True® Large 12v Dual Battery Kit

(27 customer reviews)

$130.95$150.95

Best dual battery setup kit with voltage-sensitive relay (VSR) for adding that 2nd or 3rd battery to the system in your car, truck, van, SUV, RVs, boat, or whatever you wish.

  • Heavy-duty & guaranteed no volt drop
  • Compact, durable and smarter
  • Free Shipping or visit return and terms policies
SKU: DBK12LARGE Categories: ,

Description

12V Dual battery wiring kit contents

  •  1 (SBI) Smart Battery Isolator install kit with mounting screws
  •  20 feet #6 high flex red cable with tinned copper cable lugs
  •  3 feet #6 high flex black cable with tinned copper cable lugs
  •  2 positive brass alloy battery terminal ends
  •  1 negative brass alloy battery terminal end
  •  3 loose crimp-on tinned copper cable lugs
  •  2 sections of adhesive lined shrink tube
  •  5 zip ties
  •  1 – 2nd battery kit installation booklet
  • 12v dual battery wiring kit diagram included
  • Official retailer of True® dual battery relay kit
  • Delivery: USPS first class or priority mail

A TRUE exclusive!

best dual battery kit 2022

Product Features

  • Best dual battery install kit for boats, cars, 4WD, trucks, Caravan, RVs, or  general automotive & marine application
  • 140 Amp Voltage Sensitive Relay
  • Priority charging for starting battery
  • Alternator outputs up to 150 amps
  • The True® dual battery charging kit is a fully automatic battery management
  • Easy to install DIY 12V dual battery wiring kit  for trucks and boat with wiring diagram
  • Waterproof, shockproof, casing, and heat resistant cables up to 130 degrees for safe and efficient use of the auxiliary battery system.

The 12v dual battery system kit utilizes the simplest and most advanced technology to keep all your batteries charged using the engine’s electrical system but isolating the starting battery so you never get stranded.

The True® dual battery install kit uses the same voltage-sensitive relay we have installed in our boat and camper to keep the secondary batteries charged but isolating the starter battery system so it stays charged. The great thing about these is that you don’t have to reroute any alternator wires and they switch charging automatically.

The best dual battery system kit allows a safe charging and separation of starting and auxiliary batteries in all types of boats, RVs, 4WD, camper, truck, caravan, and even solar applications. When the engine is started, starting and auxiliary batteries are separated allowing only the starting battery to be charged. When the charge voltage reaches 13.3 volts the voltage-sensitive relay engages allowing both the starting and auxiliary batteries to be charged.

This is indicated by the light in the top LH corner being illuminated.

When the engine is stopped and the battery voltage falls below 12.8 volts the (VSR) Voltage-sensitive relay disengages separating the start and auxiliary batteries, at this point, the indicator light will be out and the True® best dual battery cable kit continues to power any accessories without risk of draining the starting battery.

True® Smart Battery Isolator Kit sensing features

The (VSR) voltage-sensitive relay also has dual sensing technology which detects the charge of both batteries. If either battery is receiving a charge, e.g. a battery charger is connected to the secondary battery; the VSR will engage and charge both batteries. True®  technology is known for 12v dual battery system kit  heavy-duty performance.

The True® 12v dual battery cable kit is easy to install and comes with all components and instructions required to complete the install. There is no need to cut into any factory wiring that may void your vehicle’s manufacturer’s warranty.

Using a True® dual battery kit for trucks and boats, vehicle owners can ensure a more efficient and reliable power distribution system for their vehicles.

CUSTOMER REVIEWS, PHOTOS AND VIDEOS

(These videos are not represented as an “Official Installation video” by True Amalgamated and True Amalgamated accepts no responsibility for its content. It is produced by our expert followers as stated. Follow entirely at your own risk.)

 

 


Reviews from our Amazon store..

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Dual battery relay kit for truck and boat

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The True® dual battery install kits are popular among off-road enthusiasts, campers, overlanders, and other individuals who need reliable power for extended trips or heavy use of electrical accessories.

 

2019 GM Truck  dual battery setup kit from custom youtube video

True® heavy-duty second battery kit installed in RV

 

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