Deltran Battery Tender Junior 12 Volt 3-Pack 021-0123(x3) BRAND NEW Genuine Deltran brand Fully automatic 2-stage lead-acid battery charger 3-step fully automatic charging program (Bulk Charge, Float Mode) Charges/maintains sealed maintenance free, AGM, or flooded lead batteries After reaching peak 14.4 VDC, charger automatically switches to 13.2 VDC float voltage Four step chargine program Manufacturer 5 year warranty