Patented Maximum Power Point Tracking (MPPT) technology allows Solar Boost 3048L to increase charge current up to 30% or more compared to conventional charge controllers. Don't waste money by throwing PV power away. Get the power you paid for with a Solar Boost charge controller.

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The Solar Boost 3048L provides a precision Multi-stage Pulse Width Modulation (PWM) charge control system to ensure the battery is properly and fully charged, resulting in enhanced battery performance with less battery maintenance. An equalization function is also included to periodically condition liquid electrolyte lead-acid batteries.

A built-in LCD digital display monitors solar charge performance. The display shows battery voltage, solar panel current and output charge current. You can actually see current boost working by noting the difference between solar panel current and output charge current. A charge status LED indicates the present charge mode, and shows when the battery has become fully charged.

Solar Boost controllers increase charge current by operating the PV module in a manner that allows the module to produce all the power it is capable of under present operating conditions. A conventional charge controller simply connects the module to the battery when the battery is discharged. When a 75W module in this example is connected directly to a battery charging at 12 volts its power production is artificially limited to about 53 watts. This wastes 22 watts or nearly 30% of the available power.

Patented MPPT technology used in Solar Boost controllers operates in a very different fashion. The Solar Boost controller continually calculates the module's maximum power voltage, in this case 17 volts. It then operates the module at its maximum power voltage to extract maximum power available. The higher power extracted from the module is then provided to the battery in the form of increased charge current. In conditions where extra PV power is not available (such as in high ambient temperature areas), Solar Boost controllers will operate as a conventional controller with very low voltage drop.

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% achieved with a discharged battery and cooler temperatures.