CH 20 MB

CH 20 MB headset charger (with stand) for Mobile Business Pro Series and PRESENCE™ Mobile Series.
Article No. 506039


The CH 20 MB headset charger (with stand) is designed for use as an alternative to base station charging for both the Mobile Business Pro Series (MB Pro 1 and MB Pro 2) and the PRESENCE™ Mobile Series (the PRESENCE™ headset is mounted on the PRESENCE™ headband). Simply place the Bluetooth® headset in the charger stand when not talking and the headset will automatically charge. This charger is suitable for desk sharing or in shift work environments such as emergency centers or call centers.


  • Multiple mounting options: Wall mounted, where space is limited

  • Multiple mounting options: Cascaded, side by side

  • Multiple mounting options: Single, stand-alone charger on a desk

  • Charging time: 3 hours when connected to Sennheiser MCH 7 multi-USB power source

  • Charging time: Only 1 &1/2 hour with dedicated external power supply (400 mA)

Technical Data

  • Connector
  • Cable length
    170 cm / 5.58 ft when mounted in charger stand
  • Weight
    220 g / 7.76 oz
  • Charging time
    100 m a: 3 h
  • Charging time
    400 m a: 1½ h
  • Current consumption
    100 mA when powered from standard USB power supplies
    400 mA when powered from supplies which follow “USB Battery Charging standard V1.2”
  • Input voltage range
    4.75 - 5.25 V
  • Output voltage
    3.6 - 5.25 V


  • EU Declaration of Conformity
    • EC Declaration of Conformity (520 KB) Download

  • Safety Guides
WARNING (for California residents only): This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects and other reproductive harm. For more information go to: