SWIT KA-S21B | B-mount battery plate for V-mount devices/cameras, 28.8V, High Load

The SWIT KA-S21B B-Mount to V-Mount Conversion Plate (28.8V) allows cine-style cameras and V-mount devices to be powered using high-voltage B-Mount batteries. Designed for professional applications such as the RED V-Raptor XL, this lightweight adapter supports 21.6–33.6V input/output and enables seamless integration of SWIT B-Mount batteries including the HB-A290B and BIVO series. Its slim, durable design makes it an ideal high-load power solution for demanding cinema productions.

The SWIT KA-S21B 28.8V B-Mount to V-Mount Conversion Plate is a professional power adapter designed to expand compatibility between high-voltage B-Mount batteries and V-Mount cameras or devices. Built for cine-style productions, it provides a reliable solution for powering advanced digital cinema cameras such as the RED V-Raptor XL using SWIT’s 28.8V B-Mount battery ecosystem.

The KA-S21B mounts directly onto a V-Mount camera or device, converting it to accept a single B-Mount battery. Supporting an input and output voltage range of 21.6V to 33.6V, this adapter is engineered for high-load performance, making it suitable for power-hungry cinema cameras and broadcast equipment.

Its thin and lightweight design (only 0.5 lb / 227 g) ensures minimal added bulk while maintaining a strong and secure mounting system. The adapter features a B-Mount front plate and V-Mount rear connection, creating a stable and professional power interface.

⚠ Important: Ensure your V-Mount camera or device supports up to 33.6V input before use.

The KA-S21B is fully compatible with select SWIT B-Mount batteries, offering flexible and high-capacity power options for demanding production environments.

Key Features

• Converts B-Mount battery to V-Mount camera/device
• Designed for 28.8V high-load applications
• Ideal for RED V-Raptor XL 28.8V power solution
• Supports 21.6V – 33.6V input/output
• Compatible with SWIT HB-A290B & BIVO series batteries
• Slim, thin, and lightweight design
• Single battery bay
• Durable and secure mounting system

Compatible SWIT Batteries

• HB-A290B
• BIVO-98
• BIVO-160
• BIVO-200
• BIVO-290