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12V 20A AC Battery Charger

The Enerdrive | Dometic 20A AC Battery Charger is a fully automatic, “set and forget” charger. It is designed to quickly and accurately recharge your batteries using algorithms that help maximise service life. Multistage smart charging technology enables the charger to be connected to your battery banks permanently.

$551.00

SKU: EN31220 Category:

Features

20A AC Battery Charger Features:

  • Multistage Charging: Fully automatic multistage battery charger with the ability to charge 3 separate battery banks.
  • Separate Battery Banks: Isolated charging design where battery bank one is separate from battery bank two and three.
  • Programmable: Battery bank 1 can be programmed with a different charge algorithm over banks 2 and 3.
  • Current Control: User adjustable current output (e.g. Dial the 60amp unit back to run off a 1kVA generator).
  • Smart Charging: The 20A battery charger will regulate its output based on the loads connected to your battery banks.
  • Wide AC Input Range: Operates on both 110V / 60Hz and 240V / 50Hz.
  • LED Display: Easy to use “set and select” menu along with scrolling charger status.
  • Silent Mode: Disables the cooling fan for total silent operation at night or whenever required. Activation reduces charge output by half and locks out fan for 12 hours.
  • Temperature Sensor: Battery temperature sensor included with 7.5 meter cable.
  • 5 Year Warranty from an Australian company renowned for customer support.

Multistage Charging Process

The Enerdrive | Dometic 20A Battery Charger is a fully automatic, “set and forget” charger. It is designed to quickly and accurately recharge your batteries using algorithms that help maximise service life. Multistage smart charging technology enables the charger to be connected to your battery banks permanently.

As dictated by battery manufacturer’s recommendations, batteries require a multistage charge sequence for perfect, fast and accurate charging. Our multistage smart 20A battery charger delivers four primary charge stages:-

  • Stage 1 – Bulk or Boost Charge; The battery is charged at full rated output current of the charger until the battery reaches its final charging voltage, known as its absorption voltage. In this step, around 80% of the battery capacity is recovered as fast as possible.
  • Stage 2 – Absorption Charge; With the charger voltage held steady the remaining 20% is replaced allowing the current to drop as the battery approaches its full charge.
  • Stage 3 – Float; Finally, in the float stage the charger voltage is lowered and held at a constant and safe predetermined level. This prevents the battery from being overcharged while supporting any additional loads connected to the battery, such as DC lighting and refrigerators. This stage allows for the charger to be used as a DC power supply.
  • Stage 4 – Maintenance; This stage is a regular timed “return to bulk” stage. After 7 days of constant operation in “float” the Enerdrive | Dometic Battery Charger will switch the charger from float to bulk to agitate the batteries electrolyte helping to provide an extended service life.

1 PRIORITY – Charge Where You Need it Most

The 20A Battery Charger delivers a priority charge to Bank 1, or your main house battery bank which allows the charger to get this bank recharged the quickest, then transition the cycle to the lesser bank 2 & 3 batteries.

The priority function also allows you to have a battery chemistry different to the other two, such as an AGM battery for house and lead calcium for your start banks.

In the event that all 3 banks are in need of a charge, an over-ride function helps recover all 3 banks quickly and evenly before switching back to prioritise on Bank 1.

All About Lithium

The recent advances in high capacity Lithium battery technology have seen the need to develop a battery charger suited to their needs. With most traditional ‘smart’ chargers their suitability to Lithium batteries is limited. Lithium batteries require a constant current / constant voltage charge algorithm and are unique in that almost every amp-hour of charge delivered by the charger is accepted as one amp hour into the battery, hence the need to deliver a constant current as long as possible.

The Enerdrive | Dometic charger can be programmed for Lithium batteries. This setting delivers the full rated output of the charger constantly with the charger switching to power supply mode once the voltage peak is met (indicating a full battery bank). The graph shows the charger algorithm perfectly supporting Lithium battery requirements.

The Display Panel

The 20A Battery Charger display gives you all the information you need for the operation of your charger. At a glance, key information such as charger amps, battery voltage and charge state continually alternate on the screen.When in float / power supply mode, the load amps are displayed so you can see exactly what the charger is doing. The display also allows you to program all settings of the charger, as well as activate the silent mode.

