Physio Control LIFEPAK 12 Manual

Coin-cell battery replacement

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LIFEPAK 12 Coin-cell battery replacement

Besides the Time and date, the LIFEPAK 12 has a coin-cell battery that holds both

hardware and user configurations in its NVRAM. The main batteries and/or the

separate power supply allow power-on access to setting user configuration, but will

not hold the memory when the coin-cell is removed. Physio-Control, Inc.

recommends replacing the LIFEPAK 12 coin-cell at 5-year intervals to avoid costly

service rep intervention. During replacement, it is imperative to maintain power

across the coin-cell slot.

First, here is a drawing that indicates the orientation of the coin-cell battery, the

connector where ground is accessed, and the placement of the surrogate power

supply:

Connect your negative lead to pin 1 of the two rows of test-points on the header

near the bottom of the System PCBA. Connect the positive lead to the clip that

holds the battery into the coin-cell slot – this is the positive side.

Use of non-conductive tools is always recommended to avoid delivery of unwanted

power to susceptible components.

Table of Contents

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Page 1 LIFEPAK 12 Coin-cell battery replacement Besides the Time and date, the LIFEPAK 12 has a coin-cell battery that holds both hardware and user configurations in its NVRAM. The main batteries and/or the separate power supply allow power-on access to setting user configuration, but will not hold the memory when the coin-cell is removed.
Page 2 WARNING: Avoid allowing the positive coin-cell contact from coming into contact with the negative side. Doing so will result in configuration loss. Here is one method of making a surrogate power source:...