4.2.3. Absorption
After the absorption voltage has been reached, the charger operates in constant voltage mode.
In case of adaptive charging, the absorption time is dependent on the bulk time, see section 3.2.
4.2.4. Automatic equalization
If automatic equalization has been set to ‘on’, the absorption period is followed by a second voltage limited constant current
period: see section 3.3. This feature will charge VRLA batteries to the full 100 %, and prevent stratification of the electrolyte in
flooded batteries.
Alternatively, manual equalization can be applied.
4.2.5. Float
After float charge the output voltage is reduced to storage level. This level is not sufficient to compensate for slow self-discharge
of the battery, but will limit water loss and corrosion of the positive plates to a minimum when the battery is not used.
4.2.6. Storage
After float charge the output voltage is reduced to storage level. This level is not sufficient to compensate for slow self-discharge
of the battery, but will limit water loss and corrosion of the positive plates to a minimum when the battery is not used.
4.2.7. Weekly battery ‘refresh’
Once a week the charger will enter Repeated Absorption-mode during one hour to ’refresh’ (i. e. to fully charge) the battery
4.3. Four stage charge curve for Lithium Iron Phosphate (LiFePo4) batteries
4.3.1. Bulk
Entered when the charger is started, or when the battery voltage falls below 13,5 V / 27,0 V (due to a heavy load) during at least 1
minute. Constant current is applied until absorption voltage is reached (14.2 V / 28.4 V).
4.3.2. Absorption
After the absorption voltage has been reached, the charger operates in constant voltage mode. The recommended absorption
time is 2 hours.
4.3.3. Storage
After absorption charge the output voltage is reduced to storage level. This level is not sufficient to compensate for slow
selfdischarge of the battery, but will maximize service life.
4.3.4. Weekly battery ‘refresh’
Once a week the charger will enter Repeated Absorption-mode during one hour to ’refresh’ (i. e. to fully charge) the battery.
Skylla-IP65
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Operation
