It will typically be stamped onto a metal plate on the alternator itself. The max amps your alternator will output can sometimes be found in the spec sheet of the vehicle. Size your battery isolator to handle the max amp output from your alternator. Although you’ll likely never see your full alternator output amperage going through your isolator, it’s really the only base line you’ve got. Your battery isolator will depend on the size of your alternator. This number is simply the amount of potential amps that could be flowing through the device from your alternator to your house battery bank. Most Battery isolators are rated in terms of amps. How to Choose a Battery Isolator for a Camper Van: Questionably Reliable Crowd-Sourced Data.How to determine Battery Isolator Size:.How to Choose a Battery Isolator for a Camper Van:.Need help configuring a Dual Rectifier? Click Here.įor current levels less than 100 amps, or exceeding 300 amps, please contact our engineering department at 858.720.1339.įor OEM applications, military and fleet sales, special applications, or general questions please call us at 858.720.1339. Once the vehicle is started, release the momentary switch and POWER-GATE will default back to its full isolation mode.ĭual Rectifiers can handle between 100 amps and 300 amps. For example, if the main starting battery is discharged to the point where the vehicle won’t crank, by pressing a mini logic-level momentary switch, the Battery Combine feature will enable the auxiliary battery to pass current to the main starting battery, at which point cranking can take place. When the Battery Combine Feature is activated, the default isolation mode is temporarily overridden and both MOSFET arrays are forced into the energized mode. New is the addition of an optional Battery Combine feature. If an alternate trigger configuration is required, contact engineering to discuss your needs. If the starter circuit is inaccessible, the device can be factory programmed for an alternate trigger like switched system voltage from an accessory port. The purpose of this circuit is to insure the Alternator’s regulator excites at vehicle start-up. When triggered, the user will note a four second delay between trigger initiation and alternator excitation. This trigger is initiated when the violet wire is momentarily connected to the engine start circuit typically tapped at the starter solenoid, or the wires leading to the starter solenoid. When system voltage (12 or 24 volts respectively) is applied, the MOSFET array located between the Main battery cathode and Alternator input anode is enhanced for a period of 60 seconds. ![]() Included on every POWER-GATE Dual Rectifier is a violet Alternator excitation wire. POWER-GATE is recommended by top battery manufacturers to insure that DC power gets to where it’s needed without the excessive heat and voltage loss typified by more common, lesser performing silicon and Schottky devices. Dual rectifiers are epoxy encapsulated in a custom ABS enclosure and are well suited for hostile environments. Ultra-low on-resistance means devices require no heat sinking and no airflow at currents up to 300 amps. ![]() A dedicated excitation circuit insures hassle-free integration with internally regulated alternators. Dual rectifiers are commonly deployed in dual battery configurations where each battery may be discharged independent of the other.Ī common problem with conventional “marine” or “RV” style isolators (aside from performance issues related to the obvious voltage drop and associated heat) is dealing with an internally regulated alternator. DC current will flow from the alternator to the batteries, but current will not flow between the batteries when discharged. Note: Generation 3.0 not for new applications.******Ī dual rectifier has all the same outstanding performance characteristics of a single rectifier, but provides discharge protection for two batteries two, one-way electrical valves in a single package. Internationally patented MOSFET technology No de-rating required over full temperature range ![]()
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