Sennheiser Evolution Wireless Digital BA 70 Rechargeable Li-Ion Battery

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The Sennheiser BA 70 is a lithium ion rechargeable battery pack for EW-D SK and EW-D SKM-S transmitters.

• Rated Capacity: 1720 mAh
• Nominal Voltage: 3.8 V
• Charging Voltage: max. 4.35 V
• Charging Time: typ. 3 h @ room temp.
• 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
• Relative Air Humidity:
  • Charging/Discharging: 25% to 95% non-condensing
  • Storage: 30% to 70% non-condensing
• Dimensions: 54 x 30 x 15 mm
• Weight: 33 g