6
The instrument is powered by a lithium-ion battery, which is charged by
connecting a charger to the instrument’s USB communication output (or
other USB output with the specifications 5V/500 mA).
Please note that the instrument must be sent to a certified SPM ser-
vice and calibration partner for replacement of a discharged battery.
Charging the battery
The battery charge icon in the upper right corner of the Main display (A)
shows the current battery status. The icon turns red when the battery is
low (<10%) and needs recharging.
The battery should be charged in a dry office environment with a tem-
perature range within 0 to +45 degrees °C (0 to 113 °F). If the battery
is charged in an environment outside of specified temperatures, it may
be damaged.
A flash symbol to the left of the battery charge icon indicates that a
charging cable is inserted. When the battery charge icon is green, the
battery is charging. When it turns gray, the battery is fully charged.
Should the battery charge icon be full but in red color, something is
wrong with the charging system or circuitry, and the instrument needs
to be sent to SPM Instrument for service.
Extending battery life
Avoid deep cycling of the battery. Each cycle wears the battery down
by a small amount and a partial discharge is better than a full discharge.
Lithium-ion is maintenance-free and the battery lasts longest when
operating between 30 and 80 percent. Store the instrument partially
charged in a cool and dry place.
The battery will gradually self-discharge even if stored in a partially
charged state. Self-discharging increases with age, usage, and elevated
temperature.
The battery life may vary depending on how the instrument is used;
most battery-consuming are the Stethoscope and Listening functions.
Battery
A
Main display
B
Do not replace
the battery!
Refer servicing to your
local SPM dealer.
!
Battery low
Battery charging
Battery full
Faulty charging
system/circuitry
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