Prismatic AgentsCalculator
How long does a robot mind run on a battery?
Estimate runtime, energy per shift and share of battery for a mind drawing a steady power, using published battery sizes. The formula and every default are shown.
How it works
runtime_hours = battery_wh × efficiency ÷ (average_watts × duty_cycle)
- Assumptions: steady average power; conversion losses folded into efficiency (90% default); the mind's draw only, not the robot's motors.
- Defaults checked: Sep 27, 2026 9:00 AM. Battery sizes carry their evidence label from the comparison. Mind presets are the Jetson AGX Orin 64 GB, Prismatic's greenfield host; retrofit sites run on a mains-powered 64 GB Mac mini (M5 Pro) and use no robot battery.
Worked example: a 2.3 kWh battery at 90% efficiency with a 30 W mind: 2,300 × 0.9 ÷ 30 ≈ 69 hours. Over an 8-hour shift the mind needs 240 Wh, which draws about 267 Wh from the battery at 90% efficiency: about 12%.
Questions
Why is the robot's own runtime much shorter than these numbers?
Robots report whole-body runtime: motors, balance and sensors draw far more than a mind. This calculator estimates the mind's share only.
Is Prismatic's Orin figure measured?
Not yet. The 15 / 30 / 50 / ~60 W values are NVIDIA's published power modes; Prismatic will publish measured watts per mode.
Does this tell me which robot to buy?
No. It turns published numbers into a runtime estimate so you can weigh what matters to you.