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Battery Isolators for Boats and RVs

Products: 1 - 14 of 14
Battery Isolator, 1 Alternator 2 Battery 120A Input 2530

Battery Isolator, 1 Alternator 2 Battery 120A Input 2530

Mfr. Marinco | Mfr No. 2530

Battery Isolator 1 Alternator, 2 Battery, 120 Amp Input, 2530
Not Currently Available

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Battery Isolator, 130 Amp, 2 Batteries, 1 Alternator

Battery Isolator, 130 Amp, 2 Batteries, 1 Alternator

Mfr. API Marine | Mfr No. BI2-130A

Battery Isolator, 130 Amp, 2 Batteries, 1 Alternator...
$122.59
On Sale


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Battery Isolator, 130-AMP, BI 3-130

Battery Isolator, 130-AMP, BI 3-130

Mfr. API Marine | Mfr No. BI3-130

API New Battery Isolator, 130-AMP, BI 3-130...
$134.85
On Sale


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Battery Isolator, 165-AMP, BI 2-165

Battery Isolator, 165-AMP, BI 2-165

Mfr. API Marine | Mfr No. BI2-165

API New Battery Isolator, 165-AMP, BI 2-165...
$195.45
On Sale


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Battery Isolator, 200-AMP, BI 2-200

Battery Isolator, 200-AMP, BI 2-200

Mfr. API Marine | Mfr No. BI2-200

API New Battery Isolator, 200-AMP, BI 2-200...
$195.45
On Sale


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Battery Isolator, 240 Amp, BI 2-240

Battery Isolator, 240 Amp, BI 2-240

Mfr. API Marine | Mfr No. BI2-240

API New Battery Isolator 2-240 Amp, BI2-240.Isolator for 2 Batteries, 1 Alternator
$195.45
On Sale


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Sierra Battery Isolation Switch / Solenoid, 12 V

Sierra Battery Isolation Switch / Solenoid, 12 V

Mfr. Sierra / Seastar Solutions | Mfr No. BA58003

Sierra Battery Isolation Switch / Solenoid, 12 V
$29.76


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Arco Marine, 120 Amp Isolator, 1 Alt, 2 Batts

Arco Marine, 120 Amp Isolator, 1 Alt, 2 Batts

Mfr. Arco Marine | Mfr No. BI-1202

Arco Marine, 120 Amp Isolator, 1 Alt, 2 Batts
$118.71
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Arco Marine, 70 Amp Isolator, 1 Alt, 2 Batts

Arco Marine, 70 Amp Isolator, 1 Alt, 2 Batts

Mfr. Arco Marine | Mfr No. BI-0702

Arco Marine, 70 Amp Isolator, 1 Alt, 2 Batts
$72.78
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Arco Marine, 70 Amp Isolator, 1 Alt, 3 Batts

Arco Marine, 70 Amp Isolator, 1 Alt, 3 Batts

Mfr. Arco Marine | Mfr No. BI-0703

Arco Marine, 70 Amp Isolator, 1 Alt, 3 Batts
$106.11
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Arco Marine, 70 Amp Isolator, 2 Alts, 2 Batts

Arco Marine, 70 Amp Isolator, 2 Alts, 2 Batts

Mfr. Arco Marine | Mfr No. BI-2702

Arco Marine, 70 Amp Isolator, 2 Alts, 2 Batts
$152.67
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Arco Marine, 70 Amp Isolator, 2 Alts, 3 Batts

Arco Marine, 70 Amp Isolator, 2 Alts, 3 Batts

Mfr. Arco Marine | Mfr No. BI-2703

Arco Marine, 70 Amp Isolator, 2 Alts, 3 Batts
$192.77
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Arco Marine, 120 Amp Isolator, 2 Alts, 3 Batts

Arco Marine, 120 Amp Isolator, 2 Alts, 3 Batts

Mfr. Arco Marine | Mfr No. BI-3203

Arco Marine, 120 Amp Isolator, 2 Alts, 3 Batts
$307.99
On Sale


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Professional Mariner, Isolator

Professional Mariner, Isolator

Mfr. ProMariner

Operates on 6, 12, 24 & 32 volt negative ground systems. Electrical current able to flow from
$79.70 - $164.87

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Products: 1 - 14 of 14
Page:  1

A boat battery isolator will let you charge 2 or more batteries from a single charging source.
Ask. Answer. Discuss.
Post a question or comment about Battery Isolators for Boats and RVs to our online boating community.
Question
Marine Battery Isolator

My outboard alternator puts out 60 amps but the batteries are 115 ampere hours. Does this make a difference on which battery isolator I puchase?

Submitted by: Rickster
Answer

You just need to make sure the isolator can handle the alternator voltage the batteries dont matter.


Question
battery isolator

I need an isolator for my boat, it has a 1985 50 hp Mercury outboard & I have no clue what amperage isolator to get. I am running a starting battery & a marine battery for accessories. Can you help me with this?

Submitted by: Vette35th
Answer

That engine is likely only charging a 16 amps max…

The smallest Battery Isolator we offer. It will work well for you.


Question
trolling batteries

I’ve got 2003 90hp merc 24v trollingmotor, batteries wired in series for 24v. How would I separate the 2 batteries to charge off motor?

Submitted by: gunny
Answer

When two 12 volt battery’s are hooked together ( in series ) positive terminal to negative terminal and negative terminal to positive terminal they become 24 volt. If you want to use both battery’s in a 12 volt application, connect the positive terminals together and the negative terminals together. Now the batters are in parallel giving you a large reserve 12 volt battery bank.


Question
what size isolator do i need?

I have a 2002 ford focus zx3 with a 2.0 engine and i would like to know what size (amps) isolator that i should purchase. i have two yellow top optima batteries.

Submitted by: kenton
Answer

It is based on alternator output - a 70 amp should work for you.


Question
dual battery isolator hookup

I have a 1978 SeaRay with a chevy 454 sterndrive bravo one. I want to hook up dual batterys so that the starter battery is charged first and the accessorie battery is charged second.

Do you sell the isolator?
What is the correct way to hook up the alternator and batteries to accomplish what I want?

Submitted by: Brad
Answer

Yes we sell Battery Isolators.

You need to know the amperage output of your alternator.

Hooking them up is easy - power wire from alternator to isolator - power wires to each of the batteries.
The 130 Amp, 2 Batteries, 1 Alternator Battery Isolator is a likely option for you.

The isolator will come with a wiring diagram


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