Custom battery pack


Elfa can give a fitting answer to any question by offering a combination of a core range supplemented with its own production and assembly. We supply brand-independent, any battery packs, completely and exactly geared to the voltage, capacity and dimensions you desire. In large but also, small quantities, even only a couple of items. We either have it in stock, or we can produce it.

 

Table of contents

  1. Custom made battery packs
  2. Various battery types
  3. Our own production facilities
  4. Case study: Making utility vehicles more sustainable
  5. The step-by-step plan for your own battery pack

 

Custom battery pack manufacturer

In our in-house assembly department at our headquarters in Amsterdam, we produce custom-made battery packs. It may be the case that the standard range of batteries of the different brands from our range does not match your demand. A suitable solution is required, and we can offer it.

 

As a custom battery pack manufacturer, Elfa produces battery packs for specific applications. Requirements such as dimensions, capacity and connector are produced the way you want it. Also think of battery packs for emergency lighting fixtures. Elfa has been working closely with the best manufacturers in the world for years and can produce battery packs with batteries from Saft, Tadiran, Panasonic and Varta, among others.

 

Battery packs of different brands

 

We can also recreate batteries that you previously used, but which are no longer available. We can recreate these batteries into a custom battery pack. This will then fully meet the specifications you have. Elfa has been working closely with the world’s best manufacturers for years and can produce battery packs of various chemical compositions.

 

advice from our specialists

 

Various battery types

The assembly of battery packs by Elfa is done using various types of batteries, including NiCD, NiMH, Li-ion, LiFePO4, alkaline, and lithium. The battery choice depends on the application at hand. Details about the different battery packs are provided here.

 

1. NiCD

NiCd batteries perform excellently at low temperatures and are economically priced, making the cost per cycle low. The battery packs produced by Elfa are robust, fast-charging with minimal stress, and easy to store and transport without legal restrictions. NiCd battery packs are ideal for industrial and professional applications and have the following advantages:

  • High cycle life with proper maintenance;
  • Long shelf life;
  • Suitable for medical and safety applications.

 

2. NiMH

NiMH batteries (Nickel-Metal Hydride batteries) are easy to maintain due to their low memory effect. They contain no heavy metals, making them environmentally friendly. With a longer lifespan, rechargeability, and wide applicability, NiMH batteries are popular. They have 30-40% higher capacity than standard NiCd batteries and are easy to store and transport.

 

They are widely used in wireless tools, communication equipment, emergency lighting, and backup power. NiMH battery packs offer the following advantages:

  • Long lifespan and rechargeability;
  • Less sensitive to memory effect;
  • Environmentally friendly and easy to recycle.

 

3. Li-ion

For lithium-ion battery packs, a wide range of brands are used, with the Panasonic 18650 being a popular choice due to its reliability and excellent cost per kilowatt-hour. Li-ion battery packs are widely used in medical devices, industrial applications, military equipment, and robots.

 

A customized Li-ion pack can include battery holders, a PCB, PCM, BMS, cell balancing board, or other components. Li-ion packs offer the following advantages:

  • Long lifespan;
  • High energy density;
  • Low self-discharge;
  • No memory effect;
  • High power.

 

Custom battery packs

 

4. LiFePO4

LiFePO4 battery packs require no maintenance thanks to the integrated Battery Management System. They can be mounted in any position and do not need ventilation. They can be 100% deeply discharged and have a lifespan five times that of lead-acid batteries.They are often used in electric vehicles, energy storage, medical equipment, emergency lighting and backup systems.

 

LiFePO4 battery packs perform well at low temperatures and are non-flammable, environmentally friendly, and lightweight. Other advantages include:

  • Maintenance-free and flexible mounting;
  • 100% deep discharge possible;
  • High energy density and long lifespan;
  • Lightweight and safe;
  • Usable in extreme temperatures from -45°C to +70°C.

