TCE Group S.r.l.
Installation, use and maintenance manual
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Serie KRONOS
22
Charging curves
The standard curve installed inside the NEOS Series battery chargers is divided into different stages.
In each stage the charging current is subject to a predefined variation based on the type of battery (Lead, AGM, GEL, etc). Any
special curves are agreed in advance with the technical department.
The stages of the standard charging curve are:
• S1
- The current rises slowly (soft start) until the maximum nominal current is reached
• S2
- The maximum nominal current is kept constant until the voltage required by the type of battery is reached (ex. 2.4V/Cell in
case of lead acid batteries)
• S3
- Upon reaching the predetermined threshold, the current drops to 2/3 of the maximum nominal current until the second
predetermined threshold is reached (ex. 2.55V/cell in the case of lead acid batteries)
• S4
- Upon reaching the second pre-set threshold, the current drops to 1/3 of the maximum nominal current until reaching the
final voltage based on the type of battery (ex. 2.68V/Cell in the case of lead batteries)
• S5–
The battery charger maintains constant voltage and varies the current until the charge is completed
Final charging voltages
Battery Type
Final charging voltage
Lead Acid “heavy duty”
2,68 V/cell
Lead Acid “light duty”
2,4 V/cell
GEL
2,35 V/cell
AGM1
2,38 V/cell
AGM2
2,45 V/cell
LED Visualizations
LED Color
Color pattern
Status
LED is off
The charger is off
Breathing blue
Waiting for battery connection
Red still
Charging cycle in Bulk phase (0-80%)
Yellow still
Charging cycle in ABS phase (80-100%)
Green still
Charging cycle in floating (Equalization not
active)
Blue still
Equalization
