CTEK PRO25S User Manual page 5

LITHIUM
Wake up
LITHIUM
13.0V Max 25A
Time limit: Max 10 minutes
STEP 1 ACCEPT
Tests if the battery can accept charge. This step prevents that charging proceeds with a
defect battery.
STEP 2 BULK
Charging with maximum current until approximately 90% battery capacity.
STEP 3 ABSORPTION
Charging with declining current to maximize up to 95% battery capacity.
STEP 4 ANALYSE
Tests if the battery can hold charge. Batteries that can not hold charge may need to be
replaced.
READY TO USE
The table shows the estimated time to charge a battery from empty to 80%
BATTERY SIZE (Ah)
40Ah
100Ah
200Ah
300Ah
1 2
Declining current
Max 25A until 13.8V
Max 30h Max 4h
TIME TO 80% CHARGED
1.5h
3h
6h
16h
3 4
Checks if voltage
13.8V drops to 12.0V
If start charge voltage less than 13.9V
3 minutes
STEP 5 COMPLETION
Final charge with reduced current.
STEP 6 MAXIMIZATION
Final charge with maximum voltage up to 100% battery capacity.
STEP 7 FLOAT
Maintaining the battery voltage at maximum level by providing a constant voltage charge.
STEP 8 PULSE
Maintaining the battery at 95–100% capacity. The charger monitors the battery voltage and
gives a pulse when necessary to keep the battery fully charged.
5 6
Max 3A 14.4V
Charge cycle
then max 2h restarts if voltage
7 8
13.3V 13.0V–13.8V
Max 25A 25A–3.0A
10days
Max 1h pulse
Auto pulse
10 days
drops
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