CHARGING A 200 AMP BATTERY

2003 Nissan Altima

Tiny

PSSSZZT

October, 13, 2013 AT 3:34 PM

I WANT TO USE A POWER INVERTER DURING POWER OUTTAGES.
CAN I USE MY CAR TO CHARGE A 200 AMP BATTERY WITHOUT HURTING THE CAR?
CAN I KEEP THE EXISTING BATTERY IN PLACE AND PARRELLEL THE BIG BATTERY TO IT?
WAHT GAUGE WIRE SHOULD I USE TO CONNECT THE BATTERIES?
ARE ALLIGATOR CLIPS GOOD ENOUGH? IF NOT, WHAT DO I ASK FOR IF I CAN NOT USE ALLIGATOR CLIPS?

FOUND 190 RELATED QUESTIONS

4 Answers

Tiny

saturntech9

October, 13, 2013 AT 4:05 PM

I would never use your car as a battery charger like that. Go buy a battery charger harbor freight has some cheap ones. They also have cuppons for 20 percent off sometimes. You can damage your car trying to charge batteries with your car.

Tiny

PSSSZZT

October, 14, 2013 AT 6:06 AM

The idea is to run my refrigerator off the battery/inverter during storms so a battery charger would not do? Our outtages with a small hurricane last about 3 days. : (
can you explain why it would hurt the car?
Would the big battery draw too much and ruin the alternator?
Drain my existing battery?
Is there a safe "big battery that I can use with the car?
I need at least 100 amps to run my refrigerator.

Tiny

saturntech9

October, 14, 2013 AT 7:59 AM

The reason I say it should not be done is because your alternator in your car is designed to keep your battery in your car charged while the engine is running an help maintain the batteries charge while using the ac lights etc on the car. Its not made to charge a aux battery in addition to the one in your car or charge that battery. You could damage your alternator or even the computer in your spiking the computer with unstable voltages. The car is not designed to run dual batteries or act as a temporary battery charger to help maintain a emergency battery to run your refrigerator. So I am not going to tell you to doing something that you could damage your car. Get a generator that runs on gasoline or propane or even natural gas they have them. As long as you have a place to run it outdoors. Your best would be to talk to place that specialized in that kind of things.I am sure you them by you if you loose power for three days.I don't know of any battery that can run a refrigerator for three days without charge. That's why I say talk to them.

Tiny

saturntech9

October, 14, 2013 AT 8:30 AM

The reason I suggested the battery charger I thought you were suggesting the car to charge the aux battery after a storm or to maintain it. Not run the power invertor off of it.

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