Optimate PRO 1 TM-650 Mode D'emploi page 8

Pb and LFP charge modes: If the temperature is below -20ºC/-4°F or above 55°C/131°F no charging will be
allowed. Follow instructions under section 'LED #8 blinking rapidly - ERROR!'.
LED #3 - LOW VOLT SAVE MODE
Charging starts here for a battery with voltage measuring less than 12.4V if a Pb / lead-acid battery or 13V if a
LiFePO battery, or if the charger was manually activated. Charging will continue through steps 4 to 6, during
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which continuous battery health testing is performed to ensure the battery is safely recovering. If a problem is
detected charging may be suspended and LED #8 will blink rapidly. Follow instructions under section 'LED #8
blinking rapidly - ERROR!'.
STEP 4 - SAVE, deep discharged battery below 8.8V. SOC<0%
Pb: Current starts at 200mA and delivered in pulses to determine if the sulphated battery is able accept
charge. Once confirmed charging will continue to STEP 5.
LFP: Current starts at 200mA and will increase as the voltage rises towards 8.8V. A healthy battery should
progress to STEP 5 within 2 hours.
STEP 5 - SAVE, discharged battery 8.8V or higher, able to accept charge. SOC≥0%
Pb: Current is varied between 0.2A and 1.25A, up to a voltage of 14.4V, for a maximum period of 2 hours.
LFP: Maximum current is set to 1.25A. The battery's charge acceptance is monitored for unusual behaviour
such as may be displayed by a battery with a short circuited cell.
STEP 6 - TESTING - The battery's ability to accept charge normally is monitored through-out STEP 4 and 5. A
final test may be performed as described below. If damage has been detected, charging will be suspended.
Pb: A healthy Pb battery should progress to STEP 7 within two hours, otherwise charging is interrupted for 2
minutes and the battery's ability to hold charge is monitored.
LFP: Once the voltage has risen to 13.1V charging is interrupted and the battery's ability to hold charge is
monitored for 2 minutes.
A healthy battery will progress to STEP 7.
LED #4 - BULK CHARGE SOC≥50%
Charging starts here for a battery with voltage measuring 12.4V for a Pb / lead-acid battery or 13V or higher for
a LiFePO battery.
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STEP 7 - The ampmatic™ CHARGE 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 (Ah)
capacity. The delivered current may be anywhere from 1.25A to 10A (within the safe ambient temperature
environment).
LED #5 - ABSORPTION CHARGE SOC≥75%
STEP 8 - Charging continues until 14.4V is reached after which the ampmatic™ current control program
delivers pulses of current for a period of 10 minutes, with voltage cycling between 14.1V and 14.4V to equalise
the individual cells within the battery.
NOTE: For safety reasons there is an overall charge time limit of 24 hours up to STEP 8, if exceeded, STEP 9
starts automatically.
LED #6 flashing - VOLTAGE RETENTION TEST
A test is conducted to determine serviceability of the battery. The open circuit voltage (OCV) of a battery is
directly proportional to its State Of Charge percentage (SOC%) after it has been allowed to settle/cool for 30
minutes or more. Immediately following charging a battery will briefly hold a higher voltage, as charging raises
the temperature and activity level of chemical elements within the battery. A settlement/cooling period is
required to attain a more accurate State Of Charge.
STEPS 9, 10 and 11 are the same for Pb (lead-acid) and LFP ( LiFePO
recorded during the test is different; LFP ( LiFePO
STEP 9 - Delivery of current to the battery is interrupted to allow the program to determine the battery's ability
to retain the charge it has received.
LED #6 (green) will continue flashing 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.
The test concludes when the TEST LEDs #6, #7 or #8 turn full on.
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), but the open circuit voltage (OCV)
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) hold a higher OCV voltage after charging.
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