This 12a fully automatic battery charger is suitable for all typres of 12v lead acid and gel batteries between 20 225ah fast 12 0a rms 8 0a dc and trickle 3 75a rms 2 5a dc charge selection led display showing charge status and reverse polarity connection warning fully protected against sparks short circuit and over heating includes temperature and voltage compensation automatically switches to maintenance mode when battery is fully charged sakura offers a comprehensive portfolio