Amprius Technologies reported record financial results for the second quarter ended June 30, 2025, on August 7, 2025, with total revenue reaching $15.1 million. This represents a remarkable 350% increase from $3.3 million in Q2 2024 and a 34% sequential increase from Q1 2025. Product revenue, primarily driven by SiCore shipments, surged by 335% year-over-year to $14.5 million.
For the first time, Amprius achieved a positive gross margin of 9% in Q2 2025, a substantial improvement from negative 21% in Q1 2025 and negative 195% in Q2 2024. This pivotal shift towards profitability is attributed directly to the SiCore product line's positive gross margin contribution and higher sales volume, validating the company's capital-light contract manufacturing model.
Operating expenses remained lean at $8.2 million, increasing by 27% year-over-year due to strategic investments in sales and R&D, but demonstrating operating leverage relative to revenue growth. The net loss significantly narrowed to $6.4 million, or $0.05 per share, a 49% reduction from $12.5 million in Q2 2024. The company maintained a robust liquidity position with $54.2 million in cash and no debt as of June 30, 2025.
The backlog at quarter end totaled $29.1 million, up 57% year over year. Amprius's SiCore cell (SA102) has reached 450 watt-hours per kilogram in energy density, and a third party validated a 500 Wh/kg battery platform. The company's batteries powered the Zephyr drone from AALTO/Airbus for a non-stop 67-day flight.
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