OK people, this is the last charger you will need to buy.
It works on lead acid, AGM, Lithium, Gel Cell..... 6 or 12 volt. Automatically switches to float/maintenance voltage after fully charging the battery. Complete 4-step charging program (initialization, bulk charge, absorption mode, float mode). If the battery voltage drops too far under load, full charger output power resumes.
The Battery Tender 4 amp selectable is an automatic and easy to use battery charger that will keep your battery fully charged and ready to go when you are.
5 year warranty through the manufacturer, spark proof reverse polarity protected. Solid state 2 color LED indicates stage of charger. Meets California & Oregon appliance energy efficiency standards for battery charging systems...
Comes with an alligator clip type pigtail as well as a ring connector pigtail to permanently attach to your battery.