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Solar Boost 2512i-HV MPPT Solar Charge Controller, 25A, 12V

Solar Boost 2512i-HV MPPT Solar Charge Controller, 25A, 12V
Solar Boost 2512i-HV MPPT Solar Charge Controller, 25A, 12V
Item code Brand name Model number Amps
BLSSB2512I-HV Blue Sky Energy SB2512i-HV 25A

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See our video with Blue Sky Energy/Genasun (one company now) with some great information on their solar charge controllers. Blue Sky product overview starts at 6:28.

Blue Sky Energy
Solar Boost MPPT Charge Controller
12V, 20/25A

Patented Maximum Power Point Tracking technology allows Solar Boost 2512i-HV and Solar Boost 2512iX-HV to increase charge current up to 30% or more compared to conventional charge controllers. The new higher input voltage capability of the HV version product now allows the use of higher voltage lower cost 60 cell PV modules to charge a 12 volt battery. Don’t waste your money by throwing PV power away! Get the power you paid for with a Solar Boost charge controller.

The low cost Solar Boost 2512i-HV provides an advanced fully automatic 3-stage charge control system to ensure the battery is properly and fully charged, resulting in enhanced battery performance with less maintenance. A partial IPN™ network interface is also included to allow use of the Universal Communication Module (UCM), and IPN-Remote and IPN-ProRemote displays. Please Note: This controller is not capable of operating with a remote temperature sensor.

Blue Sky Energy’s advanced Integrated Power Net™, or IPN Network, allows multiple charge controllers to communicate with each other and coordinate their activities to charge the battery as a single coordinate charging machine. The IPN network also allows networked controllers to share an optional battery temperature sensor, UCM and remote display. TComplete IPN network functionality is provided within the charge controller and no additional hardware or software is required.


  • Patented MPPT technology increases charge current up to 30% or more
  • 20/25 Amp 12 Volt rating supports a wide range of applications
  • Optional IPN-ProRemote Display provides charge control & full-featured battery monitoring system
  • Supports up to 270W of 60 Cell modules
  • 3-Stage charge control with filtered PWM output improves battery performance & life while minimizing battery maintenance
  • Clear anodized faceplate, Conformal Coated Electronics & Plastic Case Resist Corrosion
  • Full 5 Year Limited Warranty

How Do Solar Boost Charge Controllers Increase Charge Current?

Solar Boost charge controllers increase charge current by harvesting more PV power. A conventional charge controller simply connects the PV module to the battery when the battery is discharged which can artificially limit how much power a PV module can deliver.

Patented Solar Boost MPPT technology operates the PV module at it's optimum voltage where it can produce the greatest amount of power rather than at battery voltage. The higher power extracted from the module is then provided to the battery as increased charge current.

The actual charge current increase you will see varies primarily with module temperature and battery voltage. In comfortable temperatures, current increase typically varies between 10 to 25%, with 30% or more easily achieved with a discharged battery and cooler temperatures. What you can be sure of is that Solar Boost charge controllers will deliver the highest charge current possible for a given set of operating conditions.

Model Solar Boost 2512i-HV
Output Current Limit 25 amp maximum 36 cell modules / 20 amp maximum 60 cell modules
Nominal Battery Voltage 12 VDC
PV Input Voltage 50VDC absolute maximum (Recommend maximum VOC at STC ≤ 40VDC)*
Power Consumption 0.30 W Typical standby, 1.0 W Typical charge on
Charge Algorithm 3-stage Bulk/Absorption/Float - Charge time in Absorption fixed at 2 hours (Range 0 - 10 hours**)
Absorption / Float Voltage 14.2 VDC fixed value (10.0 - 20.0 VDC**)
Float Voltage 13.2 VDC Fixed Value (10.0 - 20.0 VDC**)
Power Conversion Efficiency 96% typical @ 14 Volt 20 Amp Output with 36 cell modules
Physical Configuration and Dimensions Open frame construction with conformal coated electronics mounted to rear of 5.3” x 5.3” (13.5 cm x 13.5 cm) clear anodized aluminum face plate. Black ABS corrosion proof mounting box included, 2.5" (6.4cm) deep.
Analog Input Accuracy/Range Battery and PV voltmeters, 35.0 / 55.0 VDC ± 0.50% FS
Input/Output ammeters, 30.0 A ± 0.50% FS
Communication Integrated Power Net (IPN) Network interface for IPN displays & UCM only. Complete IPN interface for multi-controller coordination not provided.
Environmental -40 to +40 ºC, 10 – 90% RH non-condensing

* See technical Bulletin #100214, located under the documents tab at the top of this page.

** With IPN-ProRemote which may be used as a setup tool only, or permanently installed.

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