Low fixed freight for AK, HI, Canada & Mexico *Excludes heavy and bulky items.
CHRISTMAS SHUTDOWN: Orders placed from Dec 23rd to Jan 2nd will not be shipped until Jan 3rd
FREE SHIPPING on orders over $99 in Contiguous US* All orders shipped from North Carolina Low fixed freight for AK, HI, Canada & Mexico
*Excludes heavy and bulky items.

Dual Battery Systems

Do you want to find out how to properly charge a second car battery safely and effectively? REDARC offers the perfect dual battery system to suit any need. Whether you want to isolate your vehicle’s start battery from your auxiliary battery or use a REDARC DC to DC charger to ensure both batteries are topped up for extended expeditions - you’ll get peace of mind for any overlanding adventures with REDARC’s dual battery setups. learn more

View as Grid List

47 Items

per page
Set Descending Direction
  1. Appliance Power Kit COFFEEKIT01
    USD $3,362.40 Regular Price USD $3,736.00

    REDARC’s DC charger Appliance Power Kit has everything you need to power your household appliances while charging and monitoring your secondary batteries.

  2. Off-Grid Power Kit OFFGRIDKIT01
    USD $2,052.00 Regular Price USD $2,280.00

    With all the parts you need for charging, monitoring and control of your 12V system, take your mobile power setup to the next level.

  3. BCDC Trailer S - 12A Vehicle to Trailer Charger with Solar BCDC1212S
    USD $225.00

    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.

  4. 50A Fuse Kit FK50
    USD $29.00
    The REDARC 50A Fuse Kit is equipped with the best quality fuses and fuse holders to make a solid connection and provide a simple, neat fuse installation.
View as Grid List

47 Items

per page
Set Descending Direction

Maintain 100% charge

REDARC’s range of 25amp, 40amp and 50amp in-vehicle battery chargers allow you to maintain 100% charge for your secondary battery.* With solar input available in our award-winning BCDC dual input battery chargers, you’ll never have to worry that your RV house batteries are not charging while you’re driving.

*large capacity battery banks may require a few cycles to fully charge.

For the next level of multi battery charging and maintenance, consider The Manager30 battery management system. The Manager30 is a state-of-the-art battery management system that knows how to put you in charge. Incorporating AC, DC, and solar panel inputs, it’s the ultimate all-in-one solution for charging multiple battery banks in recreational vehicles, caravans and camper trailers.

Avoid flat starter batteries

Adventure further and for longer with REDARC dual battery isolators. Designed to be used in multi-battery applications as a solenoid priority system, these isolators protect the primary battery from excessive discharge, while allowing the auxiliary battery to supply non-essential loads and accessories.

Take charge with a REDARC dual battery system

You provide the adventure, we’ll provide the power. Choose from our range of in-vehicle battery charging, dual battery systems and maintenance solutions to keep your vehicle powered to perfection. Shop high quality dual battery systems, DC power supplies and more online at REDARC. Free shipping available in the contiguous US, and if you need any help with the installation, contact the REDARC customer support team.



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.