꞉꞉  Heat And Power Through The Lunar Night

Space Battery is our family of radioisotope systems in development for payload heating and small electrical loads. We are starting with the thermal-survival needs of lunar landers and their payloads.

Space Battery radioisotope unit

Space Batteries

Earth rising over the lunar horizon
Space Battery mounted on a lunar lander

Helping equipment survive the cold.

Application

Batteries and sensitive electronics must stay within their operating temperatures. Our first application is a survival system matched to the payload, combining a radioisotope heat source with thermal control. Electrical variants would also supply essential loads.

How it works

Every Space Battery variant follows the same underlying process: continuous heat generation, controlled routing to where it's needed, and - for electrical variants - conversion into buffered, usable power.

Generate Heat

A sealed radioisotope source releases heat continuously through natural radioactive decay.

Control The Heat Flow

Thermal routing and insulation direct heat to the battery or payload interface.

Add Electrical Power

Electrical variants use thermoelectric or Stirling conversion concepts, with power management and buffering to serve the mission.

Close-up of Space Battery thermal plumbing

Product family

(Variant)
(Target output)
(Intended application)
Thermal Survival
2-10 W of heat
Battery and payload survival
Micro Generator
1 W of electricity
Beacons and essential standby loads
Hybrid RTG
10 W of electricity
Hosted payloads
Dynamic RPS
100 W of electricity
Small mission systems

The next development step

We are planning a 720-hour electrically heated emulator test to evaluate thermal control, battery survival and telemetry. Later stages include prototype testing in a thermal-vacuum environment and an unfueled unit representative of a flight design.