... 2.Safe and explosionproof 3.Long using time lead acid battery CHARACTERISTICS: -Safety and explosion-proof,-Wide ... discharge recovery performance, -Maintenance free,adding battery acid is unnecessary, -FM serie valve Maintenance Free Lead-Acid Battery Charge for autos.CAUTION : lead acid battery 1.Avoid short circuit, ... 7.Handle with care to protect the battery terminal, 8.Make regular examination and ...