Silence when you need it – By pressing the “SEL” button for 5 seconds, the ePOWER Charger enters the ‘Silent’ mode that prohibits the fan from working. This ensures totally silent and safe operation at night, ideal if the charger is located close to your sleeping quarters. Silent mode limits current output to no more than 50%, and is programmed to remain on for 12 hours before automatically returning to a normal ‘fan-on & full output’ setting.

Battery Temperature Sensor

Included standard with all Battery Chargers.

Specifications

ePOWER 12V 20A Battery ChargerePOWER 12V 40A Battery ChargerePOWER 12V 60A Battery ChargerePOWER 12V 100A Battery ChargerePOWER 24V 30A Battery Charger
SKUEN31220EN31240EN31260EN312100EN32430
CHARGER OUTPUT
Output Current (Maximum)20A40A60A100A30A
OUTPUT VOLTAGE RANGE
Charge14.2 – 15.5 V28.4 – 31.0V
Float13.4 – 13.8 V26.8 – 27.6V
Equalize15.5 V32.0V
Charging ControlFour stages (Bulk/Absorption/Float/Maintenance)
Two stages (Bulk/Absorption)
Constant Power Supply (Program setting)
Priority Battery Bank Charging
DC Output BankThree (1 fully independent, 2 common with diode isolation)
Selectable Battery TypeGel, AGM, Flooded, Lithium, Program (Flooded Default)
Standby Current< 2 mA< 5 mA< 2 mA
CHARGER INPUT
AC Input Voltage (Nominal)100,120,220,230,240 VAC
AC Input Operating Range207-265 VAC (2.0 A Max)
90-125 VAC (3.8 A Max)
207-265 VAC (3.8 A Max)
90-125 VAC (7.7 A Max)
207-265 VAC (5.9 A Max)
90-125 VAC (11.3 A Max)
207-265 VAC (7.6 A Max)
90-125 VAC (15.9 A Max)
207-265 VAC (5.9 A Max)
90-125 VAC (11.3 A Max)
AC Input Frequency Range47 – 63 Hz
Power Consumption350W (Full Load)700W (Full Load)1050W (Full Load)1750W (Full Load)1050W (Full Load)
Power Factor CorrectionYes
Charger Efficiency> 82%
PROTECTION AND FEATURES
Reverse PolarityYes, (with user replaceable fuse/s)
Over ChargeYes, unit shutdown
Over TemperatureYes, unit de-rated and shutdown
Output Short CircuitYes, (with user replaceable fuse/s)Protected, charger shutdownYes, (with user replaceable fuse/s)
CoolingForced air ventilation (thermo controlled fan)
Temperature SettingHot, Normal, Cold (no sensor connected)
Battery Temp Sensor PortRJ12 (standard battery temp. sensor supplied)
DISPLAY
LCD Display (with back light)Charging status, Battery Voltage, Output Current & Fault Codes.
AC INPUT AND DC OUTPUT CONNECTION
AC Input ConnectionIEC with Supplied 1.2M Power Lead
DC Output ConnectionHeavy Duty Terminal (3 banks) – Pan Heads 6mm ThreadHeavy Duty Terminal (3 banks) – Hex Nuts 8mm ThreadHeavy Duty Terminal (3 banks) – Pan Heads 6mm Thread
DC Output GroundSingle Heavy Duty Common Ground Stud
ENVIRONMENTAL AND OPERATING TEMPERATURE
Storage Range-40° to 70° C
Operating Range-20° to 60° C
Humidity5-95%, relative humidity non-condensing
Ingress ProtectionIP32 (Basic drip proof in vertical orientation)
Base Unit Weight and Dimensions
Weight: (kg)2.42.646.44
Dimension: (mm) L x W x H295 x 206 x 86295 x 206 x 86356 x 206 x 99425 x236 x 102.7356 x 206 x 99
Optional AccessoriesRemote Digital Display / Enerdrive Part Number EN3REM
Regulatory ComplianceComplies with AS/NZS 60335.2.29 Including Australian deviations.

Note: Specifications subject to change without notice.

Accessories

Enerdrive Part #Description
EN3REMOptional Remote Control for ePOWER AC chargers (includes 7.5m cable)
EN3TEMPReplacement Temperature Sensor to Suit ePOWER Chargers

Note: Specifications subject to change without notice.

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