5
STEP 2
Protection
Voltage
Error
Charger
will not
proceed
without
user
interaction!
LED #1a or #1b &
LED #3 flash
together
1
2.
8V
16
V
B
M S rese
t
16V
24-7
24-7
Bms
Bms
12.8V
12.8V
LFP
LiFePO
4
1234
12345
16V
/oml12.8v16v
optimate1.com
/oml12.8v16v
5
4
3
1a 1b
2
8
6
7
The battery is deep discharged OR the battery voltage does not match
the selected voltage.
(Battery voltage is lower or higher than is
considered normal).
1. Confirm battery's nominal voltage matches the selected voltage.
If not, disconnect charger from battery. Select correct voltage.
Reconnect battery to charger.
If it matches the selected voltage (16V), go to point 2 below.
2. For a deep discharged 16V battery (16V selected): Push and
hold button for at least 3 seconds until LED #1a / #1b and LED #3
turn full on.
The program automatically proceeds to STEP3.
3. Release pushbutton.
STEP 3
Preparing
to charge
Battery SOC check
Temp° chec
k
Immediately following connection to a battery there may be a 1-2
second delay before charging progresses, during which time:
Battery State Of Charge is measured to determine charge requirement
and duration of the State Of Health test in STEP 9.
A low battery will be
tested for 12 hours.
safeTº:
Ambient temperature is measured to determine safe charge
current parameters. See page 2 for temperature (°C/°F) and
corresponding Ampére (A) values.
STEP
4, 5 & 6
SAVE
State Of
Charge:
Less than
50%
LED #3 : RED
1
2.
8V
16
V
B
M S rese
t
16V
24-7
24-7
Bms
Bms
12.8V
12.8V
LFP
LiFePO
4
1234
12345
16V
/oml12.8v16v
optimate1.com
/oml12.8v16v
5
4
3
1a 1b
2
8
6
7
Time to save a
battery
STEP 4
V < 8.8V
(16V:
V < 11V
)
STEP 5
8.8V ≤ V ≤ 13.1V
(16V:
11V ≤ V ≤ 16.3V
)
STEP 6
TEST cell damage
The battery SAVE mode engages
if the battery is less than 50%
charged OR voltage is between 0.5 to 13.1 Volt
(16V: 0.5V <> 16.3V)
IMPORTANT: Read the section
VERY FLAT NEGLECTED BATTERIES
on
the preceding page.
A very flat battery should progress to STEP 7 within 4 hours, unless
damage has been detected, then charging will be suspended and TEST
LED #8 (red) will flash rapidly, indicating the battery may have suffered
permanent damage or a professional assessment is required.
VERY LOW VOLTAGE SAVE :
Current starts at 600mA and will
increase to 1.25A depending on charge progress. If the voltage did not
rise above 8.8V
(16V:
11V
)
within 2 hours, charging will be suspended
and the TEST LED #8 (red) will flash, indicating the battery may have
suffered permanent damage or a professional assessment is required.
LOW VOLTAGE SAVE :
Charge current is increased to 2.5A*. The battery's charge acceptance
is monitored for unusual behaviour.
*
Charge current is increased to 6A following a BMS reset.
A deep discharged battery that may not hold sufficient voltage to
power its own BMS system will automatically receive repeated BMS
reset pulses during SAVE mode so that charging may continue. If
charging did not continue, use the MANUAL CHARGE ACTIVATION mode
described under STEP 1.
TESTING (2 min) -
The battery's ability to hold charge is monitored. A
healthy LiFePO
4
battery will progress to STEP 7, otherwise charging
will be suspended and TEST LED #8 (red) will flash rapidly, indicating
the battery may have suffered permanent damage or a professional
assessment is required.
