CirKits.com SPC3 Features and Specifications

• Features
  • Reliable solid-state circuitry, no power hungry relays to burn out.
  • Temperature compensated, adjusts charging voltage with temperature.
  • Charging method: Full-on below float point, PWM at float point.
  • Radio quiet, can be used with sensitive radio receivers.
  • The efficient design works with small and medium sized battery/solar panel combinations.
  • Built-in fuse for protection from excessive load and solar charging currents.
  • The load and battery circuits have a common negative ground.
  • The application of reverse battery polarity blows the fuse, the rest of the circuitry is protected.
  • Will work with most rechargeable battery types: wet or gell cell lead acid, NiCd, and NiMH.
  • Simple 6 screw connector will accept up to 14 gauge wires for attaching a battery, load and a PV panel.

• Controls and Indicators
  • Load On-Off Switch: spring loaded momentary on, momentary off, can be remote from board.
  • High intensity Red/Green LED for charge controller Charge/Float indication.
  • Twin high intensity White LEDs for Load-Power indication and local area lighting.
  • High intensity Amber LED for Low-Voltage indication, lights at 0.6V above the LVD setpoint.
  • Charge controller float voltage adjustment pot.
  • Low voltage disconnect setpoint pot.
  • Equalize terminals provided, bridge during periodic maintenance overcharging.

• Specifications
  • Solar Charging Current: up to 9 Amps continuous.
  • Nominal Battery Voltage: 12V.
  • Recommended Battery Capacity: 0.5 to 200 Amp Hours.
  • Photovoltaic Panel Voltage Ratings: 12V Nominal (17-20V Open Circuit Voltage, 36-40 cell typical).
  • Photovoltaic Panel Power Ratings: 1W to 110W (90ma - 9A Short Circuit Current).
  • Load Current: up to 10 Amps continuous, more with an external solid-state relay.
  • Load Voltage Ratings: 12V nominal, 11V-13.8V typical range.
  • Works with resistive, capacitive and inductive loads.
  • Charge Controller Float Voltage Range: 13.0V-16.1V (range can be altered).
  • Low Voltage Disconnect Range: 10.0V-13.0V.
  • Voltage Drop During Charging: .5V @ 3A, 1V @ 9A.
  • Night Time Battery Current Drain, power off: 150 microamps.
  • Night Time Battery Current Drain, power on, white LEDs on, no load: 25 milliamps.
  • Equalize voltage rise: 1.8V.
  • Charge Controller Temperature Compensation: -7.5mV/Degree C.
  • Fuse Rating: 10 Amp standard ATO automotive fuse.
  • Board Dimensions: 4.00" wide by 3.00" deep by 0.875" tall.
  • Board Mounts: 4X 4-40 screws on 1/4" spacers.
  • Assembled Weight: 58 grams (approximately 2oz).