All Littelfuse Cole Hersee brand battery isolators have a per leg rating equal to half the alternator rating. Integral heat sink provides efficient heat dissipationīattery isolators have a 'per leg' rating which indicates the maximum current it can deliver to either battery.Electronic components are embedded to give excellent protection from adverse conditions, such as contamination and vibration.General purpose Battery Isolators for 12-36V DC negative ground systems.A 4-stud battery isolator can be used with older pattern alternators (in this case the 4th stud will remain unconnected), but a 3-stud battery isolator cannot be used with the Delcotron-type alternator. The newer alternators were first introduced by Delco and are therefore sometimes called 'Delcotron-type alternators'. The small 4th stud is for connection to a circuit switched by the ignition switch. Most alternators on new vehicles have an integral electronic voltage regulator that requires the use of the 4-stud battery isolator. The amp rating of each item is the maximum alternator rating. In addition, both batteries can be charged simultaneously from one source. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.įor vehicles with two batteries, these devices electrically isolate the batteries to prevent the battery with the higher charge from draining into that with the lower charge. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. The voltmeter is flashing after disconnection.ģ: The disconnection voltage of the isolator is 13.3V, and it will be automatically disconnected when the main battery voltage is lower than 12.4V after emergency borrowing.Ĥ: When the voltage is between 13.5V and 14.5V, keep charging, and the voltage will be disconnected immediately when the voltage reaches 16V.ĥ: When the engine detects that the voltage is lower than 13V after the engine is turned off, the isolator will be disconnected for 10 seconds.Ħ: When the main battery lacks power and the engine cannot be started, press the emergency button to switch on the auxiliary battery.Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. The main and auxiliary voltmeters display normally.Ģ: When the main and auxiliary voltmeters show that the voltage is below 13V for 10 minutes, disconnect the isolator immediately when the voltage is below 12.5V. With this Voltage Sensitive Relay, no worries of the engine cannot be started when the original battery out of power, by pressing the emergency button to turn on the sub battery to start the engine.ġ: First check whether the main battery voltage is at 12.5V, start the engine and start the isolator after detecting that the voltage is higher than 13.5V for 5 seconds.Don’t need to drain the original battery on your vehicles trying out your new devices when off-roading, the dual battery isolator will be a nice solution to lengthen the life of the primary battery when your vehicle engine is off.
BATTERY ISOLATOR RELAY AC DELCO PORTABLE
This smart battery protector is portable and fits a wide variety of vehicles as 12V/24V Jeep, Truck, SUV, RV, Caravan & Camping Applications.Dual battery isolation protection controller, which automatically detects and identifies the system voltage after the isolator is powered on.High current 300 Amp, Universal application 12V/24V, LCD display voltage of two batteries.
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