Battery Specifications
The E7495A/B Base Station test set uses the Inspired Energy NI2040AG Smart Battery, which produces 10.8 volts DC at approximately 6000 mA. The NI2040AG is a Lithium Ion battery pack, which uses the System Management Bus (SMBus) interface to communicate with the test set and charger. To charge the batteries, use only the Agilent approved SMBus charger of Level II or higher or the E7495A/B.
External charging voltage is 18 V to 24 VDC.
The battery is designed for approximately 300 full charge/discharge cycles at room temperature and under normal rates of discharge.
The NI2040AG uses electronically programmable read-only memory (EPROM) to store key data regarding the battery cells and charge capacity.
Protection Electronics
The NI2040AG SMBus battery uses several protection devices to prevent damage to the battery and test set. The battery is internally protected against excessive current draws and reduced loads (shorts), excessive voltage and temperatures.
During charging and discharging, the battery will monitor and report its voltage, current, and temperature. If any of these monitored conditions exceeded their safety limits, the battery will terminate any further charge or discharge until the error condition is corrected.
Test Set Operation: Battery Current Drain in the Off or Standby Mode
The E7495A/B provides two "powered down" modes: off and standby.
When the test set is operating from battery power, it continues to draw current in both off and standby modes.
Standby Mode:
Off Mode:
- For Test Sets with a Serial Number Prefix of MY4636xxxx and above, when in Off mode, the test set draws 7 mA, or 3% of a full battery charge in a 24-hour period.
- For Test Sets with a Serial Number Prefix lower than MY4636XXXX , when in Off mode, the test set draws 45 mA, or 18% of a full battery charge in a 24-hour period
- Agilent recommends that if the test set is not going to be used for an extended period of time, you periodically check and maintain the batteries' charge, or remove the batteries from your test set. This will ensure you have sufficient battery capacity if you intend to operate the test set from battery power.
Battery Drain when in Off and Standby Modes
The following table shows how long a test set can be left in Standby or Off modes before the battery fails to provide enough current to operate the test set.
The times stated are based on fully charged batteries operating at full capacity. If the batteries are not fully charged, then the times are reduced in proportion to the Battery Charge %.
Battery and Charger Part Numbers
Standard Supplied Accessories
Description
Part Number
AC/DC Converter
0950-4404
NI2040AG Battery
1420-0883*
Optional Accessories provided in E7495A/B Option 820
Description
Part Number
Charger 12 V at 1 A
0950-4276
AC/DC Converter
0950-4404
Auto Adapter F1455A
0950-4412
NI2040AG Battery
E7495A
E7495B
1420-0883
1420-0883
NOTE: * Replace only with NI2040AG or equivalent, Agilent-approved battery.
Additional batteries are also available directly from Inspired Energy, Inc. To purchase additional or replacement batteries, visit www.inspired-energy.com, or call toll free USA 1-888-5-INSPIRE (546-7747).
NOTE: Regarding the battery charger and conditioner:
- Install the instrument so that the ON / OFF switch is readily identifiable and is easily reached by the operator. The ON / OFF switch and the detachable power cord are the instrument disconnecting devices. They disconnect the mains circuits from the mains supply before other parts of the instrument. Alternatively, an externally installed switch or circuit breaker (which is readily identifiable and is easily reached by the operator) may be used as a disconnecting device.
- Install the instrument so that the detachable power cord is readily identifiable and is easily reached by the operator. The detachable power cord is the instrument disconnecting device. It disconnects the mains circuits from the mains supply before other parts of the instrument. The front panel switch is only a standby switch and is not a LINE switch. Alternatively, an externally installed switch or circuit breaker (which is readily identifiable and is easily reached by the operator) may be used as a disconnecting device.