Datex-Ohmeda F-LM1 - 3 Functional Description; General

Battery Module, F-LBAT
3 FUNCTIONAL DESCRIPTION
3.1 General
The batteries are located in a battery module. The batteries can be inserted in the battery module
from the left side of the monitor. The battery module is designed for two batteries.
When the monitor is battery driven with two batteries, one battery is always discharged first. Less
charged battery is discharged first.
The batteries are charged with a constant current limited by external power supply.
A battery has a non-volatile memory for capacity meter, ID status and fault information.
NiCd
cells
Memory:
- capacity meter
- status/faults
- ID
T
LM battery
Batt voltage
Temperature
+ 5 V
clk
data
Figure 1 Battery block diagram
Document No. 890200-5
3