To keep this short for now, the basic differences are cost - lead acid flooded deep cycle batteries are typically the cheapest but have drawbacks such as:
They may require maintenance, can be mounted upright only and can not be used in tight spaces, for example, caravans.
Your gel and AGM deep cycle batteries are similarly priced, AGM slightly cheaper and also share another similar quality in that the electrolyte is absorbed or suspended, making them have the ability to be mounted, not just upright. Being spill proof and with VRLA, these batteries are better suited for caravans or cars such as the Audi Q7 with the battery inside the vehicle.
Lithium deep cycle batteries are still expensive, however, the stand out feature is the ability to sit unused for months with no to minimal discharge.
The batteries mentioned above also do better or worse in certain environments such as cold, hot "under bonnet" or harsh vibration. Get in touch to discuss your battery requirements.
Wide Bay Batteries carry a full range of deep cycle batteries which we can deliver and/or fit anywhere in the Maryborough and Hervey Bay regions 7 days. We stock four types of deep cycle battery which suit all budgets and applications: