Profoto will unveil a newly designed battery generator next month, promising unrivalled flash speeds and split-second recycle times that will reset the usual parameters of location shoots.

The Pro-B4 1000 Air, which will get its first public viewing in Hall 9.1 at the Photokina trade show in Cologne in mid-September, will deliver flash durations down to 1/25,000s (measured at t0.5), making it faster than any other battery generator – or, indeed, any flash pack on the market – claims the Swedish maker, thanks, it says, to its patent-pending Hybrid Capacitor Technology.

It's also said to have fastest recycle times of any battery generator, producing up to 30 flashes per second at full throttle on low power, and less than a second at maximum power. Claims for the device's Li-Ion battery recharge times are similarly impressive, with Profoto quoting less than 45 minutes, adding that it can be recharged while in use, "which means that if the modelling light is used moderately, the pack can be used continuously while connected to a mains outlet". The same timing applies to photographers using Profoto's portable power source, the Batpac.

Profoto says it has gone out of its way to keep the design functional; its chassis is built from cast aluminium housed in a rubber frame, while all connections have protective lids, and the pack has no air vents to help prevent water or dust from getting inside. The unit's energy setting can be adjusted in 1/10 f-stop increments, either manually or via Profoto's Air Remote or Air USB. The display can be set to show the output in f-stops or watts per second (Joules), and information about the flash duration on each head is easily accessible.

"We had a clear goal when we first started working with the Pro-B4," says Göran Marén, product manager at Profoto. "We wanted to build the fastest, toughest battery generator there ever was. We wanted to change the game."

The pack will be launched alongside two new flash heads, the Pro Head Plus and Pro-B Head Plus, which improve on previous versions by adding a flash tube that's more consistent in output, especially at lower power settings, along with better weather sealing to the connectors.

Pricing has yet to be announced, but it's likely to be premium. Further details are expected on 10 September.