Agility's Digit 5 Runs 90 Minutes and Charges in Nine; No Customer Has Tested the Ratio

The number that matters in Agility Robotics' battery announcement is not 90 minutes of runtime but the 10:1 ratio between running and charging. Agility said on October 15, 2026 that Nyobolt, a battery developer in Cambridge, UK, will supply the pack for Digit 5, which runs 90 minutes and recharges in 9. Digit 4 managed 2:1.

Every figure below is a company claim. No outside party has timed the pack, and the announcement leaves out capacity, pack weight, charger power and cycle life.

What 90 and 9 add up to

A 10:1 ratio means the robot spends about 91% of a charge cycle working. Humanoids Daily ran the arithmetic and put it at roughly 21.8 hours in a 24-hour day, against about 16 hours, or 67%, for the 2:1 ratio. Agility's own target is "more than 20 productive hours", which Daniel Diez, the company's Chief Business Officer, described as "more than two full shifts."

The 21.8-hour figure is a ceiling, and Humanoids Daily says so. It assumes the robot goes to the charger the instant it hits its limit, that nothing is queued, and that no task is waiting on a human. Travel to a charger, maintenance and stalled work all come off the top.

1. Digit 4 (2:1)16 hours
2. Digit 5 (10:1)21.8 hours

Source: Humanoids Daily arithmetic on Agility's stated ratios, accessed 2026-10-18

The denominator is a fleet, not a robot

A robot that charges for 9 minutes in every 99 occupies a charging bay for about 9% of the day. At 2:1 the bay is busy about a third of the time. The faster pack therefore changes the ratio of chargers to robots, not only the robot's uptime; the announcement does not say what charger power a 9-minute fill demands, which is the number a facilities manager would ask for first.

Diez put the business case plainly: "For our customers, Digit's uptime is the business case." Sai Shivareddy, Nyobolt's co-founder and CEO, said Digit 5 "will need more power from a smaller, lighter pack." Neither statement carries a figure for watt-hours, so the size of the pack, and with it the energy Digit carries per kilogram, stays unknown.

Who supplies the pack

Nyobolt was founded in 2019 and Agility in 2015. The Robot Report lists a $60 million Nyobolt raise at a $1 billion valuation in May 2026, with support from Symbotic, so the supplier is itself a young company with a first large humanoid customer. Digit 5 launched in September 2026 with new legs, and The Robot Report ties early access to the Nyobolt pack, which is expected in the first half of 2027.

The sequencing leaves a question the announcement does not answer: which battery any Digit 5 delivered before then carries.

Price and the order book

At Agility's Investor Day on October 6, 2026, the Digit 5 launch bill of materials was put at about $150,000, according to Humanoids Daily. The same piece mentions a $300 million order that releases robots as individual use cases are demonstrated, and a $2.5 billion SPAC merger with Churchill Capital Corp XI, agreed in June 2026 under the proposed ticker AGLT. A shareholder vote date of November 2 appears in a related article.

A bill of materials is a cost to build, not a price to buy. The announcement gives no list price or lease rate.

Item	Figure	Source
Runtime per charge	90 minutes	Agility, via The Robot Report
Charge time	9 minutes	Agility, via The Robot Report
Real-world operations to date	more than 65,000	The Robot Report
Launch bill of materials	about $150,000	Humanoids Daily
Early access begins	first half of 2027	The Robot Report

The 65,000 operations are a count of events, not of robots or hours, and the report names no customer or site.

Early access in 2027

Early access to Digit 5 with the Nyobolt pack is expected to begin in the first half of 2027, with broader availability over the following six to nine months. That is a long gap in which the ratio stays a specification.

The industry has a habit of announcing rates that depend on a controlled setting. This site covered Industrial Next's claim that factory robots can switch tasks in minutes, and an earlier piece on a Tesla driver-assistance claim that stayed unconfirmed; the pattern is the same, a headline number first and a site test later.

What would change my read

Two disclosures would move this from a ratio to a result. The first is a cycle-life figure: a pack charged 14 or 15 times a day reaches 1,000 cycles in about ten weeks, and the announcement gives no life figure. The second is a customer reporting measured productive hours across a shift pattern. Humanoids Daily put it directly: the ratios illustrate the opportunity but do not prove fleet productivity.

Until one of those arrives, the supportable reading is narrow. Nyobolt has a pack that Agility says delivers five times the work per minute of charging that Digit 4 did, and the 20-hour day is what that looks like on a spreadsheet.