33
Charging cycles
One cycle is counted when the battery has been discharged by the capacity set in the cycle depth (see section 4.3) and then
recharged. With the number of cycles, you can estimate the life of your battery. Standard starter batteries have a lifespan
of 30-50 cycles, while cycle batteries have a lifespan of up to 300 cycles if a modern battery charger is used. These values
can only be achieved with proper care and deteriorate rapidly in case of mistreatment.
Deep discharges
Every complete discharge
down
to the voltage lower limit (about 11.0 V) is considered as a deep discharge. Deep
discharges should be avoided at all costs as they damage the battery, lead to premature capacity loss and lifetime
reduction for most battery types. However, should a deep discharge occur, the battery must be recharged immediately to
avoid further damage.
Lost capacity
If the battery voltage prematurely drops below certain voltage thresholds depending on the load, the charge state is
automatically set to 20% (critical discharge) or 0% (deep discharge). In these cases, if possible, the unavailable capacity
(difference between nominal capacity and withdrawn capacity) is determined as lost capacity. This can be used as an
indicator for the aging of the battery during normal discharges of less than C10 (rated capacity / 10). For high current loads
in the range above C5 (e.g., electric boats where currents are greater than 20% of rated capacity) this should be taken as an
indicator of the usual reduced capacity at high loads. If the battery is never discharged to its critical discharge limit, this
detection cannot take place and it is assumed that the battery is 100% intact.
Average discharge rate
The mean depth of discharge indicates by which capacity rate the battery has been discharged on average over the last 4
cycles. This parameter informs the user about the way the battery is cycled.
6
ADDITIONAL
NOTES
•
Please ensure that
no load and no charging device are connected directly at the batteries negative pole
. There shall
be only one connection at negative battery pole running to the shunt “B –”, nothing else. If not, the state of charge
calculation will be wrong! Please ensure that all charging devices like engine, battery charger or solar have a positive
current value.
•
If the
message "not synchronized"
does not disappear
despite 100% full charge
of the battery, this can be achieved
manually by making a long press until BEEP sound.
•
Full battery detection does not work.
Please check the charging voltage of your battery charger / solar system and set the battery type to Open Lead to
work with the lowest possible values. Please check whether each charging source is recognized correctly. Please
check if every charging source is recognized correctly. Charging currents are always positive when all consumers are
switched off. This must be checked individually for each charging source.
