automatic charger造句

The batteries are required to have a capacity to power the equipment for 1 hour on ships with an emergency generator or built prior to February 1995, and 6 hours on ships not fitted with an emergency generator or built after February 1995 in order to comply with SOLAS . The batteries must be charged by an automatic charger, which is also required to be powered from the main and emergency generators.
It's difficult to find automatic charger in a sentence. 用automatic charger造句挺难的