# What is the battery life of Optimus?

**Tesla publishes a capacity, not a battery life.** DEPLOY's record holds Tesla's published battery capacity for Optimus, 2.3 kWh at 52 volts on the first generation, and no runtime at all. Capacity is how much energy the pack stores; battery life is how long a charge lasts doing work. Other robot makers publish the second figure. On this record, Tesla does not.

Last verified Jun 1, 2023. 23 sources.

## Short answer

The honest answer is that the number most people are looking for does not exist on DEPLOY's record. Tesla has published a battery capacity for Optimus, 2.3 kWh at 52 volts for the first generation, and that figure is on the registry. No hours-per-charge figure is.

Those two things are often treated as the same and they are not. Capacity is how much energy the pack holds. Battery life is how long that energy lasts, which depends entirely on what the robot is doing: standing still, walking, or lifting a load draw very different amounts of power. A capacity figure alone cannot be converted into a runtime without knowing the draw, and Tesla has not published one on this record.

You will find a figure of roughly eight hours repeated in a lot of places. Treat it carefully. It does not come from anything on DEPLOY's record, and this page will not repeat a number it cannot trace to a source.

What makes the gap clear is that publishing a runtime is an ordinary thing for a robot maker to do. Every robot on the record that states one is set out on this page, each figure attributed to the maker that published it, so you can see the band a humanoid runtime currently sits in and judge the missing Optimus figure against it.

## Capacity is on the record. Runtime is not.

- **What the record holds:** 2.3 kWh, 52 V (Gen 1 published spec) (battery capacity, Tesla's own published spec)
- **What it does not:** no runtime. A query for reviewed runtime specs on this record returns 0. Hours per charge is not a figure the registry holds for Optimus.

## What other makers publish

| Robot | Type | Published runtime | As of | Posture | Source |
| --- | --- | --- | --- | --- | --- |
| Zoox Robotaxi | Autonomous vehicle | 16 hours | Jun 1, 2023 | Maker's published figure | [TechCrunch (Kirsten Korosec, 2020-12-14): "a 133 kilowatt-hour battery that Zoox said allows it to operate for up to 16 continuous hours on a single charge." Claimant-attributed, stays verification_status=claimed.](https://techcrunch.com/2020/12/14/amazons-zoox-unveils-electric-robotaxi-that-can-travel-up-to-75-mph) |
| NEO | Humanoid | 4 hours | not yet on record | Maker's published figure | [1X NEO official product page: "Run-time: 4h" (Capacity 842 Wh). Accessed 2026-07-31.](https://www.1x.tech/neo) |
| Noetix N2 | Humanoid | 2 hours | not yet on record | Maker's published figure | [NOETIX N2 – RBTX Commercial Marketplace](https://rbtx.com/en-US/components/humanoid/noetix-robotics-n2), [N2 – Humanoid.guide](https://humanoid.guide/product/n2/) |
| Spot | Quadruped | 1.5 hours | Jan 1, 2022 | Maker's published figure | [Boston Dynamics Spot product specifications](https://www.bostondynamics.com/products/spot) |
| Parrot ANAFI USA | Drone | 32 minutes | Jun 1, 2020 | Maker's published figure | [Parrot ANAFI USA technical specifications: "32 minutes (30 minutes on MIL version)".](https://www.parrot.com/en/drones/anafi-usa/technical-specifications) |

