Enerdrive ePOWER 20A 3-Output Smart Battery Charger

Enerdrive ePOWER 20A 3-Output Smart Battery Charger

The Enerdrive ePOWER 20A 3-Output Smart Battery Charger is a fully automatic multi-stage charger that charges up to three separate battery banks — house, start and an auxiliary battery — simultaneously from a single 240V shore power connection.

At 20A output it's well suited to smaller battery banks, and its smart multi-stage charging profile (bulk, absorption, float and maintenance) keeps your batteries topped up and healthy for the long term, whether you're plugged in overnight or left on charge between trips.

Key Features

• 20A Charging Current — efficient charging for smaller battery banks
• 3 Independent Outputs — simultaneously charges house, start and auxiliary batteries, each independently managed
• Multi-Stage Smart Charging — bulk, absorption, float and maintenance stages optimised for battery type and longevity
• Supports Multiple Battery Chemistries — Gel, AGM, flooded lead-acid and lithium (LiFePO4), with programmable profiles per bank
• 240V AC Shore Power Input — plugs into a standard NZ shore power supply
• Silent Mode — reduces output for quiet overnight charging
• Comprehensive Protection — over-voltage, over-current, short circuit and reverse polarity protection

Brand Quality — Enerdrive is a leading Australian-designed power specialist, now part of the Dometic Power Solutions group, with products engineered and tested for the demands of Australian and New Zealand touring conditions. The ePOWER 20A charger is backed by Enerdrive's 5-year manufacturer's warranty, giving you confidence your batteries are being charged safely and efficiently on every trip.

Brand: Enerdrive ePOWER

Model: EN31220

Charging Current: 20A

Outputs: 3 independent battery banks

Charging Stages: Multi-stage — Bulk, Absorption, Float, Maintenance (plus 2-stage and constant power modes)

Battery Types: Gel, AGM, flooded lead-acid, lithium (LiFePO4) — programmable per bank

Charge Voltage: 14.2–15.5V

Float Voltage: 13.4–13.8V

Input: 240V AC shore power

Protection: Over-voltage, over-current, short circuit, reverse polarity

Dimensions (L x W x H): 295 x 206 x 86mm

Weight: 2.4kg

Warranty: 5 years (manufacturer)

Does the price include GST?
Yes, all prices shown on the site include GST.

Do you ship NZ-wide?
Yes, we ship throughout New Zealand.

How do I know this will suit my setup?
Check the specifications listed above — particularly the charging current against your total battery bank capacity — and confirm your battery chemistry is supported. If you're unsure, contact us and we're happy to help you confirm it will suit your setup.

What's the warranty?
This charger is backed by Enerdrive's 5-year manufacturer's warranty.

What size charger do I need for my battery bank?
A general rule is a 10–20% charge rate. For a 100Ah battery bank, a 10–20A charger is appropriate. For 200Ah, a 20–40A charger. For large lithium banks of 300Ah+, a 40–60A charger significantly reduces charge time. Faster charging isn't harmful provided you don't exceed the battery manufacturer's maximum charge rate.

What are the 3 outputs for?
The three outputs let you simultaneously charge your main house battery bank, your vehicle start battery and a third auxiliary battery (such as a fridge battery). Each output is independently managed.

Can it charge lithium (LiFePO4) batteries?
Yes, this charger has a programmable lithium profile and can be set up for LiFePO4 batteries alongside gel, AGM or flooded lead-acid banks on the other outputs.

Does it need a remote panel to operate?
No remote panel is required — the charger's charging status and bank selection are managed automatically once it's wired in, with an included temperature sensor to fine-tune charging to battery conditions.