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STEP 6
LED #4 :BLUE
CHARGE
4
State of
charge:
50% - 75%
STEP 7
LED #5 : BLUE
S
OPTIMIZE
5
(pulsed
absorption /
final charge)
State of
charge:
75% - 100%
STEP 8
LED #6 : GREEN
TEST after
CHARGE
STEP 9
LED #6 / 7 / 8
24-7
24-7
OptiMATE
24-7
Maintain
For batteries with a
good state of health LED
#6 (green) will remain
on.
Exception: STD wet cell
batteries with filler caps
have a lower fully
charged voltage: LED
#6 remains on together
with LED #7.
VERY FLAT NEGLECTED BATTERIES: If the battery is deeply discharged (and possibly sulfated), remove
from the vehicle or equipment and inspect the battery before connecting the charger for a recovery
attempt.
The charger's TURBO recovery mode cannot engage if it senses that the battery is still connected to a
circuit which effectively offers a lower electrical resistance than the battery on its own. However, if the
deep-discharged battery is not removed for recovery, neither battery nor vehicle or equipment electronics will
be damaged. Pay particularly close attention to the following A battery left deep-discharged for an
Engages if the battery state of charge is 50% or higher or once
the battery has been sufficiently recovered during STEP 5.
The ampmatic™ charge current monitoring and control program
automatically determines the most efficient rate of charge current
for the connected battery, according to its state of charge, state of
health, and electrical storage capacity.
Engages when the voltage has reached 14.4V (14.7V) for the
first time during STEP 6.
The ampmatic™ current control program now delivers pulses of
current to equalise the individual cells within the battery and
optimize charge level.
Charge time during this step varies between 10 and 120 minutes,
influenced by initial battery State Of Charge and health as measured
in STEP 3, and current draw by connected circuitry.
For safety reasons there is an overall charge time limit of 72
hours for STEPS 4 to 7.
TEST after charge : Delivery of current to the battery is
interrupted for 30 minutes** to allow the program to determine
the battery's ability to retain charge.
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7
** IF charging started in SAVE mode (LED #3) the voltage retention
8
test is extended to 12 hours to confirm battery health.
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 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%).
Also read section "NOTES ON TEST RESULTS" below.
Float voltage setting: 13.6V nominal at 20°C (68°F) The float
voltage is inversely regulated according to ambient
temperature; i.e., voltage is increased at lower temperature,
decreased at higher temperature.
Adjustment: -0.04V / cell / °C above or below 20°C (68°F).
OptiMate 24-7 maintenance mode consists of 30 minute float
charge periods followed by and alternating with 30 minute 'rest'
periods, during which there is no charge delivered. This "50% duty
cycle" prevents loss of electrolyte in sealed batteries and minimizes
gradual loss of water from the electrolyte in batteries with filler caps,
optimizing the service life of irregularly or seasonally used batteries.
During "float charge" a continuous LOW CURRENT PULSE IS
DELIVERED TO PREVENT SULFATION, further extending battery
power and life.
If the OptiMate senses the battery has suddenly lost charge the
program will revert back to STEP 7.
MAINTENANCE CHARGE: LED #6 / 7 / 8 steady on
according to state of charge measured during STEP 8.
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