SD3 Series Ultrasonic Pocket Doppler User Manual Basic Operation
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battery symbol flashes. Approximately five minutes later, the Doppler shuts down automatically.
You should replace the batteries or charge the rechargeable batteries.
3.6.2 Replacing Alkaline Batteries
CAUTION
Make sure the Doppler is shut down before charging the battery or opening the battery
compartment.
When the alkaline batteries are low in energy, they should be removed from the main unit, by
using the procedures described in section 3.2 Installing/Replacing Battery. Dispose of them
according to local regulations.
New alkaline batteries with identical specifications are required. Install them to the Doppler as
introduced in section 3.2.
WARNING
DO NOT CHARGE THE ALKALINE BATTERY.
3.6.3 Charging the NI-MH Batteries
When the rechargeable NI-MH batteries are low in energy,
1) Take the NI-MH batteries out from the main unit by using the procedures described in
section 3.2 Installing/Replacing Battery.
2) Replace them with new batteries of identical specifications, or charge them with the
provided charger.
To charge the rechargeable NI-MH batteries,
1) Fit the NI-MH batteries in the charger slots properly. Make sure the direction of the
batteries complies with the polar marks in the slots.
2) Plug the charger into an AC power supply socket. During charging, the indicators of the
corresponding charger slots light up in red.
3) When the charging indicators turn green, the batteries are fully charged (about 5 hours
are needed). Take the batteries out from the charger and reinstall them to the Doppler.
The specifications of the provided charger are as follows:
Input: AC 100-240 V, 50/60 Hz
Output: 1-2 AA@1000 mA, 3-4 AA@500 mA
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