OPPORTUNITY ASSESSMENT: HIGH. Battery life has been one of the biggest limits on humanoid robots. One supplier now says it has a fix, and it just signed its second major robotics customer.
Nyobolt, a battery maker based in Cambridge, U.K., will power Agility Robotics’ newest humanoid, Digit 5, The Information reports. Agility announced the partnership on October 15. It’s Nyobolt’s second robotics contract. The company’s batteries already run Symbotic’s SymBot warehouse robots.
🎯 The Core Intel
Agility’s own numbers tell the story:
- Runtime: 90 minutes per charge.
- Recharge time: 9 minutes.
- Run-to-charge ratio: 10:1. Digit 4 managed only 2:1.
- Daily uptime: Agility says Digit 5 can work more than 20 hours in a 24-hour day.
- Timeline: Early access is expected in the first half of 2027, with wider availability over the following six to nine months.
That jump from 2:1 to 10:1 is the headline. Digit 4 spent one hour charging for every two hours of work. Digit 5 charges for about six minutes per working hour.
⚡ Why Batteries Are the Bottleneck
Humanoid demos look great on video, but warehouses don’t pay for demos. They pay for uptime. A robot that sits on a charger a third of the day either needs a backup unit or leaves gaps in the shift. Both hurt the return on investment.
That’s why charging speed matters as much as how long a single charge lasts. You can’t simply pack in more cells, because extra weight drains power faster and makes a walking machine less stable. Nyobolt’s pitch is to charge fast instead of carrying a huge battery. Short top-ups during natural breaks in the work keep the robot moving without loading it down.
Nyobolt CEO Sai Shivareddy said Agility set a very high bar for battery durability in live warehouse and manufacturing settings. That’s the right test. Fast charging is easy in a lab. Doing it thousands of times without the cells wearing out is the hard part.
📍 Context: Where This Fits
What stands out here is the pattern. Nyobolt has now landed two serious logistics automation customers:
- Symbotic: Nyobolt’s tech in SymBot robots reportedly delivers six times the energy capacity of the ultracapacitors used before, while weighing 40% less.
- Agility: Now powering a bipedal humanoid built for warehouse and factory floors.
This matters because the humanoid race is shifting. For the last two years, the competition centered on AI models, hands and walking. Now it’s moving to the less glamorous stuff: power, durability and total cost of running the machines. Specialist suppliers like Nyobolt are becoming key partners, much like specialist chip and memory makers did in the AI data center boom.
Agility is also one of the few humanoid companies with real commercial deployments. Its customers care about uptime numbers, not stage demos. A 10:1 ratio is the kind of number that actually lands with an operations manager.
🔍 Caveats
- The figures are Agility’s own claims. No independent testing has been published yet.
- Charge cycles at scale are unproven. Ninety-minute shifts with nine-minute top-ups mean far more charge cycles per day than usual. How long the cells last under that load is the real question.
- Shipping is still months away. Early access starts in the first half of 2027, and broad rollout could stretch toward 2028.
🧭 What to Watch
- Rival responses. Expect Figure, Apptronik, Tesla and others to start publishing their own run-to-charge ratios. Uptime is becoming a sales metric.
- More Nyobolt deals. Two robotics contracts make a pattern. A third would make Nyobolt the go-to power supplier for mobile robots.
- Pilot data from 2027. The first real-world Digit 5 deployments will show whether the 20-hour workday holds up on an actual warehouse floor.
For teams evaluating automation, the takeaway is practical. Stop asking only what a humanoid can do. Ask how many hours a day it can actually do it. Full details are available in The Information‘s original report.