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With boat owners in mind this adaptive 5-step charger can provide either 30A or 50A of charge to each of three battery banks. Or the Phoenix 1+1 model provides 3A to the starter-battery, the rest to the ‘house’ bank. 24V models are available with 16A/25A charge. Bluetooth enabled, you can monitor the charger and set alarms straight from your phone. Adaptive, intelligent, dynamic charge features – see the datasheet below.
https://www.victronenergy.com/upload/documents/Datasheet-Phoenix-Smart-IP43-Charger-EN.pdf
There are a few versions of this, here is some more from Victron
12-Volts output / 30Amp. (3) 3 differnt outputs and 230-Volt input