SEALED ENERGY SYSTEMS
®
18
User Manual
Battery Critical Messages
Function
Command
Code
Description
Unit Access
Alarm
Warning()
0x16
This message is to the host and/or charger to
notify them that one or more alarm conditions
exist.
word
W
Alarm Bit Definitions
Bit Battery Status
Set When:
Action When
Set:
Cleared When:
15
OVER_CHARG
D_ALARM
Remaining Capacity() exceeds
Full Charge Capacity()
+
300mAh.
Stop
charging.
A continuous discharge
of >= 300mAh.
14
TERMINATE_C
HARGE_ALARM
Primary Charge Termination,
Cell Over-Voltage (COV),
Over-Current Charge (OCC),
Over-Temp Charge (OTC)
conditions.
COV = 4300mV
OCC = 3500mA
OTC = 58ºC
Stop
charging.
Relative State of
Charge() <= 95%,
COV, OCC or OTC
recovery threshold.
COV recovery <=
4150mV
OCC recovery <=
200mA for 70 sec
OTC recovery <= 56
O
C
13 Reserved
12
OVER_TEMP_
ALARM
Over-Temp Charge (OTC) or
Over- Temp discharge (OTD)
condition. OTC=58ºC
OTD=75ºC
Appropriate
FET will be
disabled.
OTC or OTD recovery
threshold. OTC
recovery =56ºC
OTD recovery =65
O
C
Bit Battery Status
Set When:
Action When
Set:
Cleared When:
11
TERMINATE_DI
SCHARGE_ALA
RM
Relative State of Charge() <=
0%, Cell Under-Voltage (CUV)
Over-Current Discharge
(OCD), Over-Temp Discharge
(OTD) conditions
CUV = 2400mV
OCD = -6250mA
OTD = 75
0
C
Stop
discharging.
Relative State Of
Charge() >= 1%, CUV,
OCD or OTD recovery
threshold. CUV
recovery >= 3000mV
OCD recovery >= -
200mA for 70sec OTD
recovery <= 65ºC
10 Reserved
9
REMAINING_
CAPACITY_
ALARM
(User settable)
Remaining Capacity() <
Remaining Capacity Alarm().
User
defined.
Remaining Capacity
Alarm() = 0 or
Is<= Remaining
Capacity().
8
REMAINING_TI
ME_ALARM
(User settable)
Average Time To Empty() <
Remaining Time Alarm().
User
defined.
Remaining Time
Alarm() = 0 or
<=Average Time To
Empty().
Status Bit Definitions
Z
Battery Status
Set When:
Action When
Set:
Cleared When:
7 INITIALIZED
None.
6 DISCHARGING
Battery is not in charge
mode.
None.
Battery is in charging
mode.
5
FULLY
CHARGED
When the battery detects a
primary charge termination.
Stop
charging.
Relative State Of
Charge() <= 95%.
4
FULLY
DISCHARGED
Relative State of Charge()
<= 0%.
Stop
discharging.
Relative State Of
Charge() >= 20%.
