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Can you charge a battery with an alternator?

Can you charge a battery with an alternator?

The alternator in your car is what charges your battery. The battery has the responsibility of providing the power to start your car. But when your car is running, your alternator is fueling the battery for the next start. As we said before, the alternator will recharge the battery while your car is in motion.

Can you charge a deep cycle battery with a car alternator?

Yes it can but it is better to bring the engine speed up to 1500 rpm or so. The alternator will be able to charge the battery at a higher rate because it is turning faster. At idle speed 500–700 rpm the alternator wont produce much charging capacity.

How long does it take to recharge a battery with the alternator?

Generally, if you can keep your engine RPM up, your alternator will charge your battery at a faster rate. If you are driving on a motorway, you should be able to charge your car battery in 30 minutes. If you are driving in the city, it may take an hour or more.

Can a car alternator charge a lithium ion battery?

Can I recharge my lithium battery from my vehicle alternator? – Yes, but not necessarily to full charge, due to the fact that most Alternators are adjusted for the lower voltage requirements of the vehicle Lead/Acid Battery (approximately 13.9-Volts). Lithium Batteries require 14.4 to 14.6-Volts to fully charge.

Should I disconnect car battery if alternator is bad?

If you’re tempted to test an alternator by disconnecting the negative battery cable, don’t do it. A good alternator may indeed keep the engine running without the negative cable, but this was never a good test. The second you disconnect the battery, the voltage regulator pegs the alternator to put out maximum power.

What tells the alternator to charge the battery?

When voltage drops below 13.5 volts, the regulator will apply current to the field and the alternator will start charging. When the voltage exceeds 14.5 volts, the regulator will stop supplying voltage to the field and the alternator will stop charging. This is how voltage output from the alternator is regulated.

Do you need a special charger for 12V lithium batteries?

You can use a lead acid charger on a lithium battery if you want, HOWEVER, you must NOT use a lead-acid charger if it has an automatic “equalisation mode” which cannot be permanently turned off.

What size alternator do I need for 3000 watt amp?

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.

How do you charge a NIMH car battery?

Plug the battery’s capacity into the equation and multiply it by 1.2, or 120%, since NiMH batteries require more power to charge than what they output. Then divide that answer by the charger’s C-rate to find out how long it will take for your battery to fully charge.

What’s the difference between NIMH and alkaline batteries?

The main difference is that an alkaline battery starts at 1.5 volts and gradually drops to less than 1.0 volts. NiMH batteries stay at about 1.2 volts for almost 80% of their discharge cycle. Once alkaline batteries discharge to 50% capacity, it will be delivering a lower voltage than a NiMH battery.

How often should you cycle a NiMH battery?

In fact fully cycling the battery when you first start to use it will help form the battery internally. We recommend you fully cycle them at least three to five times before they reach peak performance and capacity. After that feel free to recharge whenever you see fit, as the these batteries do not have memory effect.

Can a bad car battery cause an alternator to not charge?

In theory a car can run only with the alternator charge, but this can cause heavy voltage spikes and other strange symptoms so this means that a bad car battery can cause an alternator to not charge also. Cars are increasingly coming with modern electronics.