The BA 40 battery is an official rechargeable battery pack developed by Sennheiser for chose devices within the SpeechLine Digital Wireless ecosystem. Learn more about its features, compatibility, and usage in this article.
What is the BA 40 Battery?
The BA 40 battery is a genuine lithium-ion rechargeable battery pack from Sennheiser. According to the manufacturer, the BA 40 is designed to power transmitters within the SpeechLine Digital Wireless system, allowing users to operate their equipment without relying on disposable batteries.
.jpg)
Key Technical Specifications of the BA 40 Battery
- Battery Type: Lithium-ion
- Voltage: 3.6 V
- Capacity: 2.1 Ah
- Product Code: 506656
- Official Warranty: 6 months
Which Microphones and Devices Use the BA 40 Rechargeable Battery?
The BA 40 rechargeable battery was specifically developed by Sennheiser for:
- SL Tablestand DW
- SL Boundary DW
.jpg)
These devices are part of the SpeechLine Digital Wireless family and are commonly used in conference rooms, meeting facilities, government institutions, educational environments, and other applications that require professional speech reinforcement.
Sennheiser does not list compatibility between the BA 40 and handheld or bodypack transmitters from the XSW, EW G4, or EW-D product lines. Users should therefore use only the battery accessories specified for their particular system.
How to Recharge the BA 40 Battery
The included BA 40 rechargeable battery is used to power compatible wireless tabletop devices. Before first use, the battery must be fully charged using one of the following methods:
- Using the optional CHG 2W charging base.
- Charging directly inside the tabletop unit via a USB cable.
Once fully charged, the BA 40 provides operating power for the device during normal use.
.jpg)
As a genuine Sennheiser accessory, the BA 40 is covered by the Sennheiser warranty policy with a 6-month warranty period in accordance with the manufacturer's current warranty terms.
.jpg)
If you need to check the condition of your battery or verify warranty eligibility, you may contact Hoang Bao Khoa, the official Sennheiser Service Center in Vietnam, or refer to the official Sennheiser warranty procedures for assistance.