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Dual Battery Chargers

Our DC to DC chargers keep your battery charged whilst driving & will fully charge auxiliary batteries to a proven 100%. Buy online now.

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  1. 20A Under Bonnet DC Battery Charger BCDC1220
    NZ$677.44
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    Keep your battery charged while driving with the REDARC BCDC1220, a 12V 20A in-vehicle, multi-stage, DC to DC battery charger.
  2. 20A Ignition Control Under Bonnet DC Battery Charger BCDC1220-IGN
    NZ$675.23
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    The REDARC BCDC1220-IGN is a multi-stage DC to DC dual battery charger which features technology capable of fully charging a lead acid auxiliary battery.
  3. BCDC Classic Under Bonnet 25A DC Battery Charger BCDC1225D
    NZ$735.98
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    The REDARC BCDC1225D In-vehicle Dual Battery Charger is a 12 volt, 25A in-vehicle DC-DC battery charger designed to charge your secondary battery banks to 100% state of charge while on the move.*
  4. BCDC Classic Under Bonnet 40A DC Battery Charger BCDC1240D
    NZ$855.21
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    The REDARC BCDC1240D is a 12V, 40A In-vehicle DC to DC Battery Charger designed to keep your auxiliary battery charged when driving or with portable solar panels when parked.
  5. BCDC Classic Under Bonnet 50A DC Battery Charger BCDC1250D
    NZ$941.92
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    The REDARC BCDC1250D is a 12V, 50A In-vehicle DC to DC Battery Charger designed to keep your auxiliary battery charged when driving or with portable solar panels when parked.
  6. 24V 20A Under Bonnet DC Battery Charger BCDC2420
    NZ$1,002.62
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    The REDARC BCDC2420 In-vehicle Dual Battery Charger is a 3-stage, 24V, 20A, DC to DC charger that operates from a vehicle input between 9 and 32 Volts DC.
  7. BCDC Alpha 50A DC Battery Charger BCDC12050B
    NZ$1,033.85
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    Perfect for charging batteries in a range of recreational vehicles, REDARC’s BCDC Alpha50 is a rugged 12V, 50A DC to DC battery charger, ensuring you’re always charged and never stranded.  

  8. BCDC Alpha 25A DC Battery Charger BCDC12025B
    NZ$918.85
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    With a combination of DC and solar charging, the BCDC Alpha25 is a rugged 12V, 25A DC-DC battery charger perfect for charging batteries used in a range of recreational vehicles and 4x4s so you can adventure for longer.   

  9. BCDC Trailer S - 12A Vehicle to Trailer Charger with Solar BCDC1212S
    NZ$516.35
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    Charge your trailer batteries with this 12amp charger from REDARC. The BCDC Trailer S features a DC-DC charger, an MPPT solar regulator and a smart battery isolator all packed into one compact, lightweight unit.

  10. Out of stock
    Off Grid Power Kit OFFGRIDKIT
    NZ$2,910.42 Regular Price NZ$3,233.80
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    *Online Exclusive Bundle* With all the parts you need for charging, monitoring and control of your 12V system, take your off-grid power setup to the next level.

  11. 40A Fridge Power Kit FRIDGEKITPLUS
    NZ$1,347.78 Regular Price NZ$1,457.05
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    *Online Exclusive Bundle* Designed for canopy installation, REDARC’s DC Charger Fridge Power Bundle has everything you need to power your camping fridge while charging and monitoring your secondary batteries.

  12. 25A Fridge Power Kit FRIDGEKIT
    NZ$1,211.62 Regular Price NZ$1,309.85
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    *Online Exclusive Bundle* Designed for canopy installation, REDARC’s DC Charger Fridge Power Bundle has everything you need to power your camping fridge while charging and monitoring your secondary batteries.

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Engine Bay Install
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Battery Chemistry

DC TO DC CHARGERS

Getting a dead battery when you’re off on a 4WD or caravan adventure is the worst. However, with some of the most powerful and compact DC DC battery chargers New Zealand has to offer, you can have peace of mind with REDARC. No matter what kind of dual battery system you're after, REDARC has the solution. Our wide selection of DC to DC chargers are designed to keep your battery charged whilst driving and will fully charge auxiliary batteries to a proven 100%.* learn more
*large capacity battery banks may require a few cycles to fully charge.

DC TO DC BATTERY CHARGERS

Compact in size, easy to install and suitable for 12 or 24 volt vehicle systems, REDARC's dual battery chargers work with either standard voltage alternators or smart alternators.

Choose between under bonnet or in-cabin DC to DC chargers

The REDARC range of dual battery chargers features the rugged, under bonnet-capable BCDC Classic range. These REDARC DC to DC chargers are fully sealed and potted to survive and thrive under extreme heat, as well as being water, dust and vibration proof. The BCDC Core chargers, on the other hand, are ideal for in-cabin, canopy or boot installations, offering all of the market leading features without being fully potted, saving you money on your dual battery setup.

Do you love using 4WD solar panels on your 4WD? REDARC's DC to DC battery chargers feature next generation battery charging technology, and are able to charge from Solar and DC inputs simultaneously.

 

Classic25

Core25

Classic40

Core40

Classic50

Manager30

Engine Bay

 

 

 

Cabin/ Canopy

70 - 150Ah Lead Acid/AGM

 

 

 

150 - 200Ah Lead Acid/AGM

 

 

 

200Ah + Lead Acid/AGM

 

 

 

 

60Ah LiFePO4

 

 

 

100 - 150Ah LiFePO4

 

 

200Ah + LiFePO4

 

 

 

 

Before selecting any of our battery charging products, be sure to find out the best dual battery setup for your needs with REDARC's Dual Battery Selector. Designed, built and tested in Australia for our unique conditions, our dc to dc chargers won't let you down.

Need some extra support when it comes to towing? REDARC's Tow Pro range of electric brake controllers offer a safe and effective trailer brake control system that will make you feel more secure on the road. Having the right setup for your car, caravan or 4WD is crucial to ensuring your journey goes smoothly. To get you there and back safely, you can trust REDARC.

How do I choose a DC to DC charger?

When choosing a DC to DC charger, consider the following factors:

  • Voltage compatibility
  • Current capacity
  • Battery type support
  • Smart features (e.g. temperature compensation, multi-stage charging, and equalisation charging)
  • Isolation and safety features
  • Solar integration
  • Installation and wiring
  • Warranty and support
  • Price

How big of a DC to DC charger do I need?

To work out how big of a DC to DC charger you need, you'll need to consider the power requirements of your auxiliary battery and the accessories you plan to run, as well as the charging efficiency and the charging time you want.

NEED SOME HELP?

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TECH HELP

Need a little help with choosing the right product? We're here to help! You can use our handy vehicle look-up tool, find a local installer or stockist in your area or check out our FAQs.

Still not sure? Don't stress, you can contact our helpful Tech Support Team by phone or email too.

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