The Beckhoff C9900-U330 is a robust and reliable external battery pack designed for use with the Beckhoff 24 V DC uninterruptible power supply (UPS) series, particularly the C9900-U32x models. This unit houses maintenance-free lead-acid batteries, providing a dependable power source to safeguard industrial PCs and automation systems against power interruptions. Its compact design allows for convenient DIN rail mounting within a control cabinet, ensuring seamless integration and protection for critical applications, preventing data loss and system downtime during unexpected power failures.