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4.2 Battery Charging Information
The eTracer has a 3 stages battery charging algorithm for rapid, efficient, and safe
battery charging.
Figure 4-2 eTracer charging algorithm
·Bulk Charge
In this stage, the battery voltage has not yet reached boost voltage and 100% of
available solar power is used to recharge the battery.
·Boost Charge
When the battery has recharged to the Boost voltage setpoint, constant-voltage
regulation is used to prevent heating and excessive battery gassing. The Boost stage
remains for some time and then goes to Float Charge. Every time when the controller
is powered on, if it detects neither over discharged nor overvoltage, the charging will
enter into boost charging stage.
·Float Charge
After the Boost voltage stage, Tracer will reduce the battery voltage to float voltage
setpoint. When the battery is fully recharged, there will be no more chemical reactions
and all the charge current transmits into heat and gas at this time. Then the eTracer
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