The Steca PR-3030 is designed to handle up to 30A of solar array power in 12V or 24V systems. Features PWM multi-stage charging, load control, and LCD status display. The Steca PR charge controllers have been proven their effectiveness for over 10 years, employing fifth generation charge controller technology (up to 720 Wp). In this manual, safety instructions for personal safety are identified with this symbol. Instructions relating to the functional safety of the system and the controller are in bold type. 1.2 General safety instructions Be sure to observe the following instructions when installing the controller and handling the batteries: They are connected to a Steca PR3030 controller. I haven't upgraded my battery bank as yet.. It is still a single 12V 105ah. The problem is my controller shows an error code E08 which means, as stated in their manual, battery overvoltage (>15.5V). Shouldn't the controller see to it that the voltage is not beyond the maximum allowed. Solar controller The Steca PR 10-30 series of charge controllers is the highlight in the range. Use of the latest charging technologies combined with state of charge determination enable optimal battery maintenance and module power monitoring. A large display informs the user about all operating modes with the aid of symbols. The state of charge is represented visually in the form of a level meter. Data such PR3030 30A 12/24V Solar Charge Controller with LCD The latest charging technologies, combined with a Steca-AtonIC state of charge determination which has been significantly improved once again, result in optimal battery maintenance and control of the module output of up to 900 Wp which can be connected to it. Steca PR 10-30 1010, 1515, 2020, 3030 The Steca PR 10-30 series of charge controllers is the highlight in the range. Use of the latest charging technologies combined with state of charge determination enable optimal battery maintenance and module power monitoring. A large display informs the user about all operating modes with the aid of symbols. The 30 Amp Steca PR 3030 is a high quality solar charge controller with a 'customer designed' LCD display that shows the state of charge (SOC) in percentage and battery gauge symbol. The range of Steca PR solar charge controllers were launched in the year 2004 as the fifth generation of charge controller technology (up to 900 Wp). Manually controlled load switch Low voltage load disconnect Optimised float, boost & equalisation charging Terminals large enough for 16-25mm2 wire Dusk to dawn lighting control feature Selectable charging mode for sealed or wet-cell batteries LCD Screens Display: Battery voltage Battery state of charge Charging current in Load current out Steca PR PR 1010, PR 1515, PR 2020, PR 3030. The Steca PR 10-30 series of charge controllers is the highlight in the range. The latest charging technologies, combined with a Steca-AtonIC state of charge determination which has been significantly improved once again, result in optimal battery maintenance and control of the module output of up to 900 Wp which can be connected to it.