The Profoto B1X 500 AirTTL To-Go Kit is a 500Ws battery-powered monolight with built-in AirTTL wireless control, a 9 f-stop power range adjustable in 1/10-stop increments, and a complete kit format designed for location photographers who need professional-grade flash without a power outlet.
Key Specifications
- Power output: 500Ws
- Power range: 9 f-stops, adjustable in 1/10-stop increments
- Power source: Integrated rechargeable battery — no mains power required
- Battery capacity: Up to 325 full-power flashes per charge
- Wireless system: Built-in AirTTL — supports TTL for Canon, Nikon, and Sony Alpha
- Flash sync speed: 1/200s or 1/250s depending on camera system
- Light shaping: Compatible with Profoto OCF (Off-Camera Flash) Light Shaping Tools
- Weight: Approximately 3 kg per head — designed to be hand-holdable
- Kit weight: 6 kg (full To-Go Kit including accessories)
- Compared to a speedlight: Roughly 10 times more powerful than a typical on-camera flash
What makes the Profoto B1X 500 AirTTL To-Go Kit special?
Battery-powered studio-grade flash is not new, but the B1X sits in a class of its own for photographers who genuinely need reliability on location. At 500Ws with a 9 f-stop range in 1/10-stop steps, you get fine-grained control that rivals a tethered studio head — without the cable running across a beach or a rooftop.
The AirTTL system is built directly into the head, so there's no separate receiver to mount, lose, or forget to charge. TTL metering works natively with Canon E-TTL/E-TTL II, Nikon, and Sony Alpha bodies, meaning you can hand the kit to an assistant, point, and shoot — or dial in manual power from an Air Remote on your camera.
The Godox AD600Pro II is the most common budget alternative: it offers 600Ws output, faster recycling (down to 0.01s), and uses the widely available Bowens S-Type modifier mount. If modifier choice and lower cost matter most, the Godox is worth considering. The B1X counters with a more refined build, tighter colour consistency across the power range, and direct integration with the full Profoto modifier ecosystem — including OCF Light Shaping Tools that are purpose-built to keep size and weight down on location.
Against the Profoto B1 500 AirTTL (its predecessor), the B1X adds a more powerful battery — 325 full-power flashes versus the B1's 220 — plus improved freeze mode for fast action and faster recycling time. If you find a used Profoto B1, the core lighting quality is very similar, but the B1X is the better long-term pick for heavy shooting days.
