3/8ft Side Post Remote Battery Disconnect Switch 12V - Remote Kill

In this review of the 3/8' Side Post Remote Battery Disconnect Switch the bottom line is simple: it is for vehicle owners who want a fast, noninvasive way to cut battery power without opening the hood. The unit is designed specifically for GM side post and other threaded stud battery terminals and includes a 100 ft range remote fob that arrives preprogrammed, making it ideal for cars, trucks, RVs, UTVs and motorcycles. The biggest reason to buy is the convenience of an on/off remote kill combined with a heavy duty solid state relay rated for 200A continuous and 1000A crank amps.

Key Features

• Designed for side post terminals: The adapter and 3/8' bolt fit GM style side post batteries and other threaded stud or hole terminals for a straight swap.
• Remote control convenience: A two-button FOB with about 100 ft range is preprogrammed so users can disconnect the battery without opening the hood.
• High current solid state relay: The integrated relay and receiver handle 200A continuous and 1000A crank amps, providing enough starter cranking in cold starts.
• Low receiver draw: The remote receiver draws only 0.001-0.005 amps while connected, minimizing parasitic drain when the switch is installed.
• Complete installation kit: The package includes a 2 AWG connection wire, copper bars, mounting hardware and a wiring diagram to simplify fitment in tight engine bays.
• Flexible placement: The harness supports negative side installation by recommendation, but positive side installation is also possible if required.

Who It's For

This product is aimed at owners of cars, trucks, RVs, ATVs, boats and similar 12V equipment who want a quick way to prevent parasitic drain or add an extra theft deterrent without cutting battery cables manually. It is especially useful for those with GM style side post batteries or anyone who prefers a remote-operated battery disconnect.

Those needing a sealed marine switch with specified corrosion protection or users who require built-in memory retention for electronics during long-term storage should consider alternative products or installation strategies, because disconnecting the battery will cause electronics like radios to lose stored settings.

Pros & Cons

Pros

• Easy installation with included adapter, 2 AWG wire and copper bars.
• Handy two-button remote control that is preprogrammed out of the box.
• Heavy duty solid state relay rated 200A continuous and 1000A crank amps for reliable starting power.
• Very low receiver current draw, minimizing additional battery drain while installed.

Cons

• Some users report mixed long-term reliability, with a minority seeing failures within months.
• Disconnecting the battery will reset electronics that store data, so radio presets and similar settings may be lost.

Specifications

Our Verdict

The 3/8' Side Post Remote Battery Disconnect Switch is a practical, good-value option for owners who want a convenient remote way to cut battery power and deter theft. Its solid state relay and generous crank rating make it capable of starting most vehicles, and the included hardware simplifies installation. Buyers should be aware of occasional reliability reports and that stored electronics will reset when the battery is disconnected.

Frequently Asked Questions

Will this fit my GM side post battery?
Yes; it ships with a side post adapter and a 3/8'-16 bolt specifically for GM style threaded stud terminals.

Does the remote need programming?
No; the remotes are preprogrammed and ready to use out of the box.

Will disconnecting the battery erase radio presets?
Yes; electronics that store data will lose memory when the battery is disconnected, so backup presets if needed.