When you install the battery, the screen tells you whether or not a data card is installed. If so, a screen message displays how much recording time is left until the data card is full. (See Chapter 7, “Data Management and Review,” for
how to review the incident information from the internal memory of the FR2+ 
or from a data card, if one is used.)
N O T E : The data card is typically capable of storing a number of incidents. However, it is recommended that it be replaced after every use. In the unlikely event that the card fills up during an incident, no further data can be recorded, so it is important for you to monitor the CARD FULL IN... information on this screen.
Screen contrast can be adjusted during the battery insertion selftest by using the Option buttons.
If battery power is low, replace the battery. If a previous selftest has failed, the screen displays a message that the FR2+ must pass a selftest before being used.
It is recommended that you always have a spare battery available. However, if a screen display prompts you to replace the battery or the Status Indicator shows a flashing red X, but you do not have a spare battery, you can continue to use the FR2+ until the battery is completely depleted. This may be necessary in an emergency.
N O T E : It is recommended that the M3848A FR2+ rechargeable battery not be used as a spare or backup battery.
N O T E : If you connect defibrillator pads (that are applied to the patient) or the FR2+ ECG assessment module to the FR2+ during a battery insertion selftest, the selftest will stop and the FR2+ will go to its standby mode to be ready for use.
During the automatic part of the selftest, the screen displays a bar that fills in as the test continues. When that part of the test is finished, the FR2+ beeps. The results of the selftest are automatically recorded on the data card while the tests are running, if a data card was inserted in the FR2+ prior to installing the battery.
If the automatic part of the selftest fails:
P hili ps Me dical Sy stems