# QuantumScape shows Osprey solid-state cell: 80% capacity after 1,000 cycles at 1 atm in lab

- Published: 2026-11-12 04:59 UTC
- Section: Power & Energy › Batteries
- Tags: QuantumScape Osprey, all-solid-state battery, sulfide solid electrolyte, 1,000 cycles, low external pressure, anode-free cell, QSE-5, 1,100 Wh/L, fast charging 10C
- URL: https://realtech.media/news/rt-cc7c51d5d6ed5e9269e5db6a_quantumscape_shows_osprey/

**A two-layer laboratory cell kept about 80% of its capacity over 1,000 cycles at one atmosphere. The cell is small, and no launch date for Osprey has been announced.**

![QuantumScape shows Osprey solid-state cell: 80% capacity after 1,000 cycles at 1 atm in lab](https://realtech.media/media/2026/11/96e0a7bc93d82352.webp)
*ua.news*

QuantumScape has unveiled Osprey, a platform for all-solid-state battery cells, ua.news reports. According to the company, a two-layer laboratory cell withstood 1,000 full charge and discharge cycles and retained about 80% of its initial capacity at an external pressure of one atmosphere. [1]

## Design and test conditions

In the new design, QuantumScape replaced the liquid catholyte in the cathode with a solid sulfide electrolyte. The company kept the ceramic separator and the anode-free architecture, in which lithium is deposited on the separator side during the first charge. [1] The QSE platform, including the QSE-5 cell, uses a high-nickel NMC cathode and a liquid catholyte, so it is not an all-solid-state system.

The 1,000-cycle test used a two-layer cell with a 50 by 65 mm cathode, the same area as in the QSE-5. It ran at 30°C over a 0% to 100% state-of-charge range at 1C for both charging and discharging, with a cathode areal loading of 5.5 mAh/cm². [1]

This was a small laboratory cell. Electrek estimates its capacity at about 0.3–0.4 Ah, while the QSE-5 holds approximately 5 Ah. QuantumScape emphasizes low external pressure because sulfide systems often need strong compression to keep components in contact. By the company's calculation, 20 atmospheres on a 10 by 24.2 cm cell equals a force of about 5,000 kgf and calls for massive steel plates and tie rods in the battery pack. [1]

## Fast charging, cold and energy density

The five-minute charge from 10% to 80% reported by QuantumScape was demonstrated at 10C and 80°C. The company has not released data for an equivalent result at room temperature. [1] At −20°C, a single-layer cell with a 21 by 21 mm cathode retained 68% of its room-temperature capacity during slow C/3 discharge. [1]

The energy density of up to 1,100 Wh/L is a QuantumScape projection. A confirming test with a high-loading cathode used an 11 mm cell at three atmospheres over 100 cycles. [1] Osprey has so far been shown only at laboratory scale, and technologies for higher-throughput manufacturing are under development.

QuantumScape offers Osprey as an open platform: automakers can use the company's cathode or their own solid-state cathodes. No timeline for the industrial launch of Osprey has been announced. For the QSE-5, the company plans a 100 MWh production line, with manufacturing set to begin in 2028. [1]

## Sources

1. [ua.news](https://ua.news/en/dovkolo-svitu/quantumscape-predstavila-platformu-osprey-z-resursom-1000-tsikliv-electrek)

---

Source: RealTech, realtech.media — https://realtech.media/news/rt-cc7c51d5d6ed5e9269e5db6a_quantumscape_shows_osprey/