Battery Indicator And Battery Change; Low Battery; Flat Battery - Replacement; Which Batteries And Which Procedure - Microlife BR W3 Comfort Manual

5. Battery Indicator and Battery change

Low battery

When the batteries are approximately ¾ empty the battery symbol AQ
will flash as soon as the device is switched on (partly filled battery
displayed). Although the device will continue to measure reliably, you
should obtain replacement batteries.
Flat battery – replacement
When the batteries are flat, the battery symbol AQ will flash as soon
as the device is switched on (flat battery displayed). You cannot take
any further measurements and must replace the batteries.
1. Open the battery compartment 5 by pulling off the cap.
2. Replace the batteries – ensure correct polarity as shown by the
symbols in the compartment.
3. To set date and time, follow the procedure described in «Section 1.».

The memory retains all values although date and time must be
reset – the year number therefore flashes automatically after
the batteries are replaced.

Which batteries and which procedure?


Use 2 new, long-life 1.5 V, size AAA alkaline batteries.

Do not use batteries beyond their date of expiry.

Remove batteries if the device is not going to be used for a
prolonged period.

Using rechargeable batteries

You can also operate this device using rechargeable batteries.
BP W3 Comfort

Only use «NiMH» type reusable batteries.

Batteries must be removed and recharged when the flat
battery symbol appears. They should not remain inside the
device as they may become damaged (total discharge as a
result of low use of the device, even when switched off).

Always remove the rechargeable batteries if you do not intend
to use the device for a week or more.

Batteries cannot be charged in the blood pressure monitor.
Recharge batteries in an external charger and observe the
information regarding charging, care and durability.

6. Error Messages

If an error occurs during the measurement, the measurement is inter-
rupted and an error message, e.g. «ERR 3», is displayed.
Error Description Potential cause and remedy
«ERR 1» Signal too The pulse signals on the cuff are too weak. Re-
AN weak position the cuff and repeat the measurement.*
«ERR 2» Error signal During the measurement, error signals were
AO-B detected by the cuff, caused for instance by
movement or muscle tension. Repeat the
measurement, keeping your arm still.
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