Reliable smart charging for 12V touring, marine and caravan battery banks. The Enerdrive | Dometic ePOWER 20A AC Battery Charger (EN31220) is a fully automatic multi-stage charger designed to recharge and maintain up to three 12V battery banks from AC power. It is suited to Gel, AGM, Flooded and Lithium battery setups, with priority charging for Bank 1 and a clear LCD display for charge status, battery voltage, output current and fault codes.
Why it works so well in Aussie touring rigs
• Three-bank charging lets you manage a main house bank plus two secondary banks from one charger.
• Priority charging for Bank 1 gets your main house battery bank recovered first before transitioning to the other banks.
• Lithium programmable for LiFePO₄ battery systems, along with Gel, AGM, Flooded and custom/program profiles.
• Silent mode disables the cooling fan for quiet overnight operation, ideal for caravans, campers and boats.
• LCD display shows charger status, battery voltage, output current and fault codes without needing extra gear.
• Built-in protection includes reverse polarity, over-charge, over-temperature and output short-circuit protection.
Why buy from us
- Real 12V system advice from a touring and installation-focused team
- Fast QLD dispatch from our Baringa warehouse where stock is available
- Suitable support for caravan, 4WD, canopy, boat and touring power setups
- Local backup before and after the sale
Key features
• Model: EN31220
• 12V AC battery charger with 20A maximum output current
• Fully automatic multi-stage charging: Bulk, Absorption, Float and Maintenance
• Charges up to 3 separate battery banks
• Bank 1 can be programmed with a different charge algorithm to banks 2 and 3
• Selectable battery types: Gel, AGM, Flooded, Lithium and Program
• Wide AC input: 100, 120, 220, 230 and 240 VAC nominal
• Thermo-controlled forced-air cooling fan
• Silent mode limits output and disables the fan for quiet operation
• LCD display with backlight for charge status, voltage, current and fault codes
• Battery temperature sensor included
• IP32 basic drip-proof rating when installed vertically
• Complies with AS/NZS 60335.2.29 including Australian deviations
• 5-year Enerdrive warranty
What’s in the box
• Enerdrive | Dometic ePOWER 12V 20A AC Battery Charger - EN31220
• Battery temperature sensor
• IEC AC input power lead
Tech specs quick
• SKU: EN31220
• Output current: 20A maximum
• Charge voltage range: 14.2–15.5V
• Float voltage range: 13.4–13.8V
• Equalise voltage: 15.5V
• Charging control: Bulk / Absorption / Float / Maintenance, two-stage mode, constant power supply mode and priority bank charging
• DC output banks: 3 - one fully independent, two common with diode isolation
• Standby current: <2mA
• AC input frequency: 47–63Hz
• Power consumption: 350W full load
• Charger efficiency: >82%
• Operating range: -20°C to 60°C
• Unit size: 295 × 206 × 86 mm
• Unit weight: 2.4 kg
