ePOWER 12V 20A Multi-Bank Battery Charger EN31220
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ePOWER 12V 20A Multi-Bank Battery Charger EN31220

ePOWER 12V 20A Multi-Bank Battery Charger EN31220

EN31220 ePOWER Battery Charger
List price: $500.00  
$375.00
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ePOWER 12V 20A Mulit-Bank Battery Charger for Gel, AGM, Flooded, Lithium Batteries - ePOWER EN31220

EN31220 12v 20A Battery Charger Features:

  • Multistage Charging: Fully automatic multistage 20A 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 ePOWER 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 3 meter cable.
  • 2 Year Warranty from an Australian company renowned for customer support.

Multistage Charging Process

The Enerdrive ePOWER 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 ePOWER multistage smart 20A battery charger deliver 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 ePOWER Battery Charger will switch the charger from float to bulk to agitate the batteries electrolyte helping to provide an extended service life.

It’s 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 ePOWER 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 below shows the ePOWER charger algorithm perfectly supporting Lithium battery requirements. Enerdrive Battery Charger Lithium FeaturesePOWER Battery Charger Display

The Display Panel

The ePOWER 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.

 

 

ePOWER Battery Charger Temperature Sensor

Battery Temperature Sensor

Included standard with all ePOWER Battery Chargers.

CHARGER OUTPUT
Output Current (Maximum) 20A
OUTPUT VOLTAGE RANGE
Charge 14.2 – 15.5 V
Float 13.4 – 13.8 V
– Equalize 16.0 V
Charging Control

Four stages (Bulk/Absorption/Float/Maintenance)Two stages (Bulk/Absorption)

Constant Power Supply (Program setting)

Priority Battery Bank Charging

DC Output Bank Three (1 fully independent, 2 common with diode isolation)
Selectable Battery Type Gel, AGM, Flooded, Lithium, Program
Standby Current < 2 mA
CHARGER INPUT
AC Input Voltage (Nominal) 90 to 265 VAC
AC Input Operating Range 207-265 Vac (2.0 A Max)90-125 Vac (3.8 A Max)
AC Input Frequency Range 47 – 63 Hz
Power Consumption 350W (Full Load)
Power Factor Correction Yes
Charger Efficiency > 82%
PROTECTION AND FEATURES
Reverse Polarity Yes, (with user replaceable fuse/s)
Over Charge Yes, unit shutdown
Over Temperature Yes, unit de-rated and shutdown
Output Short Circuit Yes, (with user replaceable fuse/s)
Cooling Forced air ventilation (thermo controlled fan)
Temperature Setting Hot, Normal, Cold (no sensor connected)
Battery Temp Sensor Port RJ12 (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 Connection IEC with Supplied 1.2M Power Lead
DC Output Connection Heavy Duty Terminal (3 banks) – Pan Heads 6mm Thread
DC Output Ground Single Heavy Duty Common Ground Stud
ENVIRONMENTAL AND OPERATING TEMPERATURE
Storage Range -40° to 70° C
Operating Range -20° to 60° C
Humidity 5-95%, relative humidity non-condensing
Ingress Protection IP32 (Basic drip proof in vertical orientation)
Base Unit Weight and Dimensions
Weight: 2.4 kg
Dimension: L x W x H 295mm x 206mm x 86mm
Optional Accessories Remote Digital Display / Enerdrive Part Number EN3REM
Regulatory Compliance Complies with AS/NZS 60335.2.29 Including Australian deviations.
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