MASTERVOLT MARINE/BOAT POWER CHARGER 12/40-3-40 AMPS-44210400

• Technical specificationsCharge characteristic IUoUo, automatic / 3-step+ for gel/AGM/wet/Lithium IonCharge voltage Bulk 14.4 VCharge voltage Absorption 14.25 VAbsorption time 4 hoursCharge voltage Float (wet batteries) 13.25 VCharge voltage Float (gel/AGM batteries) 13.8 VTemperature compensation -7.6 mV/ °FVoltage compensation automaticPower consumption (DC side) < 5 mAFull load consumption (230 V AC) 700 WCurrent Control function noPower factor control > 0.98Temperature range (ambient temp.) -13 to 158 °FCooling vario fanSound level < 52 dBA at 1 mtrProtection degree IP23Protections over temperature, over load, short circuit, high battery, low batteryMasterBus compatible noCSI/DC alarm yes, using a Multipurpose Contact Output (code 77030500)

I needed this for a 3 bank system on my trawler. My old Xantrex died without warning. This is fairly quiet when operating. The display is useful and you can see exactly where it is set at any time without a flashlight or guessing. Easy to install and charged my banks (which were fully depleted) in under 4 hours. Very happy with this purchase.