Diode battery isolators

Solid state construction with no moving parts, dual-voltage 12/24volt, completely waterproof and easily mounted, the Projecta Diode Battery Isolators, available in 70 and 120 Amps, are ideal for marine, 4WD and commercial applications. The diode isolators allow large auxiliary batteries to be charged with a smaller starting battery when the engine starts as they are independently charged and can not be paralleled at any time.

This overcomes the situation of a very large auxiliary battery flattening a smaller starting battery during charging and leaving you in the predicament of not having sufficient battery power to start your engine. With heavy duty switches replaced by solid state electronics, voltage surges are eliminated making the isolators extremely reliable. Vehicles with externally sensed alternators can connect the sensing wire directly from the battery allowing the alternator to produce an extra 0.5V output to compensate for the diode isolator's voltage drop.

Projecta Diode Isolators are available from automotive outlets throughout Australia from $80.00.