The whole battery is one tenth of a millimetre thin
It starts with something you wear
Watches, medical patches, smart labels. In the products that keep shrinking, the battery decides the shape.
Look closer and the battery is a sheet
BTRY cells are built on flexible metal foil. They bend with the product instead of dictating its housing.
Edge on, it is as thick as a hair
0.1 mm across the whole cell, both electrodes and the electrolyte included.
No liquid inside
The electrolyte is a solid thin film. Nothing can leak, swell or catch fire, and the cell keeps working at up to 150 °C.
Ions travel less than a hair's width
Short paths let a cell charge and discharge in about one minute. Wireless bursts need no extra capacitor.
Every layer from one production line
Off-the-shelf semiconductor equipment, roll to roll, 60% fewer process steps than conventional Li-ion and no toxic solvents.
BTRY is a spin-off from Empa and ETH Zurich. A team in Dübendorf is taking solid-state thin-film batteries from lab cells to roll-to-roll production, backed by an oversubscribed CHF 4.6M seed round led by Redstone VC.
Where a battery used to be the limit
Imagine what your product could do if the battery wasn't the limitation. These are the markets BTRY is building for first.
IoT sensors and smart labels
Active tracking labels and wireless sensors that send bursts of data straight from the cell.
Read about IoTMedTech
Thin, flexible and non-flammable power for patches and devices worn on the body.
Read about MedTechConsumer electronics
Fast charging in compact wearables, where every tenth of a millimetre counts.
Read about wearablesSemiconductor industry
A collaboration with InsightSilica on solid-state batteries for chip manufacturing.
Read about the partnership
BTRY ES (1S1P)
- Temperature
- −20 to +105 °C
- Capacity
- 0.25 mAh
- Peak current
- 10 mA
- Voltage
- 3 V
- Dimensions
- 34 × 29 × 0.2 mm
Values from the current product card. Cells can be shaped to fit your housing.
Request the spec sheet“BTRY's ultra-thin battery shows that innovative ideas generate competitiveness. This space-saving and resource-efficient energy storage solution unlocks new possibilities.”
“The start-up BTRY has demonstrated the superiority of both its product performance and its production technology.”
Design your next device around a thinner battery
Tell us about your product, its size and its power profile. The team in Dübendorf will come back with a cell that fits.
Start the conversation