CTEK MULTI US 25000 User Manual download pdf (Page 7)

US • 7

BATTERY TYPES AND SETTINGS

MULTI US 25000 can easily be set for different types of batteries or conditions. The fol-

lowing recommendations should, however, only be seen as guidelines. Please consult the

battery manufacturer for further instructions.

Settings are made by pressing the ”MODE-button” and stepping forward one press at a

time until the required mode is reached, the button is then released. After about 2 seconds

the charger activates the selected mode. The selected mode is saved in a memory in the

charger and remains even if the charger is switched off.

NORMAL

Mode 14.4V - Normal setting for wet batteries, Ca/Ca, maintenance free and

for most Gel batteries. Some Gel batteries prefer a slightly lower charging

voltage. Please consult the battery manufacturer when in doubt.

SUPPLY

Mode 13.6V / Supply - The charger is operating at a constant voltage of

13.6V. This is the maintenance mode for applications where maximum ca-

pacity from the battery is important. Note that the Spark protection function

is suppressed in this mode.

RECOND

Mode 15.7V / 3A / 0.5–4h - This mode is used to recover deeply discharged

wet batteries where you could expect a stratiﬁed acid (high acid weight in

the bottom, low on top). This mode will also recover some spiral cell AGM

batteries that has been deep cycled. Check with battery manufacturer when

in doubt.

Note that the battery has to be fully charged ﬁrst. Use this mode with care,

because the high voltage will cause some water loss. 16V is normally no

problem for electronics, but consult your supplier when in doubt. Life of light

bulbs will be reduced at higher voltage. Try to avoid using 12V light from the

battery during this phase. Maximum effect and minimum risk for electronics

is achieved by charging a disconnected battery.

CHARGING

The battery charger must be connected to the battery according to

the instructions above.

Start charging

1. Connect the power cord to the power outlet.

2. Set the proper charging mode by pushing the Mode button until the correct setting.

Choosing settings for your battery is described under ”BATTERY TYPES AND

SETTINGS”.

CTEK MULTI US 25000 User Manual Page 7