Manual

REV D Page 13
constant float voltage to fully top up and maintain the battery in a fully charged state. The charger
will automatically restart the full charging cycle if it senses the battery bank is discharged to lower
than 12.5V for lead acid batteries and 13.3V for lithium batteries.
Similar to Three-Stage Charging, the Two-Stage Charging (Mode 2) has only Bulk and Absorption
charging stage. Charger will terminate battery charging once it reaches the Absorption to Float (“L”)
current setting. The charger will automatically restart the full charging cycle if it senses the battery
bank is discharged to lower than 12.5V for lead acid batteries and 13.3V for lithium batteries.
Manual Battery Temperature Compensation Setting
There are three manual battery temperature settings on the unit (‘Lo’, ‘nor’ and ‘hi’). Select the
proper setting based on the room temperature as per the following table. The unit is able to make a
more accurate and automatic temperature compensation when the optional BTS is connected to it.
See more details in the next section. If using Lithium batteries, always set the manual room
temperature to “nor” (Normal).
Temperature Setting
Existing Battery Room
Temperature
Battery Type
Voltage adjustment from 25°C
normal setting
Low (Lo)
< 5°C
GEL, Flooded
+0.675V
AGM
+0.525V
Normal (nor)
> 5°C and < 30°C
GEL, Flooded, AGM
(always for Lithium)
0V
0V
High (hI)
< 30°C
GEL, Flooded
-0.270V
AGM
-0.210V
Automatic Battery Temperature Compensation using the BTS
The Battery Temperature Sensor (BTS) is an optional accessory for the charger to protect your
battery and provide better charging voltage accuracy, by making small adjustments to it, based on
the temperature measured directly on the battery. No special setting is required. The unit
automatically detects when the sensor is plugged into its corresponding “BTS” jack port located in
the DC wiring compartment, and overrides the manual temperature setting (i.e. “Lo”, “Nor”, and
“Hi”). It is highly recommended to be installed on the main battery bank negative terminal.
With this optional feature, the charging voltage is automatically adjusted as per the following table.
Measured Battery
Temperature
Automatic Battery Charging Voltage Adjustment from 25°C
Flooded and GEL
type
AGM type
< 25°C
+0.027V / °C
+0.021V / °C
25°C
0V
0V
> 25°C
-0.027V / °C
-0.021V / °C
Additionally, the BTS allows the triggering of the E07 and A02 messages corresponding to the
battery over-temperature shutdown and alarm, respectively.
The BTS is not intended for Lithium batteries. If using Lithium batteries, always set the manual
room temperature to “nor” (Normal), and leave the BTS disconnected from the unit.
Procedure to Set or View Charger Setting
Follow the procedure or sequence in Appendix A1 and A2 (see back of this manual) to set or view
the charger setting.
Procedure to Equalize Flooded Battery
DANGER: Explosion Hazard. The battery generates explosive gases during equalization. Follow
all the battery safety precautions listed in the manual.
DANGER: Explosion Hazard and Risk of Battery damage. When using the equalization mode, the
user has to be sure the battery connected to the channel is a flooded battery type. Equalizing a
non-flooded battery may overcharge the battery and may cause the battery to explode.
CAUTION: Risk of Battery and Equipment damage. Only Flooded lead-acid batteries can be
equalized. Consult your battery manufacturer or read the battery manual when you try to
equalize your batteries. Disconnect any DC load connected to the battery, as during equalize
mode, the charger will produce 15.5V on 12V model, or 31.0V on 24V model, to the batteries.
You must monitor the battery-specific gravity throughout the equalization process to determine
the end of the equalizing cycle.
Note: The equalization function although included in the unit will rarely be used. To activate, the battery bank
must be in float stage, and stage activation is performed manually. A typical vehicle will not be long enough
for the unit function to complete the process. The MPPT Solar function may provide enough time for
Equalization, but the best recommendation will be using an AC powered battery charger. KISAE does
manufacture a line of smart AC battery chargers, please consult www.kisaepower.com.
Before setting the equalization mode, please be sure the battery is a flooded battery type. When