The majority of vehicles will use a RedTop Optima battery with a strong 5 second starting burst for its primary function of starting a vehicles motor. Immediately after ignition the vehicles alternator will constantly monitor how much charge remains in the RedTop battery and whether or not to provide top up battery recharging power.
Examples of some vehicles which would use this particular battery would be heavy equipment, diesel powered, hot rods, RV and automotive.But what if my vehicle does not have an alternator or requires the use of higher electrical loads?
In this case it would be best to then use a YellowTop Optima battery as it will have a higher discharge cycle compared to the RedTop batteries. Thus making it suitable for drag/racing cars, electric autos, snowploughs, as well as many other aftermarket vehicle accessories such as GPS, chargers, fridges, winches, hydraulics, inverter systems and specialized audio/video installations which require greater than 250 watts more power above that of the vehicles original equipment spec.
I heard that the BlueTop Optima battery should be used for deep cycling applications. This is true for the light greyed BlueTop cases, however there is a distinct difference between the YellowTop and BlueTop deep cycle batteries in that the BlueTop deep cycle batteries have 2 sets of posts - automotive (SAE) and threaded, whilst the YellowTop batteries excluding model D31T only have SAE posts.
An added feature of the dual purpose light greyed BlueTop batteries is that they also have a very high cranking power which makes them suitable for starting applications as well. Examples of where this type of Optima battery is used are with trolling motors and marine/RV applications where excessive electrical energy is required.
It should be noted that if a marine/RV application requires only the use of the starting feature of a BlueTop battery then it would be best to use a BlueTop battery with a dark grey case as it has been specifically manufactured for this purpose alone.
Forget about all the primary colored Optima battery top details, just give me the facts?
Use dark gray casing batteries for starting applications only and light gray cased deep cycle batteries for dual purpose operations.
It is important to remember that a deep cycle application will usually result in discharging a battery between 60% and 70% of its capacity whereas a SLI (starting / lighting / ignition) battery is designed to push out maximum power for a short period discharging between 1% and 3%. It is therefore not advisable to use an SLI battery for deep cycling applications as its battery life will be shortened depending on how regularly it is deep cycled.
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