What batteries and devices does the CU4000 charge?

The CU4000 charges two BP4000 battery packs simultaneously, and is compatible with HT4500, PT4500, and SPR4500 transmitters and receivers. Each compartment delivers 1.5 A charging current with a typical charge time of 1 hour.

How long do batteries last on a full charge?

The CU4000 calculates and displays remaining battery life in real time on its built-in screen, showing exactly how much playback time is left and how long it will take to return to full capacity. A typical ~8 hour recovery cycle means full recharge overnight.

Will the CU4000 fit in my live-sound rack or studio setup?

Yes; at 3.6 x 6.8 x 3.3 inches and 20.5 oz., the CU4000 is compact enough for tech racks, tabletops, road cases, or studio carts. It requires 12 VDC, 1.3 A operating voltage.

How long will the CU4000 itself last?

The built-in life-cycle management system supports up to 1000 charging cycles, significantly extending the service life of your batteries while reducing replacement costs and environmental waste over time.

Does it prevent overcharging?

Yes; the CU4000 includes a built-in microprocessor with smart current management that prevents overcharging and monitors battery status in real time to protect your batteries and extend their lifespan.

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.

Condition	New
Country of Manufacture	China