Norda 21700 4500mAh Lithium Cell

The Norda 21700 4500mAh Lithium Cell is a rechargeable NMC lithium-ion cell designed for battery pack applications where good capacity and reliable discharge performance are important.

With a 3.7V nominal voltage, 4500mAh capacity, and 3C continuous discharge rating, this 21700 cell can be used for applications such as e-scooters, e-bikes, power tools, portable power stations, robotics, and other custom battery packs.

It is supplied as a bare lithium cell, so it needs to be assembled into a suitable battery pack with the correct BMS and charging system.

Product Overview

The Norda 21700 4500mAh cell follows the standard 21700 cylindrical battery format. The larger 21700 size provides more capacity than many 18650 cells while still fitting a widely used cylindrical-cell format.

Here is what the name tells you:

• Norda – Brand
• 21700 – Cylindrical cell size
• 4500mAh – Rated capacity
• 3.7V – Nominal voltage
• NMC – Lithium-ion chemistry
• 3C – Continuous discharge rating

This is a bare battery cell, not a complete battery. It does not include a charger, protective enclosure, or built-in BMS. Multiple cells can be connected in series and parallel to achieve the required voltage and capacity, with a suitable BMS added for protection and monitoring.

Key Features

• 4500mAh rated capacity
• 3.7V nominal voltage
• 4.2V full-charge voltage
• NMC lithium-ion chemistry
• 3C continuous discharge rating
• Approximately 13.5A continuous discharge
• Internal resistance of ≤21mΩ (AC)
• Listed cycle life of 800+ cycles
• 21700 cylindrical format
• Approximate dimensions of 21.7 × 70.5mm
• Suitable for rechargeable battery pack applications

Key Benefits

High Capacity in a Standard 21700 Format

With a rated capacity of 4500mAh, this cell can help battery pack builders achieve the required capacity without using as many cells as lower-capacity alternatives.

Useful Continuous Discharge Capability

The 3C rating corresponds to approximately 13.5A continuous discharge for a 4500mAh cell. When multiple cells are connected in parallel, the available current increases according to the number of parallel cells.

Easy Energy Calculation

A single cell provides approximately:

3.7V × 4.5Ah = 16.65Wh

This makes it straightforward to estimate the energy available from a complete battery pack.

Common 21700 Format

The 21700 format is widely used for custom battery packs. Compatible holders, nickel strips, pack components, and assembly equipment are readily available for this cell format.

Technical Specifications

Technical note: Peak discharge capability, storage temperature, and detailed cycle-life test conditions should be confirmed against the applicable datasheet before publishing them as final specifications.

Applications

The Norda 21700 4500mAh cell can be considered for a range of rechargeable battery applications, including:

• E-scooter battery packs
• E-bike battery packs
• Power tool battery packs
• Portable power stations
• Robotics and drones
• Consumer electronic equipment
• Medical equipment
• Flashlights
• Industrial battery packs
• Custom lithium-ion battery assemblies

For high-current applications, the required continuous and peak current should be calculated before selecting the number of cells in parallel.

Battery Pack Configuration

The final voltage and capacity of a battery pack depend on how the cells are connected.

For example, a 13S configuration provides:

13 × 3.7V = 48.1V nominal

At full charge:

13 × 4.2V = 54.6V

If the pack is configured as 13S4P, it uses:

• 13 cells in series
• 4 cells in parallel
• 52 cells total
• Approximately 18Ah capacity
• Approximately 866Wh nominal energy

The actual pack design should always be selected according to the required voltage, capacity, current, BMS specifications, charger, and application.

Battery Pack Assembly & Safety Guidelines

When building a battery pack with Norda 21700 cells, proper assembly practices are essential.

• Use a BMS suitable for the final pack voltage and current requirements.
• Do not charge a cell above 4.2V.
• Do not discharge a cell below the specified 2.75V cut-off.
• Follow the recommended charging temperature range.
• Use suitable spot-welding equipment and nickel strip for cell interconnections.
• Avoid excessive heat on the cell body during assembly.
• Do not use damaged, swollen, leaking, or physically compromised cells.
• Use cells of the same model and, where possible, the same batch for pack assembly.
• Match cell voltage before connecting cells together.
• Make sure the charger is compatible with the battery chemistry and final pack configuration.

Important: Lithium-ion cells can be hazardous if incorrectly assembled, charged, discharged, short-circuited, or physically damaged. Battery packs should be assembled by trained personnel using appropriate safety procedures.

Why Choose Yati Infotech Solution?

Yati Infotech Solution Pvt. Ltd. supplies lithium battery cells and battery-pack assembly products for different applications.

