SP60/SP80 User Manual V1.3
TBB Power Co.,Ltd
9
2.3 Battery charging control
With built in TBB premium II charging algorithm, SP automatically regulated the voltage and
current according to the DC source available from PV array and SOC of battery connected.
The SP60/80-150 is able to charge a lower nominal voltage battery from a higher nominal voltage
array. For example, a 36Vdc PV array to charge a 12Vdc battery. This gives the flexibility to use
longer wires without compromising the efficiency of PV system.
The SP60/80-150 was not able to charge a higher voltage battery from a lower
voltage array.
2.4 TBB premium II charging algorithm
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Fitted with multistage charging algorithm (bulk-absorption-float-recycle), the TBB premium II
charging algorithm is designed to charge battery quickly and fully. Microprocessor controlled
charging algorithm with variable absorption charging timer guarantee the optimal charging for
batteries of different discharged state.
Float charging and Recycle charging program guarantee your battery could get proper
maintenance in case of long time connected.
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Battery temperature is a key factor in correct charging, the charging formula must be adjusted
(automatically and in real time) according to the actual battery temperature to ensure that
battery are fully charged but not overcharged or undercharged. All charging voltages
recommended by battery manufacture are in fact ONLY applied at 2
0℃
-25
℃
.
The BTS (Battery Temperature Sensor) supplied with SP measures the temperature of battery
and automatically makes adjustments at real time to properly charge your batteries at
compensation rate of – 4mv/
℃
/cell.
In case of BTS was not present, the SP will use 40
℃
as default setting.
