Blue Sea BatteryLink Automatic Charging Relay - 12V24V DC 120A Features 120 Amp continuous rating 1224V DC auto ranging voltage input Senses charging on two battery banks Side and bottom knockouts for cable connections Clip-on cover insulates terminal connections 78 22 mm stud length to accept multiple cable terminals Integrated LED indicates ACR status 14 .032 male quick connect terminals for ground and optional features Largest battery bank cannot exceed Group 27 California Residents WARNING