• ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V
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ProMariner

ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V

ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V

OM-PROMARINER-PROISOCHARGEBA-23121

$122.51
$252.99 $122.51
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Overview

Manage charging from one alternator to two battery banks with the ProMariner ProIsoCharge120 1-2 battery isolator. For boats with 12V systems, it distributes alternator output digitally and prioritizes banks needing charge while protecting the engine-start battery.

Key features

  • Zero-voltage-loss isolation avoids the charging voltage drop associated with traditional diode isolators.
  • Charged batteries are taken offline so available charging output can serve discharged banks or banks under load.
  • Automatic engine-battery priority helps protect the starting battery as charging demand changes.
  • LED indicators show alternator power and bank charging status, with fault indications for high or low alternator output and high-voltage conditions.
  • Ignition-controlled operation activates battery-bank management only when ignition power is on.
  • An advanced-regulator remote-sense connection supports regulator integration.

Specifications

  • Brand: ProMariner
  • Series: ProIsoCharge
  • Model: ProIsoCharge120 1-2
  • Part number: 23121
  • System voltage: 12V DC
  • Maximum DC current: 120 amps
  • Alternator inputs: 1
  • Battery outputs: 2
  • Dimensions: 5.35 inches long x 5.875 inches wide x 3.125 inches high
  • Weight: 2 lbs

Specifications

BrandProMariner
Manufacturer part #23121
UPC031669231214
Boxed dimensions8 x 7 x 5 in
Shipping weight2.15 lb
Country of originTAIWAN
⚠ California Prop 65 Warning: WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Shipping & returns

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Standard shipping is free on every U.S. order — no minimum. Need it faster? Faster delivery options are available at checkout for qualifying orders. In-stock orders ship quickly with tracking; oversized and freight items may ship separately and can take a little longer. International rates are calculated at checkout.

30-day returns

Request a return within 30 days of delivery. Authorized returns are subject to a 15% restocking fee. Return shipping is paid by the buyer; items must be new and in original packaging. See our refund policy.

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