Boat Battery Isolators & Charging Relays

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 1 2
Promariner Marine Battery Isolators, 1-2 Alternator, 2-3 Batteries, 70/130 Amp
    Isolators allow one or more devices to charge multiple battery banks, allowing current to flow in only one direction, preventing batteries from …
    List price: $91.53
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    API Battery Isolators
      These automatic solid state devices allow you to connect your engine alternator directly to both batteries or multiples of batteries without fear of …
      List price: $70.00
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      $64.99
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      30A Fail Safe Galvanic Isolator - Guest (Marinco)
        Product Features: Prevents the electroplating action that occurs on boats with AC power feeds Voltage Rating: 115/230VAC Frequency Rating: 50/60Hz …
        Your price:
        $262.95
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        50/60A Fail Safe Galvanic Isolator - Guest (Marinco)
          Product Features: Voltage Rating: 115/230VAC Passes necessary AC ground current for shore power safety Frequency Rating: 50/60Hz Current Rating: 50/ …
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          $331.05
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          ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 3-Bat - 12V
            ProIsoCharge SeriesModel ProIsoCharge120 1•3™ Part No. 23124 System Volts DC 12Max DC Amps 120 AmpAlternator Input1Battery Outputs 3Size 6. …
            List price: $210.39
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            ProMariner ProIsoCharge Battery Isolator 120Amp 1-Alt 2-Bat - 12V
              ProIsoCharge SeriesModelProIsoCharge120 Amp, 1 Alt, 2 BatteryPart No. 23121System Volts DC 12Max DC Amps 120 AmpAlternator Input1Battery Outputs …
              List price: $196.30
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              ProMariner ProIsoCharge Battery Isolator 180Amp 1-Alt 3-Bat - 12V
                ProIsoCharge SeriesModel ProIsoCharge180 1•3 Part No. 23125 System Volts DC 12Max DC Amps 180 AmpAlternator Input1Battery Outputs 3Size 7.55(l) …
                List price: $269.36
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                ProMariner ProIsoCharge Battery Isolator 130Amp 2-Alt 4-Bat - 12V
                  ProIsoCharge SeriesModel ProIsoCharge130 2•4 Part No. 23127 System Volts DC 12Max DC Amps 130 AmpAlternator Input2Battery Outputs 4™ …
                  List price: $387.83
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                  ProMariner ProIsoCharge Battery Isolator 250Amp 1-Alt 3-Bat - 12V
                    ProIsoCharge SeriesModel ProIsoCharge250 1•3 Part No. 23126 System Volts DC 12Max DC Amps 250 AmpAlternator Input1Battery Outputs 3Size 8.875(l) …
                    List price: $308.86
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                    ProMariner ProIsoCharge Battery Isolator 180Amp 1-Alt 2-Bat - 12V
                      ProIsoCharge™ SeriesModel ProIsoCharge180 1•2 Part No. 23122 System Volts DC 12Max DC Amps 180 AmpAlternator Input1Battery Outputs 2Size 6. …
                      List price: $224.29
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                      $180.75
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                      ProMariner ProIsoCharge Battery Isolator 250Amp 1-Alt 2-Bat - 12V
                        ProIsoCharge SeriesModel ProIsoCharge250 1•3 Part No. 23123 System Volts DC 12Max DC Amps 250 AmpAlternator Input1Battery Outputs 2Size 6.95(l) …
                        List price: $254.34
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                        70 Amp 2 Alternator 3 Bank Battery Isolator - Charles
                          All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                          List price: $239.52
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                          $195.15
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                          130 Amp 1 Alternator 2 Bank Battery Isolator - Charles
                            All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                            List price: $219.07
                            Your price:
                            $178.55
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                            190 Amp 1 Alternator 3 Bank Battery Isolator - Charles
                              All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                              List price: $296.63
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                              $241.75
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                              70 Amp 1 Alternator 3 Bank Battery Isolator - Charles
                                All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                                List price: $169.42
                                Your price:
                                $138.05
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                                90 Amp 1 Alternator 2 Bank Battery Isolator - Charles
                                  All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                                  List price: $177.31
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                                  $144.55
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                                  60 AMP FAIL SAFE GALVANIC ISO - ProMariner
                                    Failsafe galvanic isolators interrupt galvanic current with other boats in your marina when installed on a boat which is connected to shore power. It …
                                    List price: $442.89
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                                    30 AMP FAIL SAFE GALVANIC ISO - ProMariner
                                      Failsafe galvanic isolators interrupt galvanic current with other boats in your marina when installed on a boat which is connected to shore power. It …
                                      List price: $332.69
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                                      Remote Battery Switches - ML-Remote Battery Switches -Blue Sea Systems
                                        500 Amp magnetic latching (bi-stable) switch provides high-amp switching under load, manually or from remote locations Manual override knob provides …
                                        List price: $212.87
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                                        $180.95
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                                        Blue Sea Systems Si-Series Automatic Charging Relay
                                          Automatically manages the charging of two battery banks and isolates batteries during starting to protect sensitive electronics. 120 Ampere …
                                          List price: $109.99
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                                          $93.49
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                                          L-Series Solenoid Switch
                                            Hermetically sealed contacts, vaporproof. Ignition protected. Pulse circuit requires very low current draw when contact is closed. Input voltage: 9 …
                                            List price: $216.98
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                                            $184.43
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                                            Mini Battery Switch & Auto Charging Relay 65 Amp - Blue Sea Systems
                                              Simplifies switching and automates charging for a complete two battery bank solution for outboard powered boats. The Mini Add-A-Battery offers a …
                                              List price: $119.49
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                                              $101.56
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                                                Optimized heat sink design for maximum performance. Minimized voltage drop across isolation barrier using Schottky type diodes. Each output …
                                                List price: $212.79
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                                                $180.23
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                                                  Rated for 70 amps maximum alternator. Operates on 6, 12, 24 & 32 volt negative ground systems. Electrical current able to flow from DC source …
                                                  List price: $91.53
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                                                    Connect engine alternator to two batteries or battery banks for independent battery charging. Isolates batteries and prevents a higher charged …
                                                    List price: $82.69
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                                                    $68.38
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                                                      For 12-36 volt, DC negative ground electrical systems. Isolate each battery to prevent the battery with the higher charge from draining into the …
                                                      List price: $96.49
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                                                      $71.49
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                                                        Prevent galvanic corrosion between boats due to dissimilar metals. Gold plated terminals provide superior corrosion resistance for harsh environment …
                                                        List price: $382.29
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                                                        $324.95
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                                                          Designed to be a viable alternative to using a galvanic isolator with status monitor, as is now required by ABYC. Offers all of the benefits and …
                                                          List price: $705.99
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                                                          $607.14
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                                                          160 Amp 1 Alternator 3 Bank Battery Isolator - Charles
                                                            All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                                                            List price: $287.93
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                                                            $234.65
                                                            Out of stock
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                                                            70 Amp 1 Alternator 2 Bank Battery Isolator - Charles
                                                              All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                                                              List price: $162.71
                                                              Your price:
                                                              $132.65
                                                              Out of stock
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                                                              160 Amp 1 Alternator 2 Bank Battery Isolator - Charles
                                                                All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                                                                List price: $241.08
                                                                Your price:
                                                                $196.45
                                                                In stock
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                                                                190 Amp 1 Alternator 2 Bank Battery Isolator - Charles
                                                                  All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/ …
                                                                  List price: $280.08
                                                                  Your price:
                                                                  $228.25
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                                                                  34 Items | 1 of 2 pages
                                                                   1 2
                                                                  Boating Know How
                                                                  ACR

