Operating instructions

LIFEPAK 500 Automated External Defibrillator Operating Instructions 5-9

Maintenance

5 Maintenance

Discharging Nonrechargeable Batteries

Before disposing of lithium battery paks, make sure that they are fully discharged. To discharge a

lithium battery pak, follow this procedure:

1 Place the battery pak with the label side up on a firm, flat surface such as a table top or floor.

2 Locate the small slot on the corner marked by the arrow:

3 Place the tip of a flat-tipped screwdriver on the slot.

4 Using a hammer, strike a moderate blow straight down on the top of the screwdriver handle. Make

sure that the tip of the screwdriver breaks the label and penetrates approximately 3 mm (1/8 inch).

This will strike an internal pin, initiate full discharge, and permanently disable the battery.

5 Set the battery pak aside. Wait for at least 1 week to make sure that the battery pak is fully

discharged before disposing.

Disposing of Nonrechargeable Batteries

After fully discharging a lithium battery pak as described previously, dispose of the battery pak. Follow

your national, regional, and local regulations for disposal. Contact a local Medtronic Physio-Control

representative for more information.

In the US, Environmental Protection Agency and Department of Transportation regulations allow

disposal of lithium batteries with ordinary household waste provided that they are fully discharged.

Be sure to comply with any other local or regional regulations before disposal. For more information or

assistance, contact your local Medtronic Physio-Control representative or call 1.800.442.1142.

Rechargeable Battery Pak

The rechargeable SLA battery pak requires more maintenance than a lithium battery pak since it must

be recharged periodically. The SLA battery pak should be recharged monthly or after each use. SLA

battery paks are most appropriate when the LIFEPAK 500 AED is used on a frequent basis and for

those who use the AED with a simulator for training. With an SLA battery pak installed, the LIFEPAK

500 AED automatically turns on to test it as part of the Extended Auto Test. To check the battery level,

turn on the AED and look for the

BATTERY OK message during the self-test.

When optimally maintained, a new SLA battery pak can provide approximately 3 hours of “on time”

59 discharges during 3 months of use without recharging the battery. Just turning the AED on (“on

time”) uses up battery capacity. Each month, battery capacity decreases while the battery is in the AED

because of the battery’s normal self-discharge rate and the energy used by the AED self-tests. Figure

5-3 shows the expected capacity of the SLA battery pak without recharging over 3 months as a result of

AED self-tests and battery self-discharge only. For example, after one month with no patient use of the

AED, approximately 20% of the useful life of the battery has been depleted. Any patient use of the AED

(“on time” and shocks) will reduce the capacity further. Even when properly maintained, SLA battery

paks should be replaced every two years or after 200 charge cycles, whichever comes first.

BATTERY PAK

LIFEPAK 500

NONRECHARGEABLE

PHYSIO-CONTROL

Slot

Nonrechargeable

lithium battery pak label