Providing you with fast and reliable charging, the MK 315D Digital On-Board Charge has Automatic Multi-Stage Charging to control voltage throughout the 3 stages. It addition, it features Digital Control to continually monitor temperature/state of charge, as well as Automatic Temperature Compensation to adjust to outside conditions. Made to last, the Minn Kota(R) MK 315D Digital On-Board Charger is waterproof, shock-resistant, corrosion-resistant and vibration resistant. FEATURES: Digital Control continually monitors temperature and state of charge for a faster and more precise charge Automatic Multi-Stage Charging controls voltage throughout the 3 stages of the charging cycle for a safe, precise charge Automatic Temperature Compensation adjust charge based on outside temperature fluctuations for a fast and accurate charge Status Code Display has color-coded readings to display connection status, state of charge and error codes True-Rated Output for faster charge AC Plug Holder keeps charger plug dry, safe and accessible Waterproof, shock-resistant and vibration-resistant construction Saltwater-tested to resist corrosion Short circuit, reverse polarity, arc and ignition protected FCC Compliant UL listed to marine standard 1236 For use with 12-, 24-, 36- and 48-volt systems with 12V/6 cell batteries that are Flood/Wet Cell, Maintenance Free or Starved Electrolyte (AGM) only Manufacturer's 3-Year Replacement Warranty SPECS: Number of Banks: 3 Output Per Bank: 5 amps Total Output: 15 amps Dimensions: 12.5" x 7.5" x 4" Weight: 14 lbs.