Optimate Pro4 Duo Instructions For Use Manual Download

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hold finger on selection button for 10 or more seconds until LED #3 turns full on.

The program now continues

directly to STEP 4. Remove finger from pushbutton.

STEP 2 & 3 - Battery State of charge & ambient temperature

Battery voltage is measured to determine State Of Charge (SOC) and the initial charge step.
LFP mode: The charge program limits charge current if the temperature measured at the OptiMate is equal or

below 0ºC / 32ºF or above 45ºC / 113ºF. If the temperature was initially below 0ºC / 32ºF charge current is

limited for the first hour after which the battery is expected to have increased its internal temperature.
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

Pb / LFP selection - 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 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.

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.

NEW mode: Charging automatically progresses to STEP 7 when the battery voltage reaches 13.1V.

LED #4 - BULK CHARGE

SOC≥50%

Charging starts here: 1) if 60' selection was made, or if no selection was made prior to connecting the battery,

or 2) if Pb or LFP selection was made and the connected battery measures 12.4V or higher for a Pb / lead-acid

battery or 13V or higher for a LiFePO

battery.

STEP 7 -

The

ampmatic

™ CHARGE program automatically determines the most efficient rate of charge