Starting or "Cranking" Batteries
This type of RV battery is designed with several thin plates,
maximizing the amount of surface area exposed to the electrolyte
solution. This design allows the battery to give up a large amount
of power in a short period of time and also allows it to be recharged
rapidly at a heavy rate.
15 to 30 deep cycles before it needs replacing.
"Cranking" a large V-8 engine requires this kind of power.
It is, however, a very poor choice when used as a 'house' or 'domestic'
battery as it can only withstand 15 to 30 deep cycles before it
True Deep Cycle Battery
These batteries are designed with fewer and thicker
plates than their Cranking counterparts. This
battery design allows a small amount of power to be used over a long period
of time and requires a slow to moderate recharge rate.
These are the batteries to be used in 'house' or 'domestic' applications
as they can withstand 700 to 800 deep cycles (or more depending on size
and type) before they need replacing.
RV/Marine "Deep Cycle" Batteries
These batteries are basically a 'hybrid' between a Cranking battery
and a True Deep Cycle battery. They were originally designed for the marine
industry where there was only one battery used for both cranking the engine
and for running the lights and electronics when the boat was at anchor.
Consequently, a little of each type of battery was combined to meet that
need. This type of battery can withstand around 300 to 400 deep cycles before
they need replacing. They are adequate as 'house' or 'domestic' batteries
but are not nearly as good or long lived as True Deep Cycle types. Modern
motorhomes have seperate battery banks now, one for 'cranking' and one for
'domestic' use, making this battery nealy obsolete.
What is a Battery Deep Cycle?
Deep cycling your battery is when you start out with a fully charged battery,
use 80% of its rated capacity, and then fully recharge it. Depending on
the type, all batteries have a certain amount of deep cycles they can withstand
before they will need to be replaced.
Other popular types of battery include guage 2 rv batteries and the american
hunter feeder rv battery.