Bedienungsanleitung Graupner Ultramat 18 - 6470 (Seite 38 von 92) (Deutsch, Englisch, Französisch)

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14. Pb (lead-acid) programs

This program is designed for charging and discharging lead / sulphuric acid and lead / gel

batteries with nominal voltages of exactly 2, 4, 6, 12 and 24 V (1, 2, 3, 6 and 12 cells).

Caution: the charger will not recognize lead-acid batteries with other nominal voltages, and

such batteries must not be connected to it.

Lead-acid batteries behave entirely differently to Ni-Cd and Ni-MH batteries. Lead-acid batteries

can only deliver relatively low currents relative to their capacity, and similar restrictions very

definitely apply to charging. Manufacturers usually state 14 to 16 hours for achieving nominal

capacity when recharging at the normal charge current. The „normal“ charge current is defined

as one tenth of the battery’s nominal capacity. Example: battery capacity = 12 Ah —> normal

charge current = 1.2 A. In contrast to Ni-Cd and Ni-MH batteries, lead-acid chargers generally

monitor the battery’s voltage in order to determine when it is fully charged.

Lithium type select program

This is actually the most important set-up program for

Lithium batteries. In the Select program you enter the

battery type and battery capacity. It is vital to enter this

information with the greatest care. Check it very thoroughly,

as the charger derives all the other charge parameters from

the settings you enter here.The battery type you select

(LiPo, LiIo or LiFe) affects the charge termination voltage. If you find that a Lithium battery has

unexpectedly been charged only to the 2/3 full mark, you have probably set the incorrect battery

type at this point.Caution: if you set an incorrect value at this point, the battery may be damaged

irreparably, and could even explode!

The final charge voltage can be adjusted in 0.01V steps.

The max. charge voltage for LiPo is 4.2V, for LiIo 4.1V, for LiFe 3.6V. To store the batteries, adjust

the charge voltage about 0.4V lower as the maximum charge voltage.

At charging/discharging the battery types will be displayed as followed:

LiPo (LiMn) = LP

LiIo = LI

LiFe = LF

MANUAL-

program

discharge

program

MODE MODE

________________

Lithium type

LiPo 4.20V/C

INC

DEC

Lithium cell count

________________

***LiPo cells***

2 cells ( 7.73V)

INC

DEC

When you have connected the battery to the charger, hold

the START button pressed in for about two seconds and

the screen will display the cell count of the Lithium pack. If

the pack contains 1 or 2 cells, the charger detects and

sets the number of cells fully automatically. If the pack

contains more than two cells, you may have to adjust the

cell count manually using the INC / DEC buttons, as the

automatic circuit is unable to detect more than three cells

reliably. On the right-hand side you will see the voltage of

the pack connected to the charger. Pressing the START

button again initiates the charge process. Only cell

number should flash. If cell number and battery voltage

are correct, press the Enter button to start.

! Caution ! Please take great

care to set the correct cell

count and battery type. If you

make a mistake, the battery

could explode and burst into

flames !

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