SEALED ENERGY SYSTEMS
®
11
User Manual
3.2.2. DC Specifications
PARAMETER
LIMITS
REMARKS
Active mode current
consumption
<650
µ
A
When a host is detected
(charging, discharging or
communications)
Standby mode current
consumption
<140
µ
A
When no host activity is
detected
Shut-down mode
current consumption
<1
µ
A
Any cell voltage falls below
2300mV
3.2.3. Measurement Accuracy
3.2.3.1. Voltage
The voltage measurements have a resolution of 1mV. The
absolute accuracy of the reading is ±0.7% over the operating
range. Note that measurements are made at the cell stack
(not the pack connector). Therefore, internal resistance drops
due to the shunt, safety components, and contact resistance
are not taken into consideration.
3.2.3.2. Temperature
The internal pack temperature is measured by an NTC
thermistor attached to the cell stack. Temperature
readings have a resolution of 0.1°K. The absolute
accuracy is ±3°K over an operating range of -20°C to
+80°C.
3.2.3.3. Current
The current measurements have a resolution of 1mA.
The absolute accuracy of the reading is ±0.7% or ±3mA
whichever is greater over the operating range. A guard
band has been imposed around zero current (-3mA to
+3mA).
3.2.4. LED Indication
The battery can directly display the capacity
information. The battery capacity is displayed as the
relative SOC. Each LED segment represents 25 percent
of the full charge capacity. The LED pattern definition is
given in the table below. The LED’s illuminate for 4
seconds following switch activation. If the battery
voltage is too low, there will be no LED indication.
