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

Marsoni M251S
Sale price$50.99
Pay 4 payments of $12.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Sea-Dog Smart Dual Battery Isolator - 422790-1Smart 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
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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
4.1 ★★★★★
Based on 1826 reviews
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Product Reviews
J
Verified Purchase
Jesse Simpson
Dallas, US
★★★★★ 4
Decent Kit
It's a pretty decent kit. Comes with all the lower unit options whether yours needs that particular part or not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2025
E
Verified Purchase
Eli
Belleville, US
★★★★★ 5
Alpha one gen I
Good fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
H
Verified Purchase
Hank
Dallas, US
★★★★★ 5
Quality for the price
All necessary parts good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
quality
prefect fit, best pricing over local outlets wanting twice as much
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
A
Verified Purchase
Amazon Customer
Lake Worth, US
★★★★★ 3
Ok
Not bad not great. Quality feels cheap.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025

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