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Email：sales@enpowertec.com
Email：sales@enpowertec.com
Although lithium-ion batteries have become increasingly popular in modern cordless power tools, Nickel-Metal Hydride (Ni-MH) batteries remain an important solution for many replacement battery applications.
From cordless drills and electric screwdrivers to industrial power tools and specialized equipment, Ni-MH battery packs continue to serve customers who require reliable rechargeable power solutions and compatibility with existing equipment.
However, standard battery products cannot always meet every application requirement. Different power tools may require specific voltage, capacity, dimensions, discharge current, connectors, and housing structures.
This is where custom Ni-MH battery packs become valuable.
In this guide, we explain how custom Ni-MH battery packs are designed, what specifications buyers should consider, and how to select a reliable battery pack manufacturer for your business. For an overview of the models we supply, see our Power Tool Batteries range.
Custom Ni-MH battery packs are rechargeable battery assemblies designed according to the electrical, mechanical, and application requirements of specific power tools.
Unlike standard battery packs, customized solutions allow manufacturers to adjust cell configurations, battery dimensions, terminal structures, and electrical parameters.
A typical Ni-MH battery pack consists of:
Ni-MH rechargeable battery cells.
Electrical connecting strips and wiring.
Battery protection or control components where required.
Positive and negative terminals.
Plastic battery housing or protective enclosure.
Temperature monitoring components where required.
Depending on the application, battery packs can be designed with different cell arrangements, connection structures, and housing configurations.
Custom manufacturing is particularly useful for replacement batteries, discontinued power tool models, and OEM projects requiring specific battery specifications.
Ni-MH battery technology offers several advantages for specific power tool applications.
Ni-MH batteries generally provide higher energy density than traditional Ni-Cd batteries, allowing manufacturers to develop higher-capacity battery packs within suitable dimensional constraints.
This can help improve the operating time of compatible cordless equipment.
Unlike Ni-Cd batteries, Ni-MH batteries do not intentionally use cadmium.
This makes them a preferable option for customers seeking to avoid cadmium-related environmental concerns, although proper battery recycling is still necessary.
Many older cordless power tools were originally designed around nickel-based battery technology.
Custom Ni-MH battery packs can provide replacement solutions for compatible equipment, provided that the voltage, charging characteristics, dimensions, and electrical requirements are verified.
Ni-MH cells can be assembled into different series and parallel configurations to achieve the required voltage and capacity.
This flexibility makes Ni-MH technology suitable for a variety of industrial and commercial battery replacement projects.
Before starting a custom battery project, buyers should identify the essential technical specifications.
| Specification | Description |
|---|---|
| Battery Chemistry | Nickel-Metal Hydride (Ni-MH) |
| Rated Voltage | Depends on the required cell configuration |
| Nominal Capacity | Customized according to application requirements |
| Cell Configuration | Series and parallel combinations |
| Discharge Current | Based on motor and equipment requirements |
| Battery Dimensions | Customized to fit the equipment |
| Connector Type | Customized terminal and wiring design |
| Housing Material | Based on mechanical and environmental requirements |
| Charging Parameters | Matched to the selected cells and charger |
| Temperature Monitoring | Optional or application-dependent |
The rated voltage is determined by the number of Ni-MH cells connected in series.
A typical Ni-MH cell has a nominal voltage of approximately 1.2V.
Common battery pack configurations include:
6V Ni-MH battery pack: 5 cells in series.
7.2V Ni-MH battery pack: 6 cells in series.
8.4V Ni-MH battery pack: 7 cells in series.
9.6V Ni-MH battery pack: 8 cells in series.
12V Ni-MH battery pack: 10 cells in series.
14.4V Ni-MH battery pack: 12 cells in series.
Battery capacity is usually measured in mAh or Ah.
For example, a 7.2V 2000mAh Ni-MH battery pack has a nominal energy of approximately 14.4Wh.
Higher-capacity configurations may provide longer operating time, but cell dimensions, discharge characteristics, weight, and available housing space must also be considered.
Power tools often require significant current when starting or operating under heavy loads.
Therefore, the selected Ni-MH cells must support the required continuous and peak discharge currents.
For cordless drills and other high-power applications, manufacturers should evaluate:
Motor startup current.
Continuous operating current.
Peak load duration.
Voltage drop under load.
Temperature rise during operation.
Selecting suitable high-rate Ni-MH cells is essential for reliable power tool performance.
A professional battery manufacturer should evaluate both electrical and mechanical requirements before developing a customized battery pack.
The first step is to understand the original battery specifications.
Useful information includes:
Original battery model.
Rated voltage and capacity.
Battery chemistry.
Battery dimensions.
Connector and terminal photos.
Compatible power tool model.
Existing charger specifications.
Providing an original battery sample can make the evaluation process more accurate.
Different Ni-MH cells have different capacities, discharge rates, dimensions, and performance characteristics.
The manufacturer should select cells based on the actual application rather than capacity alone.
For power tools, discharge capability and thermal performance are especially important.
The number of cells and their connection arrangement determine the final voltage and capacity.
For example, a 7.2V Ni-MH battery pack generally uses six 1.2V cells connected in series.
Parallel connections can be considered when additional capacity is required, provided that the cell characteristics and design requirements support the configuration.
The battery housing must match the installation space and mechanical requirements of the power tool.
Manufacturers may customize:
Battery case dimensions.
Plastic housing shape.
Terminal positions.
Contact materials.
Wiring arrangements.
Mounting and locking structures.
Before mass production, prototype battery packs should be evaluated against the agreed technical requirements.
Typical evaluation items include:
Voltage and capacity testing.
