Sennheiser BA 70 Overview
The Sennheiser BA 70 is a rechargeable lithium-ion battery pack for the EW-D SK bodypack and EW-D SKM-S handheld transmitters. It can be used in place of the two AA size batteries to provide up to 12 hours of operation.
The L70 USB dual-charging station (available separately) is required for BA 70 batteries.
Sennheiser BA 70 Specs
| Type | Lithium-Ion |
| Capacity | 1720 mAh |
| Voltage | Nominal: 3.8 V
Charging: 4.35 V, Max |
| Charging Time | 3 Hours at Room Temperature |
| Temperature Range | Charging: 32 to 131°F / 0 to 55°C
Discharging: 14 to 131°F / 10 to 55°C
Storage: 14 to 113°F / -10 to 45°C |
| Humidity (Relative) | Charging/Discharging: 25 to 95%, Non Condensing
Storage: 30 to 70%, Non Condensing |
| Dimensions | 2.1 x 1.2 x 0.6" / 54 x 30 x 15 mm |
| Weight | 1.2 oz / 33 g |
