This 9th generation 12v heavy-duty GMC Sierra dual battery kit is a superior product that uses a very unique designed and programmed SBI (PEP) when it comes to dealing with the stator charging mechanism.
True® GMC Sierra Dual Battery Kit 12V 140A Automatic Management
Price range: $132.95 through $152.95
The True® brand is the best smart battery isolator kit for the GMC series! Made in the USA, the True® – GMC® dual battery kit is a heavy-duty 12v & 14A battery management system known for being compact, easy to install, waterproof, and heat-resistant.
- Automatic 140A Smart Battery Management
- Transparent Case with LED Indicator
Silverado Battery Isolator Kit Contents
- 1 True® Smart Dual Battery Isolator (SBI) 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 installation instructions booklet
The True® Dual Battery Isolator stands out for its smart design, rugged durability, and ease of use — making it a top choice for off-roaders, campers, and audio enthusiasts. Here are its best features:
Best Features of the True® Dual Battery Isolator
- Automatic Voltage Sensitive Relay (VSR)
- Engages at 13.3V and disengages at 12.8V, ensuring your main battery stays charged while your auxiliary battery powers accessories.
- Solid-State Design
- No moving parts means greater reliability and longer lifespan — ideal for harsh environments like marine, off-road, or high-vibration setups.
- IP65 Rated for Water, Dust, and Vibration Resistance
- Built to withstand extreme conditions, making it perfect for 4WDs, boats, RVs, and work vehicles.
- Compact and Easy to Install
- Fits neatly into tight spaces and includes clear instructions. Some kits even come with silicone insulators and 3M dual lock fasteners for secure mounting.
- LED Voltmeter and Dual Display (on select kits)
- Lets you monitor battery status at a glance — a handy feature for managing power on the go.
- Prevents Battery Drain and No-Start Situations
- Keeps your starting battery isolated from accessory loads, so you never get stranded due to a dead battery.
- Orders are shipped via USPS First Class or Priority Mail, with up to $100 insurance included.
- Most orders are processed within 1–3 business days and come with tracking.
- The company aims for same-day shipping if placed before 2:30 PM PT, excluding weekends and U.S. federal holidays.
- Best of all, shipping is free—no hidden fees.
| Location | USA, CANADA, AUSTRALIA |
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