Call for Participation - Specification Drafting for Daurema Repairable Battery

[Kevin Baeck]

Seeking Partners for a New Repairable Battery Project!

Hello everyone,

We’re excited to share that, as part of a funded project in Belgium, we are developing a new, repairable battery model tailored for mid-sized vehicles. With a power rating of 100A and robust capabilities, we’re aiming to create a high-performance, long-lasting solution—and we’re inviting other stakeholders to join us in drafting the project specifications.

Battery Details:This innovative, solder-free, IP67-rated battery will feature a capacity between 2.3 and 4 kWh, operating at 48V with a minimum power of 100A (5000W). Its final size, shape, and ergonomics are still open for development, allowing us to incorporate feedback to ensure it meets your project’s specific needs.

Our first prototype is planned for completion by the end of December.

Interested in this battery or in joining our project? Let us know!

Visit our website for more information: Daurema Batteries

 

[offGridDownUnder]

Perhaps you want to post this in the Battery Technology forum?

 

[Kevin Baeck]

Good idea !

 

[MorbidlyObeseKoala]

Curious what your relationship is to the Gouach battery project? Partners or owners or competitors?

 

[AnthonyC]

Can we have some info to raise our interest please. What's led to this prospective spec? What product benefits are you targetting aside from repairability? How will 2nd use LiIon compete with the recently improved power density LiFePo4? What's the nature of the funded project and its projected funding? And... ahem... why does the Concept page about your revolutionary weld-free technique only show welding?

 

[Kevin Baeck]

Thank you for your interest in our Daurema repairable battery project. We are excited to share more details about our initiative to develop a new, solderless battery designed specifically for intermediate vehicles.

Our project stems from extensive tests and user studies conducted in 2022 on our first version of the battery. The insights gained from these studies have guided us in defining the prospective specifications, ensuring that the battery meets the practical needs of users while pushing the boundaries of innovation in battery technology.

Beyond reparability, our battery offers several key advantages:

• Modularity: The design allows for multiple batteries to be connected in parallel, enabling users to easily increase capacity according to their requirements.
• Solderless Technology: Our revolutionary solderless approach enhances reliability and simplifies maintenance. By eliminating solder joints, we reduce potential points of failure and make the battery assembly more robust.
• Connectivity Options: We offer an optional IoT module with 4G/Bluetooth capabilities, providing real-time monitoring of charge levels, GPS positioning, and cycle counts through a dedicated app.
• Customization: Various casing options and integration formats are available to suit different vehicle types and user preferences.

Regarding the competition with LiFePo4 batteries, which have recently seen improvements in power density, our choice to use second-life Li-Ion cells is strategic. Second-use Li-Ion batteries offer several benefits:

• Environmental Sustainability: By repurposing existing Li-Ion cells, we promote a circular economy and reduce environmental impact.
• Cost-Effectiveness: Second-life cells allow us to offer a competitive price point, making advanced battery technology more accessible.
• High Energy Density: Li-Ion batteries still provide superior energy density compared to LiFePo4, which is crucial for applications where space and weight are at a premium.
• Proven Performance: Li-Ion technology is well-established, with a track record of reliability and performance that users can trust.

Our project is supported by a Belgian funding program dedicated to fostering innovation in sustainable mobility and renewable energy sectors. The funding covers research and development, prototyping, testing (including certification tests scheduled for January), and market preparation activities such as delivering development kits to interested partners starting in February.

We hope this information provides a clearer picture of our project's objectives and the value it brings. We are committed to advancing battery technology in a way that is sustainable, user-friendly, and adaptable to the evolving needs of the mobility sector.

Please feel free to reach out if you have any further questions or if you are interested in contributing to the development of our specifications.

Best regards,

 

[AnthonyC]

Thanks, here's the impression I'm piecing together which I look forward to seeing clarified.

Gouach based in Bordeaux has created a weld-free bicycle battery that can be easily repaired, and Daurema is a Belgian designer and manufacturer of repairable batteries [1]. Presumably Gouach developed the concept for the internal assembly and EU grant funding for this technology was available in Belgium. Gouach have their batteries built using their IP by Daurema but here the latter are claiming development of this one. Daurema was formed the year after Gouach and no doubt people would like to be sure that Gouach are happy with this current development by Daurema.

User studies in 2022 revealed demand for batteries for mid-sized vehicles and guided this choice of power and capacity specs and Daurema are now eliciting packaging requirements [2]. Presumably this is because mid-sized vehicles remain a small scale fast evolving category while the legal usage frameworks and demand catch up. I don't know if "joining our project" means more than raising product enquiries with packaging constraints, and two months until prototype seems late for seeking these.

[1] GOUACH Batterie vélo 48V - 12,8Ah - 599Wh - Étanche｜Réparable｜Sans soudure｜Smart - BLACKPACK50 13S4P
[2] Call for Participation - Specification Drafting for Daurema Repairable Battery
[3] Infinite: The repairable & universal Ebike battery