Beurer BM 85 - Battery and Technical Specifications; Battery Status and Charging; Measurement Accuracy and Operating Conditions

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11. Battery
The BM 85 is equipped with a lithium ion battery (3.7V/400
mAh). If the
symbol flashes, you must charge the battery
for a minimum of two hours using the enclosed cable. Re-
charge the battery to between 50 and 75 % of its capacity at
least twice a year to achieve a maximum battery service life.
Device charged (75% - 100%)
Device charged (50% – 75%)
Device charged (25% - 50%)
< 25%
You can take a maximum of 10 measurements
(flashes)
12. Technical specifications
Model no. BM 85
Measurement
method
Oscillometric, non-invasive blood pres-
sure measurement on the upper arm
Measurement range Cuff pressure 0 – 300 mmHg,
systolic 60 – 260 mmHg,
diastolic 40 – 199 mmHg,
pulse 40 –180 beats /minute
Display accuracy Systolic ± 3 mmHg,
diastolic ± 3 mmHg,
pulse ± 5 % of the value shown
Measurement inac-
curacy
Max. permissible standard deviation
according to clinical testing:
systolic 8 mmHg / diastolic 8 mmHg
Memory 2 x 60 memory spaces
Dimensions L 180 mm x W 99 mm x H 40 mm
Weight Approximately 456 g (with cuff)
Cuff size 22 to 42 cm
Permissible operating
conditions
+ 10 °C to + 40 °C, ≤ 90 % relative humi-
dity (non-condensing)
Permissible storage
conditions
-20 °C to + 55 °C, ≤ 90 % relative humi-
dity, 800 –1050 hPa ambient pressure
Power supply DC 5 V
600mA lithium ion battery
3.7 V/400mAh
Battery life For approx. 50 measurements, depen-
ding on levels of blood pressure and
pump pressure
Classification Internal supply, IPX0, no AP or APG,
continuous operation, application part
type BF
Data transfer
2402 MHz – 2480 MHz frequency band
Transmission power max. 2.8 dBM
The blood pressure monitor uses Blue-
tooth
®
low energy technology
Compatible with Bluetooth
®
4.0 smart-
phones/tablets
List of supported smartphones/tablets