SKU: 42491746650

Sea-Dog Smart Dual Battery Isolator [422790-1]

$57.59 $63.99
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

Sea-Dog Smart Dual Battery Isolator [422790-1]Smart Dual Battery Isolator This Smart Dual Battery Isolator is ideal for dual battery applications. Allows two batteries to automatically charge at the same time and then isolates the batteries, ensuring the starting battery is always charged and ready for use. Automatically engages or disengages the circuit at pre set voltages by sensing the input voltage generated, eliminating the possibility of discharging the primary starting battery. Cut in

Sea-Dog Smart Dual Battery Isolator [422790-1]
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 42491746650

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4.2 ★★★★★
Based on 471 reviews
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Product Reviews
Z
Verified Purchase
Zack
Carnegie, US
★★★★★ 4
slightly smaller than sky high
Size: 30 FT, Style: 0 (1/0) AWG RED
wire is okay but it is definitely on the thinner side, was slightly smaller than my sky high 1/0 wire but for the price difference this is definitely worth it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2025
C
Verified Purchase
chase guerlain
Dallas, US
★★★★★ 5
Heavy gauge battery cable
Size: 10 FT, Style: 0 (1/0) AWG RED
Heavy duty works good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 11, 2026
J
Verified Purchase
jeff
Cuba, US
★★★★★ 5
Great product
Size: 5 FT, Style: 0 (1/0) AWG RED
Good quality cable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
A
Verified Purchase
Astrid Falcon
Massapequa, US
★★★★★ 5
Heavy duty and has lasted three years so far
I have had this relay installed in the engine bay of my Lexus RX 300, functioning to link the front battery to the additional battery in the trunk whenever the ignition is on. The relay has worked reliably for about three years now with no complaints besides one minor comment, be careful when threading down the nut on the Low voltage side. It is prone to stripping
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2025
D
Verified Purchase
Dr.Ortiz Ayala
Birmingham, US
★★★★★ 5
It delivers as advertised.
Works as advertised, and is easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2025

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