Studer Variostring VS 70 is the smart charge controller for maximum battery life.

The Studer Variostring vs 70 MPPT solar charge controller is designed to work with a PV string up to 600 Vdc, reducing cable sizes and installation costs while delivering outstanding performance. It operates together with the xtender or next series of inverter-chargers to build complete solar systems. It can also work alone in 48V systems for example, in a telecom system. The vario chargers have been used in standard solar systems as well in special applications (hydro, DC/DC converters, DC minigrid).

100% offgrid/ongrid

• World champion for efficiency in isolated converter with >98 % and high MPPT tracking efficiency >99.8%
• Low standby consumption (<1W) is perfect for an offgrid system.
• Directly compatible with our xtender series of inverter-chargers and our next series with the xcom 485i for offgrid/ongrid installations.

Practical

• Reduces expensive wiring for parallel modules with higher voltage and smaller cables.
• Adaptable with a fully programmable charging curve and PV algorithm, etc. With access to more than 200 settings.
• Scalable with multi-unit options up to 15 units with the xtender series of inverter-chargers (63kW) and 5 units with the next series (21kW).

Designed for a wide range of uses

• Offgrid and backup application
• Solar autarky (self-sufficiency) with our next series of inverter-chargers
• Minigrids application
• On board power
• Mobile application
• Telecom application (48V DC systems or 230V AC with inverters)
• Hydro and Wind DC power

More information about Studer Variostring VS 70:

• Datasheet