Likewise, the MPPT varies the ratio between the voltage and current delivered to the battery, in order to deliver maximum power. If there is excess voltage available from the PV, then it converts that to additional current to the battery. Furthermore, it is like an automatic transmission.
On the Supreme Court of the United States, Associate Justices Potter Stewart and Anthony Kennedy have been described as swing votes between the two factions of the court. In the United Kingdom, the  Essex man ,  Worcester woman  and  Holby City woman  are examples of personifications of swing voters.
President Trump announced Neil Gorsuch as his pick. On a subject as important as a Supreme Court justice, bipartisan support is essential, and that requires 60 votes. But this administration seems to have less respect for the rule of law and our democratic process than any administration in recent memory.