 

5. Alkaline

Alkaline battery packs are known for their durability and reliability, ideal for devices that require a constant stream of energy, such as smoke detectors and medical equipment. Made from zinc and manganese dioxide, alkaline batteries provide long-lasting energy and a longer lifespan compared to zinc-carbon batteries.

 

They are often used in smoke detectors, audio equipment, emergency lighting, and flashlights. They maintain a strong market position due to several advantages:

  • Long lifespan and cost-effective;
  • Consistent energy supply, essential for professional applications;
  • Low risk of leakage, making them safe in critical environments;
  • Environmentally friendly, without harmful metals like lead or cadmium.

 

6. Lithium

Lithium battery packs use lithium metal or lithium compounds as anodes and are known for their high energy density, ideal for compact, energy-intensive devices. They perform well at both very low and very high temperatures. With a higher voltage per cell (about 3.6V), they deliver more energy than standard alkaline batteries. Lithium batteries are designed to be discarded after discharge.

 

They are used in military applications, IoT devices, portable tools, and medical equipment. The benefits of lithium battery packs include:

  • Long lifespan with low self-discharge rate;
  • High energy density for more energy in a smaller space;
  • Reliable at extreme temperatures;
  • Constant voltage for reliable performance;
  • Lightweight, ideal for portable devices.

These features make lithium battery packs ideal for use in a wide range of applications where reliability and efficiency are crucial.

I will gladly advise you

Eric van de Laar van Elfa

Eric van de Laar

Sales & Business Unit Manager

Do you have a question?
Feel free to email or call me!

Custom battery pack assembly

Our custom battery pack assembly (in Lijnden), is according to strict procedures and safety regulations. Hundreds of packs are made here every week.

 

In order to guarantee the necessary capacity, Elfa has more than one battery pack assembly locations. In addition, we have various partnerships with multiple battery manufacturers across Europe. As a result, we always have sufficient capacity, no order is too large.

 

ISO 9001 certificering                 ISO 14001 certificering

 

Download ISO 9001                    Download ISO 14001

 

Elfa is certified under ISO 9001 and ISO 14001

 

 

Case study: Making utility vehicles more sustainable

In September 2023, Elfa entered into a partnership with Tech Innovators BV to convert diesel-powered industrial vehicles to electric propulsion. For this, Elfa supplied modular LiFePO4 battery modules that integrated perfectly with the existing systems, enabling a smooth transition. This progressive approach resulted in:

  • Reduction of operational costs;
  • Reduction of environmental impact;
  • >Reduction of CO2 emissions.

 

LiFePO4 modules for utility vehicles

 

Thanks to this successful collaboration, Tech Innovators BV has positioned itself as a leader in sustainable technology, with ambitious plans to roll out these solutions on a larger scale and inspire other sectors with their sustainability strategy.

 

The step-by-step plan for your own battery pack

To request a customised battery pack, we use a simple step-by-step plan.

 

Option 1: Send sample pack

Send us a sample of the desired battery pack to make the process as fast and accurate as possible (e.g. for the connector or dimensions). Before sending the sample pack, please register your request at: [email protected]. In addition, please include the following details:

  • Contact name
  • Telephone number
  • Customer reference
  • Number of packs

Then send the pack, stating your reference, to Elfa.

 

Option 2: Photos and specifications

If sending the sample pack is not possible, please send:

  • 3 photos of the battery pack
  • 3 photos of the connector
  • 3 specifications (incl. legible label)

Send this with your details to [email protected].

 

Option 3: Enter specifications

If options 1 & 2 are not possible, draft an email with all specifications and contact details and send it to [email protected]. Any questions? Contact us by mail or phone.

 

More info on custom battery packs

Do you have any further questions or would you like more information on our custom battery pack assembly? Please contact us! We are happy to help you and answer all your questions. The easiest way is to fill in the contact form below. We will contact you as soon as possible.

 

Unfortunately, Elfa only supplies to business customers. Therefore, we kindly ask you to have your electrical installer contact us. This way, we can still assist you. Thank you for your understanding.

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