Battery Isolators for Boats and RVs

Discover top-quality battery isolators from trusted brands like Cole Hersee, ProMariner, and more. A battery isolator is the ultimate solution for separating your starting battery from your house battery. With its innovative design, it enables your charger to efficiently charge both batteries while exclusively powering your house gear from the house battery. Say goodbye to engine starting issues with our reliable battery isolators.

16 Products

From: $103.95
ProMariner Battery Isolators
Mfr: ProMariner
$193.49
Battery Isolator, 200-AMP, BI 2-200
SKU: 12203
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Mfr: STERNDRIVE ENGINEERING
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Mfg# BI2-200
$143.76
Battery Isolator, 130 Amp, 2 Batteries, 1 Alternator
SKU: 115777
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Mfr: STERNDRIVE ENGINEERING
|
Mfg# BI2-130A
$193.49
Battery Isolator, 240 Amp, BI 2-240
SKU: 12508
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Mfr: STERNDRIVE ENGINEERING
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Mfg# BI2-240
$143.76
Battery Isolator, 130-AMP, BI 3-130
SKU: 11893
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Mfr: STERNDRIVE ENGINEERING
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Mfg# BI3-130
$193.49
Battery Isolator, 165-AMP, BI 2-165
SKU: 11825
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Mfr: STERNDRIVE ENGINEERING
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Mfg# BI2-165
$236.00
Arco Marine, 70 Amp Isolator, 2 Alts, 3 Batts
SKU: 206088
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Mfr: Arco Marine
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Mfg# BI-2703
$94.34
Arco Marine, 70 Amp Isolator, 1 Alt, 2 Batts
SKU: 206103
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Mfr: Arco Marine
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Mfg# BI-0702
$365.30
Arco Marine, 120 Amp Isolator, 2 Alts, 3 Batts
SKU: 206022
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Mfr: Arco Marine
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Mfg# BI-3203
$134.11
Arco Marine, 70 Amp Isolator, 1 Alt, 3 Batts
SKU: 206101
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Mfr: Arco Marine
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Mfg# BI-0703
$188.80
Arco Marine, 70 Amp Isolator, 2 Alts, 2 Batts
SKU: 206096
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Mfr: Arco Marine
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Mfg# BI-2702
$164.09
Arco Marine, 120 Amp Isolator, 1 Alt, 2 Batts
SKU: 206100
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Mfr: Arco Marine
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Mfg# BI-1202
$48.56
Sierra Battery Isolation Switch / Solenoid, 12 V
SKU: 260495
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Mfr: Sierra / Seastar Solutions
|
Mfg# BA58003
$281.99
Blue Sea ML Series Automatic Charging Relay with Remote Control, p/n 7620
SKU: 243262
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Mfr: Blue Sea Systems
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Mfg# 7620
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LFS# BSS7620
$93.12
Cole Hersee 48090 Heavy Duty Battery Isolator, 90A
SKU: 562031
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Mfr: Cole Hersee
|
Mfg# 48090-BX
$223.04
Professional Mariner, 70 Amp Isolator, 2 Alt. 3 Batteries
SKU: 229142
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Mfr: ProMariner
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Mfg# 2-70-3