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4-1-5. Equalization charging
The intent of this charging procedure is active between abs and float is to remove sulfation that formed as a
result of the batteries being undercharged.
Another objective is to bring all cells to an equal state of charge. While Equaliztion charging，the charge voltage
increase to 15.5V@12V series / 31.0V@24V series continue a cycle is 240 minute(automatic shutdown). The
frequency of the equalizing charge is something that each battery manufacturer differs on. For example,
some will recommend be applied every month or every ten cycles, while another will recommend every six
months or every 20 cycles.
4-1-6. Temperature compensated charging
The unit is delivered with a battery temperature sensor. By installing this battery temperature sensor the charge
voltages are automatically adapted for deviating temperature.
With a BTS (battery temperature sensor) installed, if the temperature around the BTS is below 20°C the absorb
and float charge voltage increases, and if the temperature around the BTS is higher than 20°C, the absorb and
float charge voltage decreases. See Fig.11 to determine how much the charge voltage changes (increases or
decreases) depending on the temperature reading of the BTS. For example, the nominal absorb charge
voltage for a flooded battery at 20°C on a 12-volt model is 14.6 VDC. If the battery temperature is 35°C, the
absorb charge voltage would decrease to 14.225 VDC (14.6 - 0.375 ). If the temperature sensor is NOT
installed, the charge voltages will not be automatically adjusted by temperature, but will be maintained at a
temperature of 20°C. The life of the batteries may be reduced if they are subjected to large temperature
changes when the BTS is not installed.
：
Fig. 16
Temperature compensation using BTS
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