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Dual Battery Calculator

Design the perfect dual battery setup for your 4WD

Why Use a Dual Battery System?

A dual battery system is essential for anyone who needs reliable power away from mains electricity. Whether you're camping, four-wheel driving, or need to run accessories while your engine is off, a properly designed dual battery system ensures you never get stranded with a flat starting battery.

Key Benefits:

  • Keep your starting battery isolated and fully charged
  • Run fridges, lights, and accessories without worry
  • Extended power for multi-day trips
  • Professional grade components for reliability

Need Expert Advice?

Our battery specialists can help design the perfect dual battery solution for your specific needs