For the Norda 21700 4500mAh cell, customers can contact Yati with their required quantity and application details to discuss suitable pack configurations, pricing, and availability.

Bulk buyers and battery-pack manufacturers can contact the Yati team for current commercial terms.

Frequently Asked Questions

What is the Norda 21700 4500mAh lithium cell?

It is a rechargeable NMC lithium-ion cell in the 21700 format. It has a rated capacity of 4500mAh, a nominal voltage of 3.7V, and a listed 3C continuous discharge rating.

What does 21700 mean in a lithium battery cell?

21700 is a cylindrical cell size designation. The cell is approximately 21.7mm in diameter and 70.5mm long. Battery holders, cases, and pack components should be selected specifically for the 21700 format.

What does 3C mean on a 21700 cell?

The C-rating relates the discharge current to the cell's capacity.

For a 4500mAh cell:

1C = 4.5A

Therefore:

3C = 13.5A

This is the listed continuous discharge rating for the cell.

Is the Norda 21700 4500mAh cell an NMC battery?

Yes. The supplied specifications describe it as an NMC lithium-ion cell, using nickel-manganese-cobalt chemistry.

What are the voltage and capacity of this cell?

The cell has:

• 4500mAh rated capacity
• 3.7V nominal voltage
• 4.2V full-charge voltage
• 2.75V listed discharge cut-off

Its nominal energy is approximately 16.65Wh.

How should the Norda 21700 4500mAh cell be charged?

Use a compatible lithium-ion charging system designed for NMC cells with a 4.2V charge limit per cell.

The supplied specifications list a standard charge current of 0.2C (900mA) and a maximum charge current of 1C (4.5A).

When the cells are assembled into a pack, the charger and BMS must match the complete pack configuration.

What is the maximum continuous discharge current?

The listed continuous discharge rating is 3C, which works out to approximately 13.5A per cell.

For applications requiring more current, additional cells can be connected in parallel, provided the complete pack is designed correctly.

How many cycles can the Norda 21700 4500mAh cell provide?

The supplied specification lists a cycle life of 800 cycles or more.

Actual cycle life can vary depending on charging conditions, discharge depth, operating temperature, current, storage conditions, and BMS settings.

Can this cell be used for e-scooters and e-bikes?

Yes. The cell can be considered for e-scooter and e-bike battery packs, provided its current capability, capacity, voltage, physical dimensions, and operating conditions are suitable for the particular design.

Can this cell be used in power tools?

It can be used for suitable power-tool battery pack designs. The required continuous and peak current should be compared with the cell's discharge capability before building the pack.

How many 3.7V cells are required for a 48V battery?

A 13S configuration provides approximately 48.1V nominal:

13 × 3.7V = 48.1V

At full charge, the same configuration reaches approximately:

13 × 4.2V = 54.6V

The number of parallel cells depends on the required capacity and current.

Does the Norda 21700 cell have a built-in protection circuit?

No. It is supplied as a bare cell. A battery pack made with these cells requires a suitable BMS for functions such as overcharge, over-discharge, overcurrent, and short-circuit protection.

What does A-grade mean for a 21700 lithium cell?

“A-grade” is commonly used as a seller or market description and does not, by itself, establish a universal quality standard.

For a more meaningful evaluation, check the manufacturer's or supplier's available information for capacity, internal resistance, discharge capability, cycle-life conditions, and other relevant specifications.

Are reviews available for the Norda 21700 4500mAh cell?

No customer reviews have been provided in the supplied content for this product page.

For technical evaluation, buyers should compare available datasheet information with the requirements of their battery-pack design.

Is the Norda 21700 4500mAh the same as the DMEGC 21700 45E?

No. They are different cells from different brands, although both are listed as 4500mAh NMC 21700 cells.

Their specifications can differ in areas such as internal resistance, weight, discharge performance, and test conditions. Always compare the relevant datasheets before selecting a cell for a particular pack.

Where can I buy Norda 21700 4500mAh lithium cells?

You can contact Yati Infotech Solution Pvt. Ltd. for current pricing, availability, MOQ, and bulk-order requirements.

What is the price of the Norda 21700 4500mAh lithium cell?

The current selling price can vary depending on quantity and commercial terms.

Contact Yati Infotech Solution for the latest price and bulk quotation.

Get a Quote for Norda 21700 4500mAh Cells

Looking for Norda 21700 4500mAh lithium cells for an e-bike, e-scooter, power tool, portable power station, or custom battery project?

Share your required quantity and application with Yati Infotech Solution Pvt. Ltd. and request the latest pricing and availability.

Need bulk quantities? Contact Yati for a quotation.