Can an alternator charge a deep cycle battery?

Most vehicle alternators will never properly and fully charge up a Deep Cycle battery so invest in a good charger or a solar arrangement with a charge controller/regulator with at least a three stage charging control (many chargers are now 6 or 7 stage affairs).
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Will a high output alternator damage a deep cycle battery?

So high-output alternators will not harm your components or charging system, no matter how high you go with the amps.
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Can car alternator charge AGM deep cycle battery?

It will mostly mean the alternator charging system is not well equipped to charge or optimally work with AGM batteries. Using the alternator to charge your AGM battery may pose a serious risk to your battery. It may either undercharge or overcharge your battery.
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What amp should you charge a deep cycle battery?

What amp rate should you use for a deep cycle battery? It's best to use a charger that provides between 5 and 15 amps for a deep cycle battery, and this is exactly the range in which most deep cycle marine battery chargers come.
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Can I use a trickle charger on a deep cycle battery?

Many GEL, AGM and Calcium's are better than regular lead-acid batteries but even so you should charge them back up regularly, or better still use a trickle charger (or solar panel) to keep them in top condition and extend their life.
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Deep Cycle Battery Charging with your Alternator: The 3 Best Options explained [+ Wiring Diagram]



Will an alternator fully charge an AGM battery?

As I understand it, most vehicles' stock alternator / charging systems can't completely charge an AGM battery... they will only bring it to a certain state of charge. To charge it to 100% capacity, one needs to use an aftermarket battery charger that is sophisticated enough to do so.
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What happens if you charge an AGM battery with normal charger?

Both AGM and gel batteries are naturally more stable and have much lower discharge rate than flooded cell batteries. They also have different needs from flooded cell batteries, and a charger configured for flooded cell batteries may burn out VRLA batteries, and cause them to die.
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Why do AGM batteries need a special charger?

AGM batteries do require a "special charger" in that the charger must not charge in excess of 15.3 volts. Many less expensive chargers can and will over charge a battery delivering in excess of 17 volts. AGM batteries use a self closing valve to deal with expansion.
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How long does it take an alternator to charge a boat battery?

In most cases, a marine battery will take around 4-6 hours to charge. This will bring your battery from 0% charged to 80% charged. In addition, it depends on the type of charger that you're using. Some chargers are more efficient than others, which means that it's important to pick out a high-quality charger.
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Can I use a car alternator on my boat?

Yes, you got it right. There are several risks associated with this slight incompatibility. Firstly, the car alternator generates a lower output power. This power reduction might affect the proper function of the components of your boat.
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How big of an alternator do I need for 3000 watts?

3000 watt / 12V is equal to 250A. A 250A alternator is needed to keep up with it. Since your engine would have to work just as hard as any portable 3KW generator to keep up with the amplifier, you would need a large fuel tank.
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What size alternator do I need for 1000 watt amp?

If you've read this far and are starting to rethink 150's, hair tricks, and broken windshields, you can still enjoy considerable bass with a single high output alternator in your car or truck. As a general rule, you need about 100 amps of current for every 1000 watts of power generated.
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Are all AGM batteries deep cycle?

TYPES OF AGM BATTERIES

However, not all AGM batteries are deep cycle. While a popular choice for deep cycling, as an AGM battery has a depth of discharge (DoD) of 80% versus a standard flooded battery which has a DoD of 50%, it is also a popular choice for starter batteries.
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What amp should I charge my AGM battery?

Using the gel setting to charge an AGM battery will not fully charge and over time will actually damage your AGM battery. Lower is better - A low amp charger (1 to 10 amps) is always the best choice for charging any lead acid battery.
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Can you recharge a dead AGM battery?

You can save yourself a ton of money by trying to charge the dead battery with another AGM battery. Simply take a well-charged AGM and connect it parallel with the dead AGM battery on your charger. Use a set of jumper cables to connect the good battery to the bad one to give it a jump-start.
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Can you charge a gel battery with a car alternator?

Gel Cell Batteries must be recharged correctly or the battery will suffer premature failure. The battery charger being used to recharge the battery(s) must be designed or adjustable for Gel Cell Batteries. If you are using an alternator to recharge a true Gel Cell a special regulator must be installed.
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What is the main disadvantage of an AGM battery?

Cons for AGM Batteries

Manufacturing costs are higher, making the batteries more expensive. They are sensitive to overcharging and high voltages, and require full charging between uses, which can make them un-suitable for some applications where returning them to a full charge is difficult.
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How do I know if my battery is AGM?

In the case of AGM batteries, it's usually mentioned on the label. However, if you don't see AGM written anywhere on the label, you can look for the model number of the battery and check for its information online, or contact the manufacturer and ask for it.
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How long does it take to charge a 12v deep cycle battery?

A charger with 15 amps, for instance, will take about two hours to fully charge a battery at a 25-percent discharge value. Chargers with only 5 amps, however, will need a full six hours with the same battery.
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What happens if you overcharge a deep cycle battery?

Both overcharging and undercharging will have serious adverse effects on the lifespan of a deep cycle battery. In particular, you can seriously shorten the lifespan of a battery if it is used in a deep cycle application that it was not designed for.
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Can you overcharge a 12 volt deep cycle battery?

Can you overcharge a deep cycle battery? Yes, the deep cycle batteries can be overcharged. The amps that are used for charging these batteries decide whether the battery will be overcharged or not.
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