The VarioString solar charge controller supports PV string voltages up to 900 V or 2 × 600 V and features two independent, isolated MPPT inputs, allowing efficient use of differently oriented PV arrays. With over 98 % efficiency, galvanic isolation for flexible grounding, up to 15 units operable in parallel, and full control via RCC-02/-03 or Xcom accessories, it provides maximum efficiency with reduced installation effort.

The VarioTrack solar charge controller is fully programmable, achieves over 99 % efficiency through precise MPPT tracking, and optimally charges batteries, extending their lifespan. With up to 15 units connectable in parallel, extensive configurability via RCC-02/-03, low standby power consumption, and full protection against misconnection and reverse polarity, it is ideal for flexible, industrial, or off-grid solar systems.

The VarioTrack solar charge controller is fully programmable and, thanks to its high-precision MPPT tracking and 4-stage charging algorithm, achieves over 99 % efficiency, optimally charging batteries and extending their lifespan. With up to 15 units connectable in parallel, extensive configurability via RCC-02/-03, and built-in protection against misconnection and reverse polarity, it is ideal for flexible, industrial, or off-grid solar systems.

The RCC-02/-03 remote control and programming unit allows monitoring and custom adjustment of all Xtender, VarioTrack, and VarioString parameters. With a graphical display, SD card reader for parameters, presets, and updates, plus wall-mount capability and a 2 m cable, it provides convenient system control and straightforward data management.

The RCC-02/-03 remote control and programming unit allows monitoring and adjustment of all Xtender, VarioTrack, and VarioString parameters to meet individual system requirements. Featuring a graphical display, SD card reader for parameters, presets, and updates, as well as wall-mount capability and a 2 m connection cable, it provides convenient system control and data management.

The VarioString VS-70 is a galvanically isolated MPPT solar charge controller for 48V batteries, capable of connecting PV strings from 200–600V with up to 70A charging current and achieving over 98 % efficiency thanks to its ultra-fast MPPT algorithm. Its configurable charging profile, tool-free SUNCLIXT M connectors, and comprehensive communication and control options make it more efficient and flexible than conventional isolated solar charge controllers.