AKG CU4000 Charging Unit
The CU4000 is a dual-compartment charging station built for professional wireless microphone and in-ear monitoring systems. Its compact footprint and intelligent charging electronics make it an essential hub for WMS4500 wireless systems and IVM4500 IEM platforms, ensuring your transmitters, receivers, and BP4000 battery packs stay ready for session work without interruption.
Charging Performance & Intelligence
Dual charging compartments enable simultaneous charging of two BP4000 battery packs or compatible transmitters and receivers. The built-in microprocessor monitors battery status in real time, calculates remaining battery life, and displays recovery time to full operational capacity—essential data for studio tracking and remote recording sessions where battery management directly affects workflow efficiency and session scheduling.
Design & Durability
At just 20.5 oz. and measuring 3.6 x 6.8 x 3.3 inches, the CU4000 integrates seamlessly into any studio rack, control room table, or portable rig. Its life-cycle management system supports up to 1000 charging cycles, significantly extending battery service life while reducing replacement costs and minimizing downtime across extended recording projects and tours.
Key Features
- Two simultaneous charging compartments
- 1.5 A charging current
- 1 hour typical charging time
- 12 VDC, 1.3 A operating voltage
- ~8 hour recovery cycle
- Built-in microprocessor battery status monitoring
- Remaining battery life calculation and display
- Up to 1000 charging cycle life-cycle management
- Compatible with HT4500, PT4500, SPR4500, and BP4000 devices
- Compact dimensions: 92 x 173 x 85 mm
- Weight: 580 g
- Smart current management prevents overcharging
The CU4000 combines fast charging cycles with intelligent battery management, making it the practical foundation of a dependable wireless audio workflow that keeps your sessions moving forward.








