# Full-Tab Small Cylindrical Batteries Enter a New Phase as Capacity Expands

Ampace has announced that capacity for its JP40 series has reached the hundred-million-unit level, while Renergy New Energy said its second winding and assembly line at its Changzhou base has officially entered mass production, signaling a capacity and technology push in full-tab small cylindrical batteries\.

By China EV Signal
Published: 2026-10-08T00:17:36.643Z
Updated: 2026-10-08T00:17:36.645Z
Canonical article: https://chinaevsignal.com/news/full-tab-small-cylindrical-battery-capacity-expansion

## Key takeaways

- Ampace announced that capacity for its JP40 series has reached the hundred-million-unit level\.
- Renergy New Energy announced that its second winding and assembly line at its Changzhou base has officially entered mass production\.
- Full-tab small cylindrical batteries have achieved a breakthrough to 300Wh/kg through the combined use of high-nickel ternary cathodes and new silicon-carbon anode material systems\.

## Capacity Expansion

Ampace has announced that capacity for its JP40 series has reached the hundred-million-unit level, while Renergy New Energy said its second winding and assembly line at its Changzhou base has officially entered mass production\.

Established small cylindrical battery makers including BAK and Penghui have also joined this push, while EVE and Tianpeng, a subsidiary of Weilan Lixin, are working to release overseas small cylindrical capacity\.

Full-tab small cylindrical batteries are filling a capacity gap that is difficult to close quickly in the short term, with the supply shortage expected to ease from the second half of this year into next year\.

## Technology Shift

Nearly all companies' mass-produced products point to the same technical indicator: full-tab or tabless designs\.

In earlier years, traditional 21700 small cylindrical batteries once became the dedicated battery for Tesla's Model 3\. After 2020, the exploration of full-tab technology in large cylindrical batteries drew collective efforts from global battery companies\.

Yifei Laser's production line efficiency has risen sharply from the traditional 50PPM to more than 300PPM, and can even reach 400PPM\.

## Products and Applications

Products include Ampace's JP40, EVE's 40PL, BAK's 40D and Tianpeng's 40XG, among others\.

Some full-tab small cylindrical batteries have passed stringent nail penetration tests\.

Ampace's JP30 and JP50, among multiple specifications, cover small to medium-to-large humanoid robots, while Renergy's RS50 high-nickel series is also positioning itself in this track\.

Full-tab small cylindrical batteries have achieved a breakthrough to 300Wh/kg through the combined use of high-nickel ternary cathodes and new silicon-carbon anode material systems, alongside a push toward continuous discharge rates above 10C\.

Applications include BBU, drones, eVTOL, embodied intelligence, humanoid robots, power tools and electric motorcycles\.

## Original publisher

高工锂电. Published: 2026-10-07T13:04:50.000Z