7KHEDWWHU\LVVXOSKDWHG,IWKHLQGLFDWRUVÀDVKHVIRUPRUHWKDQPLQXWHVWKHEDW
-
tery may be defective and should be replaced.
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high self discharge of the battery, indicating a bad battery.
CHARGING CYCLE
UC 800 has a four step fully automatic charging cycle. At the start of charging the bat-
tery charger delivers maximum current to the battery and the battery voltage increases
constantly to a set level of 7.2V. At this point the voltage will be regulated and kept con-
stant while the charging current is successively lowered. Once the charging current has
dropped below 0.4A the charger switches to maintenance charging.
If the battery is loaded and the battery’s terminal voltage drops to 6.45V the charger
automatically switches back to the beginning of the four step cycle. The charger requires a
reverse voltage from the battery of at least 3V to start the charging cycle, this means that
if the battery is so deeply discharged that the terminal voltage is lower than 3V the charger
cannot charge the battery in question. A normal discharged battery has a terminal voltage
of 5,25V.
Charging phases:
Desulphation
- Desulphation with pulsing for sulphated batteries.
Bulk
- Main charge when 80% of charging takes place. The charger delivers a constant
current until the terminal voltage has risen to the set level.
Absorption
- Complete charge up to virtually 100%. The terminal voltage is maintained
at the set level. During this phase the current drops successively so the terminal voltage
does not become too high. If the absorption phase has been in progress for more than 18
hours the charger switches to maintenance charging. This function prevents damage if the
battery is faulty.
Pulse - Maintenance charging.
Charging level varies between 95% and 100%. The bat-
tery receives a pulse when the voltage drops. Keeps the battery in perfect condition when
it is not used. The charger can be connected for months at a time.
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