## How we know this

- [Tesla](https://www.tesla.com/we-robot) (2026-01-01)
- [Wikipedia](https://en.wikipedia.org/wiki/Optimus_(robot)) (2026-01-01)
- [Electrek](https://electrek.co/2026/04/22/tesla-optimus-production-fremont-model-sx-line/) (2026-04-22)
- [IEEE Spectrum](https://spectrum.ieee.org/tesla-optimus-robot)
- [CNN Business](https://www.cnn.com/2022/09/30/business/tesla-bot-robot)
- [InsideEVs](https://insideevs.com/news/613692/tesla-humanoid-robot-ai-day-2022/)
- [Tesla (official)](https://www.youtube.com/watch?v=cpraXaw7dyc)
- [Electrek](https://electrek.co/2023/12/12/tesla-unveils-optimus-gen-2-next-generation-humanoid-robot/)
- [IEEE Spectrum](https://spectrum.ieee.org/robotics-experts-tesla-bot-optimus)
- [SEC EDGAR (Tesla filing)](https://www.sec.gov/Archives/edgar/data/0001318605/000110465925101876/tm252289d41_defa14a.htm)
- [Bloomberg](https://www.bloomberg.com/news/articles/2024-10-14/tesla-s-optimus-robots-were-remotely-operated-at-cybercab-event)
- [TechCrunch](https://techcrunch.com/2024/10/14/tesla-optimus-bots-were-controlled-by-humans-during-the-we-robot-event/)
- [Fortune](https://fortune.com/2024/10/13/elon-musk-tesla-optimus-robot-tele-operated-robotaxi/)
- [Electrek](https://electrek.co/2026/01/28/musk-admits-no-optimus-robots-are-doing-useful-work-at-tesla-after-claiming-otherwise/)
- [CNBC](https://www.cnbc.com/2025/04/23/teslas-optimus-hit-by-chinas-rare-earth-restrictions-says-musk.html)
- [Fortune](https://fortune.com/2025/06/09/milan-kovac-tesla-optimus/)
- [CNBC](https://www.cnbc.com/2025/06/06/tesla-optimus-robotics-vp-is-leaving-the-company.html)
- [TechCrunch (Kirsten Korosec, 2020-12-14): "a 133 kilowatt-hour battery that Zoox said allows it to operate for up to 16 continuous hours on a single charge." Claimant-attributed, stays verification_status=claimed.](https://techcrunch.com/2020/12/14/amazons-zoox-unveils-electric-robotaxi-that-can-travel-up-to-75-mph) (2020-12-14)
- [1X NEO official product page: "Run-time: 4h" (Capacity 842 Wh). Accessed 2026-07-31.](https://www.1x.tech/neo) (2026-07-31)
- [NOETIX N2 – RBTX Commercial Marketplace](https://rbtx.com/en-US/components/humanoid/noetix-robotics-n2) (2025-04-01)
- [N2 – Humanoid.guide](https://humanoid.guide/product/n2/) (2025-04-01)
- [Boston Dynamics Spot product specifications](https://www.bostondynamics.com/products/spot) (2022-01-01)
- [Parrot ANAFI USA technical specifications: "32 minutes (30 minutes on MIL version)".](https://www.parrot.com/en/drones/anafi-usa/technical-specifications) (2020-06-01)

## Common questions

### How long does Tesla Optimus run on a charge?

No runtime figure for Optimus appears on DEPLOY's record. The registry holds Tesla's published battery capacity, 2.3 kWh at 52 volts for the first generation, but capacity is not runtime. If Tesla publishes an hours-per-charge figure and it is recorded, this page will show it.

### Is Optimus battery life 8 hours?

That figure circulates widely, but nothing on DEPLOY's record supports it. The registry carries no runtime for Optimus at all, so this page does not repeat the number. A figure with no traceable source is not an answer, and treating it as one is how an unsourced claim becomes accepted fact.

### What is the difference between battery capacity and battery life?

Capacity is how much energy the pack stores, measured in kilowatt-hours. Battery life is how long that energy lasts in use, measured in hours. The conversion between them depends on how much power the robot draws, which changes with the task, so a capacity figure on its own cannot tell you the runtime.

### How big is the Optimus battery?

Tesla's published figure on DEPLOY's record is 2.3 kWh at 52 volts for the first-generation Optimus. That is the pack's energy capacity. It is the maker's own published spec rather than an independent measurement.

### Which humanoid robots publish a battery life?

On DEPLOY's record, 1X publishes four hours for NEO and Noetix publishes two hours for N2. Both are the makers' own figures rather than independent measurements. That two-to-four hour band is the range a humanoid runtime currently sits in on this record.

### Can you buy an Optimus?

No. Optimus is at the research and development stage on DEPLOY's record, with no verified external sale and no preorder. The identity, maker, and projected price are tracked separately from this page.

## Keep reading

- [Which humanoid robots can you actually buy in 2026?](/which-humanoid-robots-can-you-actually-buy.md): Buying
- [Are humanoid robots actually autonomous or teleoperated?](/humanoid-robot-autonomy-verified.md): Buying
- [What is Elon Musk's robot?](/what-is-elon-musks-robot.md): Buying
- [All verified answers](/answers.md): Every standing question DEPLOY tracks.

_Canonical URL: /what-is-the-battery-life-of-optimus. HTML version: [link](/what-is-the-battery-life-of-optimus)._