Amprius Technologies SiCore500 (2. Generation SiCore)
Series: Amprius Technologies Battery cells for drone packs
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
The Amprius SiCore500 is the second generation of SiCore silicon-anode cells from Amprius Technologies of Fremont, California. The manufacturer announced it on 2 September 2026 and names HAPS, meaning high-flying platforms in the stratosphere, fixed-wing aircraft and other unmanned systems with long flight times as its field of use.
The key figure is the energy density of 500 Wh/kg at 1C; 1C means the cell is discharged in about an hour, so it is designed for steady, low current. The number is a manufacturer's figure, with independent tests still to come. Commercial availability is expected in the fourth quarter of 2026. The cell comes in customer-specific formats and as a standard pouch for small unmanned systems (sUAS).
Even a new cell must meet the tests of UN 38.3 for transport before it may be shipped. As with all pouch cells, pack it protected against short circuit and pressure; assembly into a flight battery and the protection technology belong in a specialist workshop. For air travel with spare batteries, IATA sets the limits at 100 and 160 Wh. Customer-specific formats point to project-based design together with the manufacturer.
When choosing a silicon cell with 500 Wh/kg, besides energy the cycle count, permitted discharge rate and temperature window matter most; these figures from the cell maker belong in the decision, as does the question of which format the airframe can take. Silicon anodes expand considerably on charging, which limits cycle life, and cold lowers the capacity that can be drawn.
Technical data
Other data
| C-rate | 1correct |
|---|---|
| Cell chemistry | Li-Ion Si-Anodecorrect |
| Cell count (S) | 1Scorrect |
| Energy density (Wh/kg) | 500 kgcorrect |
| Form factor | Pouchcorrect |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 5 individual figures for this model. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
