Why OEM battery programmes need clearer development routes

Finding the right starting point

In our time working with OEMs to manufacture their battery packs, we see projects beginning from very different starting points. Some OEMs already have a validated battery design and are looking for a manufacturing partner. Others are beginning with product requirements but have no battery architecture in place. In some cases, OEM teams may choose to trade some design flexibility for a faster route to development.

Treating all of these scenarios as the same type of battery project can lead to confusion around scope, lead time and investment. Engineering and procurement teams may find themselves navigating early development decisions without a clear view of the implications for cost, compliance and long-term manufacturing.

A common problem with OEM battery programmes

At Alexander Battery Technologies (ABT), we often encounter OEMs facing the same problem. When the path for battery development is not clearly defined at the outset, projects can become harder to scope. Engineering and procurement teams may struggle to judge how much development work is required, what level of flexibility is needed and how quickly the programme can move towards manufacture. This creates uncertainty early in the programme and increases the risk of delays, rework and unexpected development costs.

This has led us to structure our services around four routes into battery pack manufacture. The aim is to help OEM teams align their development approach with the stage their programme has already reached.

Rather than forcing every programme into the same model, the framework reflects the reality that battery development is shaped by what an OEM already has in place, what still needs to be defined and how quickly the programme needs to move. This can vary greatly from one programme to the next.

Different starting points, different routes

When a product concept is already clear, but the battery pack has not yet been developed, a design-led route may be the right fit. Where ABT already has a suitable battery architecture to build from, development can be based on an established foundation, helping to reduce early-stage non-recurring engineering costs.

For OEMs with an existing validated design, the requirement is likely to focus on finding a battery manufacturing partner that can manufacture and deliver reliably, with appropriate controls in place, at a cost and lead time that meet commercial requirements.

Why clarity matters early on

Battery programmes can become more difficult than they need to be when the route into development is not clearly defined from the outset. Teams may underestimate the level of design work required, assume a faster path to production than is realistic, or expect certain testing and compliance support to be included as standard. This can create a gap between what is expected and what is needed to move the programme forward.

A clearer route helps engineering and procurement teams to plan realistically and avoid surprise costs or delays further down the line.

A more structured approach

Mark Rutherford, chief executive officer at Alexander Battery Technologies (ABT), said:

“OEM battery programmes hardly ever follow a single, linear path. Some teams need to move fast using proven designs, others need room to adapt as their product evolves and many are managing existing platforms alongside new development. Treating all of that as a single type of project creates friction and delay.

“What we’re seeing is a need for clearer decision points much earlier in the process. Making those routes explicit allows engineering and procurement teams to understand the implications of their choices on cost, compliance and timescale before they are committed.”

At ABT, the four routes range from our Core and Core+ service offerings which involve adapting established battery architectures to meet OEM requirements; through to our TotalCustom service which is a full end-to-end custom battery development. These design-to-manufacture services sit alongside our option for build-to-print battery pack manufacturing for existing designs.

This gives OEMs a more practical way to approach battery development based on the maturity of their programme, rather than treating every project as either fully custom or fully defined from day one.

At a high level, the four routes differ in how much design work is needed, how quickly a programme can move and how much flexibility the OEM requires. In practice, the right route depends on what the OEM already has in place and how the programme needs to progress.

Supporting faster progress

The fastest route to production, of course, is when a validated battery design already exists. In these cases, build-to-print programmes can move quickly into manufacture, often within weeks depending on material lead times.

However, many OEMs either do not have an existing design, or do not have access to the full data pack needed to transfer manufacture to a new supplier. In these situations, there may be an opportunity to start from technical architecture that has already been developed in-house by ABT.

Where suitable reference architectures exist, development can move faster by building on these foundations rather than starting from scratch. This can reduce initial development cost and shorten the path towards a manufacturable solution.

ABT maintains a library of existing battery architectures that can be adapted to meet OEM requirements via our Core and Core+ service routes. In many cases, these can be integrated into a custom mechanical design to provide a faster route into production. Where more extensive modification is required, the platform can be further developed to support additional customisation.

More than one route at once

Some OEMs may find that more than one route applies at the same time. An existing product may be ready for build-to-print manufacture, while a new battery pack is being developed for a future product introduction.

In these cases, it may be possible to create efficiencies through shared tooling, common components or aligned supply chain decisions, depending on the nature of the products involved.

Designing the programme, not just the battery

Rutherford added:

“The challenge for OEMs is not simply designing a battery but designing a programme that can be delivered and scaled over time. Being clear about the right development route from the outset helps teams plan more realistically around regulatory requirements, engineering effort, procurement activity and the risk of rework as products move towards production.”

For OEMs working in sectors such as UAVs, robotics, power tools and medical devices, this level of clarity makes it easier to choose an approach that fits both the product and the wider commercial reality around it.

Learn more about ABT’s battery pack design and development services, or contact us to discuss your programme requirements.