Charge and discharge performance.
Internal resistance.
Continuous and peak discharge performance.
Temperature rise.
Physical dimensions.
Connector and installation compatibility.
Testing requirements should be determined according to the battery design and intended application.
Custom Ni-MH battery packs can serve different types of cordless equipment.
Cordless drills require reliable battery power for drilling and fastening applications.
Custom battery packs can be developed with suitable voltage, capacity, and discharge performance to match compatible drill models.
Electric screwdrivers are commonly used in assembly lines, workshops, and manufacturing facilities.
Battery dimensions, weight, and operating time are important considerations when developing replacement battery packs.
Cordless saws may require higher discharge current because of their demanding motor loads.
Selecting suitable cells and evaluating heat generation are important during battery pack design.
Some industrial tools and specialized equipment continue to use nickel-based rechargeable battery systems.
Custom Ni-MH battery packs can help businesses maintain equipment that is difficult to support with standard replacement batteries.
Should businesses purchase standard battery packs or develop customized solutions?
The answer depends on equipment compatibility, order volume, and application requirements.
| Comparison | Standard Battery Pack | Custom Ni-MH Battery Pack |
|---|---|---|
| Specifications | Fixed | Application-specific |
| Voltage | Available standard options | Designed to requirements |
| Capacity | Fixed options | Customizable |
| Dimensions | Standard housing | Custom housing possible |
| Connectors | Standard configurations | Custom terminal design |
| Equipment Compatibility | Limited to supported models | Designed for specified equipment |
| OEM Branding | Depends on supplier | Can be discussed |
| Development | Usually faster | Requires evaluation and sampling |
For businesses supplying replacement batteries for older or specialized equipment, customized battery packs can provide greater flexibility.
Choosing the right battery manufacturer is important for long-term product quality and supply stability.
For distributors, wholesalers, and OEM customers, consider the following factors.
Look for a manufacturer with experience in rechargeable battery pack assembly and customized battery development.
A reliable manufacturer should understand the differences between cell capacities, discharge rates, dimensions, and performance characteristics.
Check whether the supplier can customize voltage, capacity, connectors, housing structures, and battery configurations.
Ask about incoming material inspection, production monitoring, electrical testing, and final product inspection.
Sample production allows buyers to verify the design and compatibility before committing to mass production.
A professional supplier should provide technical communication, warranty terms, and support for product-related issues.
Enpower Technology Co., Ltd. specializes in rechargeable battery pack manufacturing and customized battery solutions for global customers.
We provide battery pack solutions for power tools, two-way radios, crane remote controls, barcode scanners, and other industrial equipment.
Our customization capabilities include:
Ni-MH, Li-ion, and LiFePO4 battery technologies.
Customized voltage and capacity.
Continuous and peak discharge current evaluation.
Battery dimensions and structural design.
Customized connectors and terminals.
Charging parameter customization.
Overcharge, over-discharge, over-current, and short-circuit protection where applicable.
NTC temperature monitoring and protection solutions where required.
Requirement Collection: Understand the original battery specifications and application requirements.
Solution Design: Evaluate cell selection, electrical parameters, and structural design.
Quotation: Provide a customized battery solution and quotation.
Project Confirmation: Confirm technical details and project requirements.
Sample Production: Manufacture prototype battery packs for evaluation.
Testing: Conduct electrical and structural testing according to project specifications.
Mass Production: Start production after sample approval.
Shipment and After-Sales: Complete final inspection, delivery, and after-sales support.
Whether you need replacement Ni-MH batteries for cordless drills or customized battery packs for specialized industrial equipment, Enpower can help develop a suitable solution.
Contact our team to discuss your OEM battery project.
Q1: Can Ni-MH battery packs be customized for different cordless drill models?
Yes. Ni-MH battery packs can be designed with different voltage, capacity, dimensions, connectors, and cell configurations to meet compatible cordless drill requirements.
Q2: What is the standard voltage of a Ni-MH power tool battery?
A Ni-MH cell typically has a nominal voltage of 1.2V. Common battery pack voltages include 7.2V, 9.6V, 12V, and 14.4V, depending on the number of cells connected in series.
Q3: Can I increase the capacity of an existing Ni-MH battery pack?
Potentially, yes. However, the available housing space, cell dimensions, discharge performance, weight, and charger compatibility must be evaluated.
Q4: Can a custom Ni-MH battery replace a Ni-Cd power tool battery?
In some applications, yes, but it is not automatically interchangeable. Voltage, charger compatibility, discharge characteristics, dimensions, and equipment requirements must be verified.
Q5: What information is needed for a custom Ni-MH battery quotation?
Provide the original battery model, voltage, capacity, dimensions, connector photos, power tool model, estimated order quantity, and charger information if available.
Q6: Does Enpower support OEM and wholesale battery orders?
Enpower supports customized battery pack development and manufacturing cooperation for business customers. Specific production arrangements, order quantities, and customization requirements can be discussed with our sales team.
Custom Ni-MH battery packs remain a practical solution for many cordless power tools, particularly older equipment and specialized applications that require specific replacement battery configurations.
By evaluating voltage, capacity, discharge current, cell selection, dimensions, connectors, and charging requirements, businesses can develop battery packs that better match their equipment.
For distributors, wholesalers, repair companies, and OEM customers, choosing an experienced battery manufacturer is an important step toward achieving consistent product quality and reliable supply.
Visit our website: https://www.enpowertec.com/
Contact our team for OEM/ODM battery manufacturing and customized battery solutions.
Enpower integrates R&D, production and quality testing in-house, supporting custom battery solutions for worldwide buyers.