Wednesday, Apr 29, 2015 at 21:30
Sure they will.
The Ctek doesn't care what sort of battery the source voltage comes from.
The fact that the Aux is "deep cycle" doesn't matter. Deep cycle simply means the battery is designed to provide a relatively low current drain over a prolonged period of time. A deep cycle battery can be of common wet cell (flooded), calcium, or AGM construction.
It is common to connect an auxiliary battery of any type, be it a wet cell, calcium, or AGM type of battery to the primary starting battery which is usually a standard wet cell battery, but could be any other type suitable for providing high current over a relatively short period.
In any case, an isolator, or smart controller in the circuit between two batteries, will keep the batteries "electrically isolated" from each other, so the different construction of the primary and auxiliary batteries doesn't matter. The Ctek dc-dc charger simply takes a supply voltage, boosts the voltage if necessary to an optimum level, then applies this voltage to the remote battery, in a multi-stage process, to ensure optimum and complete charging.
The only time a battery "bank" should preferably consist of similar battery construction, age and capacity, is when they are paralleled together without any controller between them.
For instance, if the "remote" battery in the van was expanded into a "bank" of two or more batteries paralleled together, then those batteries should be of the same construction, size (capacity) and age, to get the best performance out of them.
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