First off you must have the same type batteries. Connect the positive post of the first battery to the positive post of the second battery. Then connect the negative post of the first battery to the negative post of the second battery. Now connect the positive post of the first battery to the positive connection on the vehicle. Then connect the negative post of the first battery to the negative cable of the vehicle. Click the link for a diagram.
Connect three 12 volt batteries in series and you will have 36 volts but will only have the amperage of one of the batteries.
It seems reasonable providing your purchased batteries with enough current capacity and connect them in series.
For Australian made deep cycle batteries, try the related links.
You just connect them in Parallel. Two 12 volt batteries connected in parallel will output 12 volts. Two connected in Series will output 24 volts. Just connect the negative terminal on the first battery to the negative on the second battery. Then connect the positive terminal on first battery to the positive on the second battery. Connect the cables to the second battery, positive to positive and negative to negative. Click the link for a diagram.
You equalize deep cycle batteries by charging with a higher than normal voltage for a short period of time. Consult the manufacturer for details.
Yes if they are connected in parallel but I would not recommend it. Just charge them one at a time.
Deep cycle means that the battery gets almost totally drained before recharging occurs. You'd find this on batteries connected to solar panels for instance that are used at night. These batteries differ from a motorcar battery as draining a car battery completely, damages the battery. Deep cycle batteries are designed to deal with this and are usually more expensive than car batteries.
a deep cycle battery i a battery that you can charge and discharge over and over without harming the cells in the battery unlike a normal battery . deep cycle batteries are normally used in boats
Assuming neither battery is used to start the engine, simply connect the positive (+) terminal of the first battery to the positive terminal of the second battery. Then connect the negative (-) terminal of the first battery to the negative terminal of the second battery. Connect the load circuit to the positive and negative terminals of one of the batteries as usual. You may want to charge the batteries separately before making the connection, since connecting a charged battery to a discharged battery will result in a very large current flowing from the charged battery to the discharged battery, possibly damaging the wiring or either battery.
Usually 12 volt deep cycle automotive batteries.
Most RV batteries are Deep Cycle type. Deep cycle batteries are lead-acid battery capable of being regularly discharged using most of its capacity in the process. Deep cycle batteries also have thicker plates inside the case. Normal car batteries will not discharge to the level or last as long as a deep cycle battery.As to how long it will last (lifespan) also depends on usage. Deep cycle batteries can be stored (fully charged) up to 12 months and only lose 25% of their capacity. Again depends on age of battery. Most RV's have a system where the deep cycle (RV) battery is constantly charged when the engine is running and most too will have a battery charge indicator on a control panel inside the RV itself.
For a deep cycle battery I would suggest going to www.secbattery.com. It has a great selection of deep cycles batteries, all at quite reasonable prices.