                                                                  Selecting the Correct Automatic Charging Relay

                                                                  When selecting a particular Automatic Charging Relay (ACR), there are many things to consider in order to get the correct system for your application. You will need to ... read more take into account the continuous rating and the intermittent rating. The continuous rating will need to reach levels above the highest alternator output rating, and the intermittent rating will need to be above the biggest load for the battery. You will then need to carefully consider which preset ACR settings to choose, followed by the product features.

                                                                  Preset ACR Settings



                                                                  Combine Voltage:
                                                                  • Batteries will share the present charge.
                                                                  • Voltage:13.0 at 2 minutes.
                                                                  • Closed relay and combined batteries.
                                                                  Open Voltage:
                                                                  • No present charge; charge input loads will not exceed set limit.
                                                                  • Voltage: 12.75 at 30 seconds.
                                                                  • Batteries do not share the charge.
                                                                  Under Voltage Lockout:
                                                                  • Charge may or may not be present.
                                                                  • Voltage: 9.5.
                                                                  • Batteries do not share the charge.

                                                                  Product Features

                                                                  Auxiliary Battery Priority (Optional):
                                                                  • Combines batteries and closed relays for extended length of time.
                                                                  • Open voltage ranging between 12.25 and 12.75 volts.
                                                                  • Engine must be running.
                                                                  Start Isolation (Optional):
                                                                  • Batteries are isolated, and the relay is open.
                                                                  • Vulnerable products will be shielded by isolated batteries.
                                                                  • Engine must be starting.
                                                                  Start Assist:
                                                                  • Closed relay, combined batteries.
                                                                  • Batteries share power.
                                                                  • Engine must be starting.
                                                                  Engine Isolation:
                                                                  • One relay will be open, while the other will be closed.
                                                                  • Two engines must be running.

                                                                  We do recommend consulting with a mechanic or technician in the process of choosing an ACR and its features.
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