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charging following connection to a 12V battery -voltage below 4V or wrong output connections. Swap around to activate
output.
LED
#2 - Charge and charge verification
STEP1: PULSE LOW VOLT SAVE (from 4V) : Current up to 0.6A is delivered in pulses to prepare the battery to accept normal
charge. Charge time: Minimum 15 minutes, maximum 2 hours.
STEP2: CHARGE: The BULK CHARGE stage ( LED #2) delivers a constant current of about 0.6 Amps maximum into the battery,
up to a voltage of 14.2 -14.5V.
STEP3 : VERIFICATION: For 30 minutes the program verifies the charge level. If the battery requires further charging the
programme reverts to BULK CHARGE for brief periods, delivering a variable current pulse to the battery. These reversions
may occur as many times as is necessary to reduce the battery's current demand below 200mA at 13.6V (which is
consistent with a battery that has accepted as much charge as its basic condition allows). See expected Charging time
below.
NOTE: For safety reasons there is an overall charge time limit of 72 hours.
LED#
3 - STEP4 : Voltage retention tests alternating half-hourly with battery maintenance
Voltage retention test - For a battery able to remain above 12.4V throughout the voltage retention test - NO CHARGE CURRENT
- and 30 minute maintenance charge period, LED #3 remains on. If the battery voltage falls below 12.4V during the test the
program reverts to step 2.
Maintenance - float charge at a safe voltage limit of 13.6V and up to 0.6A is available to counter self-discharge.
The battery can draw current as required to support small loads and counter self-discharge. Maintenance and voltage retention
test periods continue alternating half-hourly until the battery is disconnected. If the battery voltage falls below 12.4V during the
float charge the program reverts to step 2.
NOTE 1: If LED#2 and #3 alternates every 1-2 seconds the battery may be in a sulphated condition and unable to initially accept
charge current. Monitor for 2 hours whilst the charger attempts to deliver charge to the battery. A lightly sulphated battery
may recover and accept full charge current as confirmed by a steady LED#2. If the condition remains unchanged the battery
may be in an advanced state of sulphation and that despite recovery attempts the battery was irrecoverable. This may be
due to a defect in the battery itself, such as a short-circuited cell or total sulphation, or, in the case of a battery still
connected to the vehicle's wiring system, it may be signalling a loss of current through deteriorated wiring or a degraded
switch or contact, or in-circuit current-consuming accessories. A sudden load such as the headlights being switched on
while the charger is connected can also cause the battery voltage to dip significantly. Always remove the battery from the
vehicle, reconnect the OptiMate
See www.optimate1.com for the appropriate OptiMate model able to recover batteries from advanced sulfation.
Maintaining a battery for extended periods:
at a time. At least once every two weeks, check that the connections between the charger and battery are secure, and, in the case of
batteries with filler caps on each cell, disconnect the battery from the charger, check the level of the electrolyte and if necessary, top
up the cells (with distilled water, NOT acid), then reconnect. When handling batteries or in their vicinity, always take care to observe
the SAFETY WARNINGS above.
Charging time:
The time required for the OptiMate 1 to complete a charge on a flat but otherwise undamaged battery is
roughly equal to 1.5x the battery's Ah rating, so a 32Ah battery should take no more than about 48 hours to progress to Step 3.
Deep-discharged batteries may take significantly longer.
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and allow it to proceed through its programme once more.
The OptiMate will maintain a battery whos basic condition is good, for months
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