Millibatt Nimbus ZEA (Z-Fold Electrode Architecture):

Big Battery Energy Density in Small Battery Form Factors 

In pursuit of more energy-dense small batteries, Millibatt battery design engineers have developed a folded electrode architecture that is a game changer in energy capacity for small form factor rechargeable batteries. The innovative Nimbus Z-Fold Electrode Architecture is a structural update to traditional "space-hungry" coiled electrodes used in small batteries targeted at TWS, hearing aid, wireless IoT sensors, and other demanding battery-life critical wireless applications. 

Making TWS Earbuds Last Up to 50% Longer on a Single Charge

Internal Space Improvement = 25% More Active Battery Material

When Nimbus ZEA is used to replace
coiled electrodes

25% more capacity

Internal Space Improvement = 25% More Active Battery Material

The new Nimbus ZEA electrode architecture solves the inherent wasted internal battery space issue associated with today's popular coiled electrode designs. The Nimbus architecture uses space-efficient stacked electrodes similar to those found in EV batteries and typical high-energy cell phone batteries. Improved space utilization gives small battery designers a 20% to 25% boost in usable energy capacity compared to coiled electrode designs.

Millibatt material scientists have designed Nimbus ZEA electrodes to be flat. This architectural feature now means that Nimbus ZEA electrodes support higher active material loadings.

Flat Nimbus ZEA Electrodes = An Additional 25% Increase in Battery Run Time

Millibatt material scientists have designed Nimbus ZEA electrodes to be flat. This architectural feature now means that Nimbus ZEA electrodes support higher active material loadings. Depending on chemistry, battery designers can see an additional 25% boost in energy capacity from this innovative approach to small battery electrode design.

For battery manufacturers taking advantage of
Nimbus ZEA in coin cell battery products

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Supports High Surge Currents = 16X Longer Bluetooth Connectivity

The multiple layers of flat electrodes in small batteries built using the Millibatt Nimbus ZEA architecture have up to 8X the surface area of traditional single-layer coin cell electrode designs. This electrode surface area improvement means that batteries as small as 100 mm3 can rapidly supply the high surge currents (10-20mA) found in typical Bluetooth applications. Real-World measurements show a 16X improvement in Bluetooth connectivity time for small coin cell batteries.

Unlike coiled electrodes that only fit into cylindrical cell formats, Nimbus ZEA architecture is compatible with non-circular cell designs to deliver high power and safe batteries in various shapes for the next generation of wearable technologies.

Supports Non-Circular Battery Designs for Next-Gen Wearables

Unlike coiled electrodes that only fit into cylindrical cell formats, Nimbus ZEA architecture is compatible with non-circular cell designs to deliver high power and safe batteries in various shapes for the next generation of wearable technologies.

Learn how Millibatt’s Nimbus ZEA coin cell electrode product can dramatically extend the battery life for demanding applications such as TWS.

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