The spherical dipole antenna operates on battery power so no metal wires or conductors will interfere with the repeatability and accuracy of the DRFS. A pair of Li-Ion batteries are installed inside the spherical dipole antenna to provide the power needed for the internal electronics. When fully charged, the batteries can provide power for up to 12-15+ hours of continuous use (depending on the clock frequency selected).

A push button switch on the spherical dipole allows the batteries in the spherical dipole to be turned on/off, allowing the useful battery life to be extended. When the power is switched 'on', a green LED on the sphere black ring is illuminated. An internal Low-Voltage detection circuit activates a relay to disable output battery power and enable a buzzer to indicate a Low Voltage state. Batteries require about 4-5 hours to fully recharge once completely depleted to this low voltage state.

The AC-DC power supply provided for battery charging is a regulated 9 VDC power supply, certified by international safety agencies. The standard AC-DC power supply provided has a complete set of interchangeable blades to satisfy global customers using most international AC outlet configuration.
Li-Ion Battery Charger Power Supply, International Blades, specifications for AET P/N 20118:

• Universal Input Power: 90-264VAC, 50-60Hz, 18 Watts
• AC plug: Interchangeable Blades for wide range of International configurations
• Output Power: 9VDC at 2.0 A, regulated
• Output Connector: 0.7x2.35mm DC power plug, rating 16V at 3A
• Protections: Over Voltage and Short Circuit
• Safety Approvals: UL/cUL, GS, RCM, CCC, PSE
• Case Style: Wall Plug-In