Expert Service 1-661-257-9993 [Hours]

Stinger S2402

240 AMP 3-Post Battery Isolator

In Stock. Only 1 Left!

Thanks , You Pay:


with warranty

+ FREE Shipping in US 48

Order within 14 hrs 45 mins to ship 1/19

Arrives by Monday, Jan. 23 to zip 20147

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

Get FAST answers from customers ASK a Question See questions answers

General Features:

  • 240 amp Battery Isolator and Relay
  • Prevents primary battery discharge
  • Maximum current transfer
  • Extends battery life
  • Heat sink to dissipate unwanted heat
  • Universal 12V Applications
  • Dimensions: 12-1/4"W x 3-1/2"H x 4-1/2"D
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

Browse 4 questions and 5 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Great to have with bigger systems. Helps prevent your lights from dimming when your bass is turned up.
Jordan V on Nov 2, 2015
My Cousin Has This And Loves It
Francisco G on Oct 29, 2014
My brother need it for his Nissan Patrol.
Geraldine J on Dec 4, 2014
It fit my needs
Thomas T on Jul 30, 2014
Can you use 2 off these to increase amp output if alternator can support it?
A shopper on Feb 19, 2015
Best Answer: Hello,

We may not be understanding your question, so feel free to resubmit with a bit more details.

The S2402 will NOT "increase amp output" , it is simply intended to COMPLETELY isolate two batteries, and nothing else.
Reply · Report · Customer SStaff on Feb 21, 2015
· Add Answer · I Have This Question Too (0)
how much voltage will this isolator drop with 100 amps?
A shopper on Jan 2, 2017
· Add Answer · I Have This Question Too (0)
I am installing a 300 amp alternator into a 2006 Honda CR-V , I have a 2,200 watt stereo system, with one yellow top battery currently up front for main battery, looking to possibly getting a second one to the rear for just the amp, or possibly two more yellow tops, but will this 240 isolator work with my 300 amp alternator?
Antonio P on Apr 3, 2016
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number






Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Stinger S2402