The Battery Tender® Junior 800 is much more than a trickle charger. It has a brain. It's lightweight, compact, and very easy to use, especially in small spaces. Battery Tender® smart chargers will automatically switch from full charge to float charge mode. Suitable for AGM/Lead acid/GEL/ Flooded or Lithium (LifePO4) batteries. Equipped with reverse hook-up protection and spark proof alligator clips and fused ring terminals. Battery Tender® ISM™ micro controller constantly updates charge sequence for smooth transitions between charging steps. This 800mA Selectable will keep your battery fully charged so that it is ready to go when you are!