2
12.8V
16V
STEP 7
CHARGE
State Of
Charge:
50% - 75%
1a
12.8V
1b
12 34
2
LiFePO
STEP 8
12.8V
16V
OPTIMIZE
cell
balancing
State Of
Charge:
75% - 100%
STEP 9
State Of
12.8V
Charge
12 34
1b
LiFePO
TEST
2
V
16V
5
4
STEP 10
3
OptiMATE
24-7
Bms
Bms
1a
1b
2
Maintain
12.8V
16V
LFP
8V
12 34
LiFePO
Bms
Bms
LFP
12.8V
12 34
LiFePO
NOTES ON TEST RESULTS: The voltage of a cooled battery is directly proportional to its State Of Charge
percentage (SOC%). Immediately following charging a battery may briefly hold a higher voltage, as charging
raises the temperature of chemical elements within the battery. A battery recovered from a deep discharged
state may need longer to cool and voltage to settle and reflect its true state of charge (SOC%).
1. For any test result other than green #6, disconnect the battery from the electrical system it supports, and
reconnect the OptiMate Lithium. If a better test result is now obtained, this suggests that the power losses are
partly due to an electrical problem in the electrical system and not in the battery itself.
6
8
5
LED #4 : BLUE
The ampmatic™ CHARGE program automatically determines
the most efficient rate of charge current for the connected battery,
4
according to its state of charge, state of health, and electrical storage
(Ah) capacity. The delivered current may be anywhere from 2.5A to
9.5A (16V: 7.5A) (within normal safeTº temperatures, see page 5).
3
For batteries with an electrical storage (Ah) capacity less than 10Ah
charge current is automatically adjusted lower to an average equal
Bms
Bms
to battery Ah capacity, e.g. a 2.5Ah / 2500mAh battery receive an
average of 2.5 Amps.
NOTE: For safety reasons there is an overall charge time limit of 24
LFP
16V
12 345
hours up to STEP 7.
7
8
4
LED #5 : BLUE
This final charge mode starts when the voltage has reached 14.4V
(16V: 18V) for the first time during STEP 7.
The ampmatic™ current control program now delivers pulses of
5
current to equalise the individual cells within the battery and optimizes
charge level.
4
Minimum charge time is influenced by initial State Of Charge as
measured during STEP 3, varying between 10 minutes for a battery
3
with 80% or higher state of charge to the maximum of 120 minutes for
a battery with 40% or less.
Bms
Bms
TEST after charge : Delivery of current to the battery is interrupted
LED #6 : GREEN
for 30 minutes** to allow the program to determine the battery's
ability to retain charge.
LFP
16V
6
12 345
7
4
8
LED #6 (green) will remain on for batteries able to hold 90% or
higher state of charge (SOC%), otherwise the TEST result is adjusted
lower (LED #7, LED #8) in real time according to the measured battery
voltage. Consult the table on page 2 to match TEST LED indication to
an estimated state of charge percentage (SOC%).
optimate1.com
Also read section "NOTES ON TEST RESULTS" below.
/oml12.8v16v
/oml12.8v16v
LED #6 / 7 / 8
The MAINTENANCE CHARGE CYCLE consists of 30 minute charge
periods followed by and alternating with a 30 minute 'rest' periods,
24-7
24-7
6
during which there is no charge current.
7
8
During the 30 minute* charge cycles current is delivered only if the
battery has lost charge.
5
optimate1.com
16V
* The charge cycle may be extended if high current draw is sensed and
12 345
/oml12.8v16v
/oml12.8v16v
4
will continue until current demand once again reduces below 1A.
4
3
The BATTERY REFRESH CYCLE is performed if the charger detects the
battery has suddenly lost significant charge. The program reverts to
STEP 8 (LED #5) before returning to STEP 9 and STEP 10 .
16V
Read section MAINTAINING A LITHIUM BATTERY FOR EXTENDED
12 345
4
PERIODS.
optimate1.com
/oml12.8v16v
/oml12.8v16v
24-7
24-7
6
optimate1.com
/oml12.8v16v
/oml12.8v16v
** IF charging started in SAVE mode (LED #3) the voltage retention
24-7
24-7
test is extended to 12 hours to confirm battery health.
MAINTENANCE CHARGE: LED #6 / 7 / 8 steady on
according to final voltage measured at termination of STEP 9.