Battery Doctor PT-WIR20138 Knife Switch gps accessory

Battery Doctor Knife Switch 20138

This top-terminal knife switch mounts directly on the negative battery post. It is designed for owners of stored vehicles, RVs and seasonal equipment who want a simple way to isolate the battery. The switch disconnects power quickly to prevent unauthorised use and unwanted drain. It suits anyone needing a straightforward mechanical cut-off for low, vertical installations.

Manual disconnect limits and safety

The switch provides a physical air gap only when the lever is thrown by hand. It carries no remote control, no electronic monitoring and no automatic reconnection feature. Users must reach the battery location each time they want to isolate or restore power. It cannot replace a relay-based system that requires timed or keyed operation.

Brass terminal construction and daily use

The 5/8 in. diameter top post accepts a standard battery cable clamp for a secure connection. Retail packaging protects the brass hardware during storage and transport. The low-profile vertical action keeps the handle clear of tight battery compartments. Regular inspection of the contact surfaces ensures reliable conductivity over time.