#BATTERY ISOLATOR RELAY AC DELCO MANUAL#
#BATTERY ISOLATOR RELAY AC DELCO FULL#
#BATTERY ISOLATOR RELAY AC DELCO PLUS#

#BATTERY ISOLATOR RELAY AC DELCO PLUS#

In addition, we are often asked to fit auxiliary outputs into the rear cargo areas, power outlets via anderson plugs to the towbar for vans and campers, plus solar inputs at the front and/or rear. The spiral wound design of the Optima Battery has greater surface area (to accept charge), on thinner plates, where there is less resistance. Only use Deep Cycle Batteries in Auxiliary applications. Even though a battery may have an Ah rating, it is not necessarily a Deep Cycle Battery, which are designed to have repeated deep discharge or Cycling. It is rating the capacity to have a long slow discharge, often for use as an Auxiliary Battery in 4WD vehicles. Is the storage capacity of the battery and is the current the fully charged battery will deliver over a 20 hour period, before the voltage drops to 10.5V, at temperature of 25C. It is rating the capacity of the battery to run the vehicle in normal conditions & load if the charging system has failed.Īmp Hour or correctly termed Amp Hour at 20hr Ah Is the time, in minutes, that a battery can deliver 25 amps until the voltage drops to 10.5 volts, at temperature of 25C. It is a rating on high current output for starting. Sometimes in life it’s worth paying a bit more.ĬCA is the measurement of current, Amps, that the fully charged battery cab deliver in 30 seconds, while maintaining voltage above 7.2 volts, at temperatures of -18C.

#BATTERY ISOLATOR RELAY AC DELCO FULL#

Our experience is that an Optima will fully re-charge in a couple of hours, whereas with other isolator and battery combinations will take 6 to 7 hours driving and even then, will not reach full charge. More charge is used to restore the battery, rather than overcoming resistance in the battery. The other advantage of using the BCDC style, in conjunction with the Optima, is it will have significantly reduced re-charge times, due the Optima battery having significantly less internal resistance (see below). It has greater surface area which leads to greater CCAs (Cold Cranking Amps, good for starting and winching), but more importantly for most applications, more RC (Reserve Capacity) – which is where the power is drawn for fridges and lighting etc.

Our recommendation for an under bonnet fit is the Optima spiral wound battery, compared to the usual parallel plated battery. We also fit the Projector 25 amp DC to DC Charger/Isolator for a budget conscious alternative. We recommend the RedArc BCDC Charger/Isolators, either the 25 amp for up to 200ah batteries and the 40 amp for battery configurations over 200ah. The Voltage Booster lifts the voltage output by 0.5 volts, hence the auxiliary battery will charge at around 14.1 volts. In vehicles with Temperature Sensitive alternators you have the option of using a BC to DC Charger/Isolator or the VSR style in conjunction with a Voltage Booster. This is sufficient for an OE battery configuration, but not for auxiliary batteries in 4x4s. With Temperature Sensitive Alternators, the maximum voltage is limited by temperature, but in our experience rarely outputs over 13.6 volts.

#BATTERY ISOLATOR RELAY AC DELCO MANUAL#

The VSR style is quite compatible with older charging systems, providing reliable charging of the aux battery in those era vehicles, rather than using a manual switch, often forgotten. The auxiliary battery inevitably goes flat. If the voltage drops below 12.3 volts, it disconnects the auxiliary battery, hence if a VSR is used in conjunction with a Variable Output alternator the auxiliary battery is constantly being connected and disconnect – as the voltage steps up and down. When the voltage is higher than approximately 13.6 volts, the VSR connects the auxiliary battery into the charge circuit. The earlier VSR (Voltage Sensitive Relay) Isolator is switched by the voltage rising after start-up. Constant charge to the auxiliary battery. The BC to DC Isolator will accept any input voltage and always outputs 14.1 volts. So, the voltage output varies constantly, sometimes as low as 7 volts. In this era vehicle, the ECU is looking to achieve less emissions, and one way it can do this is by reducing the drag in the alternator. The Variable Output Alternator requires a DC to DC Charger/Isolator to be used when fitting dual batteries. Late model 4×4 vehicles have either Temperature Sensitive Alternators or more commonly the new Variable Output Alternators.

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Battery isolator relay ac delco