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Marine Battery Charger Facts To Know

By Marshal Boyer

A marine battery charger, especially one for a boat, must be carefully selected. You must know the input voltage for your battery, the battery type, as well as the capacity prior to choosing and there are other factors to think of when actually charging as well. Picking the right kind of charger is the key to making sure that an individual battery has a long life.

It’s important to keep in mind that you will probably be using a marine battery charger in a different place than a car or other type of charger. Marine equipment such as boats are mostly on the ocean, not on the land, and as such you may run into situations where you must charge the battery while you are away from shore. Choosing a charger that can easily be transported on the boat and kept safely is a must.

Coming across a charger that will not over or undercharge is also important. Charging a battery too much is the biggest cause of battery death, with undercharging coming behind in a close second. Ideally you want a charger that will only have an output that is equal to 20 percent of the battery’s total Ah capacity. Anything less will effectively undercharge the battery, and anything more will result in overcharging it. For example, if your marine battery has 100 Ah, then you should scout for a marine battery charger that supplies 20 Adc.

If you have to buy a battery that does not give 20 percent of the total Ah capacity, then consider the times that will be needed for each charge. In example, if you charge a 100 Ah battery with a 10 Adc charger it will take just a bit over 6 hours. Similarly, if you charge a 200 Ah battery with a 20 Adc charger it will take the same amount of time. However, for a 200 Ah battery you would optimally need a 40 Adc battery charger, which should take not more than 3 and a half hours to reach full capacity. This logic fits for all battery sizes, though the times will change depending on battery size.

Using the right size of charger with your battery will ensure that it will last as long as possible. Marine batteries are not cheap, and a good charger than give your battery a second, third, or even fourth life for you to use. Take into account the size and rate of your battery before purchasing a charger, as you will regret purchasing the wrong model shortly after. A marine battery charger is something that needs to be seriously thought over before decided on, as they are all not only made differently, but they also come standard with different sizes and charge rates.

If you are having trouble deciding on the marine battery charger you need, visit my site and get more information. Picking out the right one is important, but it doesn’t need to be difficult.

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Article Citation
MLA Style Citation:
Boyer, Marshal "Marine Battery Charger Facts To Know." Marine Battery Charger Facts To Know. 24 Jul. 2010. 12 Sep 2014 <>.

APA Style Citation:
Boyer, M (2010, July 24). Marine Battery Charger Facts To Know. Retrieved September 12, 2014, from

Chicago Style Citation:
Boyer, Marshal "Marine Battery Charger Facts To Know"

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