-electricity (wall power) and slowly charges attached 12V Lead-Acid
-battery. Lead-acid battery in turn provides high current when needed
-as well as power in portable situations or when mains electricity is
-not available.
+electricity (wall power) and slowly charges (use-changing) attached
+12V Lead-Acid battery. Lead-acid battery in turn provides high current
+when needed as well as power in portable situations or when mains
+electricity is not available.