Blue Sky Solar Boost 2000 - Manual (Page 7)

Installation and Operation Manual
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which is now being delivered at 12 volts would produce a charge current of 6.25 amps. A charge current increase of 1.8
amps or 40% is achieved by converting the 22 watts that would have been wasted into useable charge current. Note
that this example assumes 100% efficiency to illustrate the principal of operation. In actual operation, boost will be
somewhat less as some available power is lost in wiring, connections, fuse and in Solar Boost 2000.
OPTIONAL TEMPERATURE COMPENSATION
The ideal charge voltage required by lead-acid batteries changes with battery temperature. Temperature
compensation of charge voltage leads to increased battery life and decreased battery maintenance. Fully automatic
temperature compensation of charge voltage can be provided through use of the optional SensorLug battery
temperature sensor, RVPP part number 930-0022-20. If your system includes this option, the charge voltage setpoint
will continuously adjust to the proper value based on measured battery temperature. Both liquid electrolyte and gel
electrolyte 12 volt lead-acid batteries require the same temperature compensation characteristic of is –30.0
millivolts/
°C or –16.7 millivolts/°F. The graph of Figure 2 shows charge voltage setpoint vs. battery temperature for
the factory charge voltage setting of 14.0 volts @ 80 °F. The slope of the voltage vs. temperature curve remains
constant for different 80 °F voltage settings.
CHARGE VOLTAGE SETPOINT -VS.- BATTERY TEMPERATURE
Figure 2
OPTIONAL BATTERY MANAGER 6210 INTERFACE
Solar Boost 2000 may be fitted with an optional interface which allows it to operate as a fully integrated
power unit slave to an RV Power Products Battery Manager model 6210. If your Solar Boost 2000 includes this
interface, there will be two six pin connectors in the lower right hand corner of the circuit board as shown in Figure 3.
This interface can be added at any time. Contact RV Power Products for further information.
When combined with a 6210 control panel or complete 6210 system, Solar Boost 2000 no longer controls
the charging process but becomes a power unit slave to the advanced 6210 three stage charge controller. The 6210
control panel remotely measures battery terminal voltage, net battery current and battery temperature, and controls
a sophisticated three stage charge process which is precisely matched to battery electrolyte type and size in amp-
hours. This charge regimen leads to the longest possible battery life while minimizing battery maintenance and
water loss. Note that when used with a 6210 controller, optional temperature compensation is not required since the
6210 performs this function.