Our biggest solar panel just got bigger. The new SP85 solar panel has an 85 W typical peak power; its predecessor, the SP70, had a 70 W typical peak power. This new solar panel recharges the large-capacity battery used in systems with large power requirements, such as eddy-covariance systems. An external regulator (either the CH200 or 18529) connects the SP85 to the battery. Two SP85 solar panels can be attached to one 18529 regulator to provide 170 W of power.