11A to 20A Mains Chargers

11A to 20A Mains Chargers for 12V, 24V, 36V and 48V Battery Systems

This collection is built for buyers who need a capable 240V battery charger for medium-capacity battery banks, regular cycling applications, and dependable workshop or onboard charging. Across caravan, RV, marine, 4WD, off-grid, commercial and industrial setups, 11A to 20A mains chargers are a practical choice when you want a balance of charge speed, battery care and installation flexibility.

Our range includes smart battery chargers, waterproof battery chargers, portable battery chargers and multi-bank battery chargers suited to lithium, AGM and other common battery chemistries where charger specifications allow. You will also find highly regarded options with Bluetooth monitoring, programmable charge profiles and AU/NZ compatible input for straightforward integration into Australian power systems.

Popular use cases for an 11A to 20A battery charger include charging house batteries in caravans, maintaining marine battery banks at the dock, topping up 4WD auxiliary batteries between trips, and supporting workshop, shed or fleet charging requirements. If you are searching for a 12V 15A battery charger, 12V 20A battery charger, 24V 12A charger, 24V 16A charger or a lithium compatible battery charger, this collection targets that exact buying intent.

• 12V and 24V smart chargers for caravan, RV, boat and 4WD applications
• Selected waterproof and portable chargers for harsher environments or mobile use
• Multi-bank chargers for charging separate battery banks from one AC supply
• Bluetooth-enabled models for setup, monitoring and charge mode changes
• Industrial charger options extending into 36V and 48V systems

How to Choose the Right 11A to 20A Charger

Start with system voltage first, then battery chemistry, then charging style. A 12V charger must match a 12V battery system, while 24V, 36V and 48V systems require matching charger output voltage. For lithium batteries, choose a lithium compatible battery charger with the correct charging profile. For AGM banks, select a charger with suitable absorption and float behaviour for long-term battery health.

Current rating matters too. A 15A battery charger or 20A battery charger can suit medium-sized battery banks where faster recharge times are important without moving into oversized charger territory. Multi-bank models are ideal for boats, larger caravans and service vehicles that need separate starter and house battery charging from one unit. For exposed install locations, a water resistant or waterproof charger can be the better technical fit.

If you are comparing charger types beyond this range, browse our Mains Chargers range, narrower 12V Battery Chargers, or charger-specific options in Lithium Compatible Battery Charger. If you need help matching charger size to battery bank capacity and wiring, our article on Victron Mains Chargers Compared can help shortlist suitable models before purchase.

Why Buyers Choose This Range

This collection focuses on proven charger formats from brands we sell, including widely specified smart charger and multi-bank charger options for touring, marine and industrial environments. Whether you need a Blue Smart IP22 charger for indoor installs, an IP65 or IP67 charger for more exposed conditions, or a heavier-duty charger for commercial battery systems, the range is selected for real-world compatibility and serviceability.

As an Australian family business with a decade of experience, we back our range with before and after support, practical product knowledge and fast dispatch. If you want a charger that fits your battery chemistry, charging routine and installation environment the first time, shop this 11A to 20A mains charger collection now and get dependable charging performance with informed support when it counts.

Common Questions

Is an 11A to 20A charger suitable for lithium batteries?
Many models in this collection are suitable for lithium batteries, but you should always confirm the charger has a lithium charging profile and the correct voltage for your battery bank.

What is the difference between IP22, IP65 and IP67 chargers?
These ratings indicate enclosure protection. Higher IP ratings are generally better suited to dust, moisture and harsher installation areas, subject to the product's intended use.

Do I need a 15A or 20A battery charger?
A 20A charger will usually recharge a suitable battery bank faster than a 15A model, but the right choice depends on battery capacity, chemistry and the manufacturer's recommended charge current.

What is a multi-bank battery charger?
A multi-bank charger can charge separate battery banks independently from one AC input, which is useful in marine systems, caravans and service vehicles with more than one battery bank.