Blackstone The Protector Dual Battery Isolator Accessory Kit New in Box

## Blackstone "The Protector" Dual Battery Accessory Isolator Kit

Up for sale is a brand new, unused **Blackstone Manufacturing Company "The Protector"** dual battery accessory isolator kit. This complete aftermarket management setup allows you to seamlessly integrate a secondary auxiliary battery into your electrical network without the risk of draining your primary starting power. It comes beautifully preserved inside its original retail box.

Perfect for utility rigs, overland builds, classic camper vans, trailer hookups, and specialty vehicles utilizing high-draw auxiliary electronics.

*Please note: As shown in the photos, the original cardboard retail box exhibits exterior storage shelf-wear, edge crushing, and light paper fraying along the upper tab lines. The core isolation components inside remain entirely clean, unused, structurally sound, and completely ready for custom deployment.*

### Core Functional Features:

* **Brand:** Blackstone Mfg. Co. (Chicago, IL)

* **Product Line:** The Protector Dual Battery Accessory

* **Automatic Dual Charging:** Correctly routes alternator output to replenish your 2nd auxiliary battery whenever the engine is actively running.

* **Discharge Prevention:** Automatically isolates and disconnects the main engine battery when the vehicle is shut off, protecting your cranking cell from accidental accessory drainage.

* **Streamlined Wiring:** Eliminates the ongoing manual hassle of toggle-switching or physically disconnecting heavy terminal leads between camp sessions.

### Common Vehicle & Rig Applications:

This 12V configuration acts as a reliable mechanical solution for older model platforms, trailers, and tow setups before the advent of complex computer-controlled alternating systems. It is widely used for outfitting:

* **Trucks & Tow Vehicles:** Excellent for managing secondary batteries running auxiliary tail loom electronics or integrated bed equipment.

* **Campers & RVs:** Keeps your cabin house battery running lights and small appliances independently from your starter battery.

* **Boats & Marine Craft:** Keeps auxiliary communication or fish-finding gear isolated safely from the main engine ignition system.

*Note: Please consult your vehicle’s alternator output rating and your secondary battery specifications to layout a proper inline fuse architecture during custom installation.*

### Shipping & Returns:

* Securely packed inside a sturdy secondary box with extensive padding to guarantee the vintage retail box graphics and electrical hardware arrive completely protected.

* Fast, reliable handling and departure out of California.

* Shipped via calculated weight—no automated overcharges.