In early 2025, a European startup approached LYW-batteri with a unique challenge—developing a lightweight, compact, and long-lasting battery for their upcoming AI-powered smart translation device. The product was set to launch at the summer tech expo and required strict design and performance standards.
🔍 The Challenge
The client’s requirements included:
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Battery capacity: At least 1000mAh to support 6+ hours of continuous voice translation
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Size constraints: The housing allowed no more than 5mm thickness
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Weight limit: Less than 20g to ensure user comfort during handheld use
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Charging time: Full charge within 1.5 hours via USB-C
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Safety: Certified for air shipment and CE/UN38.3 compliant
Other suppliers had proposed standard models that failed to meet either size or performance needs. That’s where our custom solution came in.
🔧 The Solution
Our engineering team at LYW-batteri proposed a custom 1200mAh LiPo battery, using a slim 3.7V pouch cell with optimized energy density and enhanced fast-charging capability.
Key features we delivered:
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Thickness: only 4.8mm, precisely within tolerance
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Cycle life > 500 times, ensuring longevity for frequent users
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Custom connector and protective PCM, perfectly matching the client’s PCB
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Passed UN38.3 and IEC62133 tests, ready for global shipment
We provided 3D CAD drawings, prototype samples, and mass production molds within 3 weeks.
✅ The Results
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The client successfully launched their product on time, receiving positive feedback for battery life and portability
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Return rate: < 0.2% after 10,000 units shipped
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The startup is now working with us on their next-generation translator and wearable products
📦 Custom Battery Solutions That Fit Your Vision
Vid LYW-batteriär vi specialiserade på polymer lithium battery customization from 100mAh to 2000mAh. Whether you’re building wearables, medical devices, or smart electronics, we offer tailor-made battery packs that meet your design, safety, and performance goals.
👉 Contact us today to bring your idea to life with a reliable power source.
