Cell to Pack Battery Market

The global cell to pack battery market size was USD 42.60 Billion in 2025 and is expected to register a revenue CAGR of 14.7% during the forecast period. Market revenue growth is supported by CATL and BYD, the world's two largest EV battery manufacturers, both having built their dominant positions primarily around cell-to-pack architecture that eliminates the module layer between individual cells and the finished battery pack. CATL unveiled its third-generation Qilin battery at its Super Tech Day event in April 2026, achieving a gravimetric energy density of 280 watt-hours per kilogram and a volumetric energy density of 600 watt-hours per litre for nickel manganese cobalt chemistry, alongside a Qilin Condensed Battery reaching 350 watt-hours per kilogram with a pack weight below 650 kilograms, enabling executive-class sedans to achieve a range exceeding 1,500 kilometres. BYD followed one month earlier, in March 2026, with its second-generation Blade Battery, a lithium iron phosphate cell-to-pack design achieving 162 watt-hours per kilogram, a 5% improvement, at a disclosed cell cost of RMB 0.65 per watt-hour, alongside a new 1000-volt high-voltage vehicle platform. Every additional gigawatt-hour of cell-to-pack battery shipped removes a manufacturing and assembly step that module-based designs require, and the resulting reduction in parts count, weight, and manufacturing cost is what continues to draw both established and emerging battery manufacturers toward cell-to-pack and cell-to-chassis architecture. These are some of the key factors driving revenue growth of the market.

Cell-to-pack, cell-to-chassis, and legacy module-based architecture are the technology categories that constitute the cell to pack battery market, applied across lithium iron phosphate and nickel manganese cobalt chemistries by a concentrated group of large-scale battery cell manufacturers. For instance, in February 2026, CATL confirmed that more than 25.88 million electric vehicles worldwide were powered by its batteries, a cumulative installed base built predominantly on the company's cell-to-pack Qilin and Shenxing product lines rather than earlier module-based designs. Cell-to-pack architecture accounts for the largest share of market revenue because it has already been adopted at scale by the two highest-volume global battery suppliers, CATL and BYD, which together accounted for 54.3% of global EV battery cell demand in the first half of 2026, according to SNE Research, giving cell-to-pack products the largest disclosed installed base of any battery packaging architecture in the market today.

However, cell-to-pack and cell-to-chassis architectures reduce the ability to service or replace individual battery modules in the field, since the closer integration between cells and the surrounding structure that delivers weight and cost savings also removes the modular repairability that characterised earlier battery pack designs, a trade-off that raises the cost and complexity of collision repair and end-of-life disassembly for recycling. Transitioning an existing module-based production line to cell-to-pack or cell-to-chassis manufacturing also requires substantial retooling investment, and battery manufacturers that have not yet made this transition risk losing cost competitiveness against CATL and BYD without the scale to justify the capital expenditure required to catch up. Cell-to-chassis architecture, which integrates the battery pack directly into the vehicle's structural chassis, also ties battery design more tightly to a specific vehicle platform than cell-to-pack designs, reducing the ability of automakers to share a single battery architecture across multiple vehicle platforms. These factors substantially limit cell to pack battery market growth over the forecast period.

Based on technology, the global cell to pack battery market is segmented into cell-to-pack, cell-to-chassis, and legacy module-based architecture. The cell-to-pack segment commands the largest revenue share because it has already achieved the highest disclosed shipment volume of any packaging architecture, led by CATL's Qilin platform, which the company states achieves a volume utilisation rate exceeding 72%, and BYD's Blade Battery, both of which eliminate the module layer to increase energy density and reduce manufacturing cost relative to module-based designs still used by smaller battery manufacturers transitioning toward cell-to-pack production.

The cell-to-chassis (CTC) segment is expected to register a rapid revenue growth rate in the global cell to pack battery market over the forecast period. Cell-to-chassis architecture extends the cell-to-pack concept one step further by integrating the battery pack directly into the vehicle's structural chassis, eliminating a separate pack enclosure entirely and further reducing vehicle weight, though the approach ties battery design more tightly to a specific vehicle platform than cell-to-pack architecture allows. As automakers increasingly design new vehicle platforms around a structural battery pack from the outset rather than retrofitting an existing platform, cell-to-chassis adoption is scaling from a smaller base than cell-to-pack but at a faster rate as new-generation vehicle platforms enter production.

• 01What is the global cell to pack battery market size in 2025 and what CAGR is expected during 2026-2035?
• 02What specifications did CATL's third-generation Qilin battery and Qilin Condensed Battery achieve at its April 2026 Super Tech Day?
• 03What second-generation Blade Battery and 1000-volt platform did BYD unveil in March 2026?
• 04How many electric vehicles worldwide were powered by CATL batteries as of February 2026?
• 05What combined global market share did CATL and BYD hold in 2025 and the first half of 2026?
• 06Why does cell-to-pack architecture command the largest revenue share despite faster growth in cell-to-chassis designs?
• 07What trade-offs does cell-to-pack and cell-to-chassis architecture introduce for battery repairability and end-of-life recycling?
• 08Why does cell-to-chassis architecture tie battery design more tightly to a specific vehicle platform than cell-to-pack architecture?
• 09Why have LG Energy Solution and Samsung SDI's global market shares declined despite overall EV battery market growth?
• 10How does Tesla's 4680 cylindrical cell structural pack platform differ from CATL's and BYD's prismatic cell-to-pack designs?

This report covers the global cell to pack battery market across all major technologies, battery chemistries, vehicle types, and geographic regions. Primary research combines panel conversations with industry experts and is cross-referenced against company financial disclosures and independent shipment-tracking data. All market size figures use 2025 as the base year with a 2026-2035 forecast period.