Why can’t I just use a regular battery for a deep cycle? It also has ratings for a starting motor in the form of cold cranking amps (CCA) or marine cranking amps (MCA). A dual purpose/deep cycle battery operates at a low amp level to run electrical components, but also has the cranking amps to start an engine.Ī dual purpose/deep cycle battery does have an AH rating which should help you determine if it will suit your needs as a deep cycle battery. This leads us to the next question: What is a dual purpose/deep cycle battery?ĭual purpose batteries have the capabilities of performing two important battery functions.
The AH is listed but the time span is not in these specifications. The last two listings provided were actually taken from a dual purpose/ deep cycle battery. We have provided some more confusing listings below. If the listing doesn’t specify, make sure to investigate further. Remember that the AH number is the amps multiplied by the 20 hour rate. The actual amp hours rating will likely be listed in the following format: When looking at amp hours, the listing should specify the span of hours used in the rating. The most common span of time for amp hour ratings is 20 hours. While this may seem simple, it is important to know that the amp output could be measured over five hours, 20 hours etc. How are amp hours calculated?Īmp hours are calculated by multiplying the amp output of a battery by an amount of time. While other factors exist in choosing a deep cycle battery, this one helps you evaluate a battery’s performance for your needs. This rating is specifically used on deep cycle batteries. This information can be especially useful if you want to get a battery that will put out a specific number of amps to run a trolling motor or other auxiliary equipment like on an RV. What are amp hours on a deep cycle battery?Īmp hours refer to how many amps a battery will put out over a specified amount of hours.
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