high current discharge type. It can be applied to any wireless device.

8. High quality and high reliability. Nickel-cadmium batteries are manufactured under very strict quality management and have excellent quality dependence.

9. Long duration: flat discharge characteristics (but drops rapidly at the end of the cycle)

10. Easy to install: Battery clip makes installation easy

11. Reliability: Our nickel-cadmium battery packs have an expected life of more than 5 years; our lithium iron phosphate battery packs have an expected life of more than 10 years; our batteries comply with ICEL 1010, IEC 60598, IEC 61951, IEC 61960, IEC 62133 and UN38.3 standard.

We Are China Ni-Cd Battery Manufacturer and Suppliers and exit sign battery manufacturers and LiFePO4 Battery Packs, If You Need, Welcome To Contact Us To Know More.

Ni-Cad Batteries Voltage

It is a device that produces a DC voltage based on a chemical reaction between related substances. In a nickel-cadmium battery, reduced oxide material is used as a substrate, around which a nickel layer and a diaphragm are used. The voltage of a NiCd battery is about 1.2 V. When connected in series, 3 to 4 cells are usually assembled together to obtain an output of 3.6v to 4.8 V.

Typically, NiCd cells have a voltage of about 1.2 V each, and multiple cells are connected in series or parallel to obtain the desired voltage. In addition to the voltage, the specific energy is about 50-60 Wh/Kg. This is slightly higher than NiFe batteries, but relatively lower than NiZn and NiMH batteries.

The specific power is 200 Wh/kg. this is slightly higher than NiFe batteries, but relatively lower than NiZn and NiMH batteries. For nickel metal batteries it is around 170-1000. nickel-iron batteries are around 100. Energy efficiency is around 70-75%. This is slightly higher than nickel-iron batteries, but relatively lower than nickel-zinc and nickel-metal hydride batteries. For nickel metal batteries, it is around 70-80%. For nickel-iron batteries, it is around 60-70%.

Nickel Cadmium Battery Types

Nickel-cadmium battery classification is only done based on size and available voltage. Based on size it may be of AAA, AA, A, Cs, C, D, or F size. All these sizes come with different output voltage specifications. Some of them are cylindrical pipe-shaped and some of them are in a rectangular box-shaped outer case.

Are Ni Cd batteries rechargeable?

The nickel-cadmium battery (Ni-Cd battery or NiCad battery) is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes. A Ni-Cd battery has a terminal voltage during discharge of around 1.2 volts which decreases little until nearly the end of discharge.

Ni-Cd Battery Properties

Constant high-temperature operation

Temperature depending on the used emergency lighting unit (refer to respective emergency control gear data sheet)

Good charging properties at high temperature

High energy maintenance of the charged battery

Certified quality manufacturer

Casing material made of polycarbonate

Ni-Cd Battery Application:   

1. Lighting: Nicd Battery For Exit Signs, emergency lighting, emergency power supply, solar lights, searchlights, flashlights 

2. Power tools: electric drills, planers, saws, power granted

3. Electronic toys: remote control car, remote control boats, aircraft, model aircraft

4. Communication equipment: cordless phones, walkie-talkie

Nickel Cadmium Exit Sign Battery

LED Emergency and Exit Lights contain a Ni-Cd battery inside the unit. The first step in determining the functionality of an exit or emergency light is to perform a push-button test of the light. A button is located on the bottom or side of the emergency/exit light that, when pressed, activates the back-up battery system. You can determine if the battery needs to be replaced by holding the button down for at least 30 seconds. The problem with this preliminary test is that NiCad batteries discharge at 100% power until the very last moments of the battery's life. To clarify, if a Ni-Cd battery is down to 15% of its life, it will still discharge at 100% power as if it's fully charged. Therefore, to ensure that all emergency and exit lights in the facility are discharged for at least 90 minutes, it is recommended that the batteries be replaced every 3 years.

Find your emergency lighting/Exit sign battery pack at Battery Hub, from 1.2v-14.4v battery packs in all shapes and configurations available.

Godson Technology Co., Ltd. is a globally trusted supplier and manufacturer of emergency lighting battery, emergency lighting products, E-bike battery and power tool battery, whose batteries range covers Ni-Cd, Ni-MH, LiFePO4, Lead Acid, Lion-polymer and other relevant lithium batteries.

Buy our rechargeable NiCD batteries to replace batteries in standard electronic equipment, emergency lighting and exit signs, solar lighting and more.

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