bq25968 Switched Cap Fast Charger Texas Instruments bq25968 Switched Cap Fast Charger is a 97% efficient, 6A battery charging solution using a switched cap architecture. This architecture and the integrated FETs are optimized to enable a 50% duty cycle, allowing the cable current to be half the current delivered to the battery. This feature reduces the losses over the charging cable as well as limiting the temperature rise in the application.