Using The Heartware ® Batteries; Changing A Battery - HeartWare Ventricular Assist System Instructions For Use Manual

HeartWare
10.0 USING THE HEARTWARE
The batteries (Figure 54) contain lithium ion cells to power the HVAD
charged. The capacity of each battery in hours is based on:
Controller and HVAD ® Pump operating power consumption
◗ ◗
Number of battery charge and discharge cycles
◗ ◗
The batteries are expected to have a useful operating life of greater than 500 charge and discharge cycles. If a
battery provides less than two hours of support duration, it should be replaced.
Pressing the TEST BUTTON will light up the Battery Capacity Display.
The BATTERY CAPACITY DISPLAY will tell you how much power remains in the battery.
The Battery Capacity Display on the battery is similar to the Battery Indicator on the controller (see Section 9.0 "Using the
HeartWare Controller") except that only green lights are used on the battery. For example, at 25-49% capacity, 2 green
®
lights will be displayed on the battery while 2 yellow lights will be displayed on the controller (see chart below).
Battery Capacity Battery Capacity Display on BATTERY
75-100%
4 GREEN lights
50-74%
3 GREEN lights
25-49%
2 GREEN lights
<24%
1 GREEN light
nOTE: When one battery is depleted to <25%, the controller will automatically switch to the other battery. When
this happens, an intermittent "beep" will sound, the Alarm Indicator on the controller will be yellow and a
message will be displayed to replace the depleted battery (Figure 55).
If the battery is NOT changed within 5 minutes, the alarm volume will escalate until the battery is exchanged with a fully
charged battery. When a depleted battery is not exchanged and there are only a few minutes of battery time remaining in
both batteries, a high priority alarm will sound, the Alarm Indicator will flash RED and the message on the controller will
display "Critical Battery 1" or "Critical Battery 2." If this occurs, there are only a few minutes of power remaining before
the pump stops; therefore, the batteries must be replaced immediately.
CAUTION: Recharge fully depleted batteries within 24 hours to avoid permanent battery damage.

10.1 Changing a Battery

1) Make sure there is a fully charged battery available to replace the used or depleted battery.
Disconnect the depleted battery by turning the connector sleeve counterclockwise until it stops (follow arrow).
2)
3) Pull the connector straight out from the controller.
4) Grasp the cable of the fully charged battery near the connector leaving the connector free to rotate.
Line up the solid white arrow on the connector with the white dot on the controller (Figure 56A).
5)
6) Gently push the cable into the controller. DO NOT twist the connector, but allow it to naturally lock in place. A
successful connection will result in an audible click.
nOTE: When pushing the connector onto the controller the white arrow will shift slightly. Correct locking
position: White arrow aligned with white dot on controller.
7) Confirm that the battery cables are properly locked on the controller by gently pulling the cable near the controller
power connector (Figure 56B).
When connecting cables, DO NOT force connectors together without proper alignment. Forcing together
◗ ◗
misaligned connectors may damage the connectors.
Confirm that the power cables are properly locked on the controller by gently pulling the cable near the
◗ ◗
controller power connector.
I
16 HeartWare Ventricular Assist System
®
BATTERIES
®
® Pump for approximately 4 to 6 hours when fully
Battery Buttons and Indicators
Battery Indicator on CONTROLLER
4 GREEN lights
3 GREEN lights
2 YELLOW lights
1 RED light
CAUTION
Figure 54: Battery
Figure 55: Replace depleted battery message on
controller
A
Figure 56: Connecting power to controller
B