Prismatic vs. Round Batteries: How We Increased Capacity for Smart Watches

What is a Prismatic Battery?

A prismatic cell is a type of LiPo battery distinguished by its rectangular or square form. Unlike tubular cylindrical cells, prismatic lithium cells feature a flat, stackable structure where the electrode materials are arranged in layered sheets and housed in a robust metal casing for strength and protection.

One key challenge with prismatic cells was their fixed rectangular shape, which offered little flexibility for the curved, space-efficient design our client required. The rigid casing and limited form factors made it difficult to fully utilize the watch’s compact internal space, resulting in wasted volume and restricted battery capacity.

Because prismatic cells couldn’t conform to the sleek contours of the smartwatch housing, the client turned to us for a custom-shaped LiPo solution that maximized energy density while perfectly fitting the unique design.

Custom Round Batteries: Maximizing Space and Capacity for Smartwatches

Understanding that our client prioritized fully utilizing the smartwatch’s compact internal space and maximizing battery capacity, we designed a custom round lipo battery tailored specifically to the device’s interior geometry.

Unlike standard prismatic cells, this round design allowed the battery to conform precisely to the curved contours of the watch, eliminating wasted space and ensuring every millimeter of internal volume contributed to energy storage.

Our bespoke battery featured high energy density, carefully engineered electrode layers, and an optimized form factor to fit snugly within the watch’s limited interior. This precision fit not only increased the overall battery capacity but also maintained the device’s slim and ergonomic profile, addressing the client’s challenge of balancing compact design with longer runtime.

By designing the battery to follow the exact shape of the watch housing, we were able to transform previously unusable space into functional capacity, giving the client a tangible performance advantage without requiring changes to the device’s design.

This custom round lipo solution demonstrates how tailored battery design can directly solve critical device constraints, enabling higher energy storage, better space utilization, and a seamless integration that off-the-shelf options simply cannot provide.

The Value We Bring to Our Customers

Enhanced device performance

The high energy density and precision fit of the battery significantly extended the smartwatch’s runtime, allowing end users to enjoy longer usage between charges. This improvement also supported power-hungry features, such as continuous health tracking and advanced notifications, without compromising device performance.

Optimized user experience

The increased battery capacity, combined with a slim and ergonomic profile, maintained the device’s sleek design while delivering reliable, uninterrupted performance. Users benefit from a seamless experience, with fewer charging interruptions and consistent operation, enhancing overall satisfaction and engagement.

Accelerated time-to-market

By providing a ready-to-integrate, tailored battery, our solution reduced the need for multiple iterative design modifications. This streamlined the development process, helping the client meet tight deadlines and launch their product ahead of competitors, ultimately boosting market competitiveness.

Improved aesthetic appeal

The battery’s round, form-fitting design conformed precisely to the watch’s interior curves, preserving the device’s elegant look and supporting the overall design vision. The harmonious integration of the battery allowed designers to focus on other aesthetic elements, ensuring the final product remained visually appealing while delivering superior functionality.

Conclusion

This project highlights the power of custom battery design in overcoming device constraints. By precisely tailoring the battery to the smartwatch’s interior, we were able to maximize energy storage, optimize space utilization, and maintain a sleek, ergonomic profile. The result is a solution that not only elevates device performance and user experience but also accelerates time-to-market and preserves design aesthetics. Custom batteries, when engineered thoughtfully, become more than just a power source—they are a key enabler of innovation and competitive advantage.

Ready to transform your device with a custom battery solution? At LanDazzle, we specialize in designing high-performance LiPo batteries tailored to your product’s unique needs. Contact us today to discuss your project, explore possibilities, and take your device to the next level.

Email: info@landazzle.com
Whatsapp: +8618938252128