Question about 2003 Ford Escort

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Car alternator to use as a battery charger only

Hi i am tryig to make a battery charger with a car alternator can this be done alan

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Thanks for that the power source will be a 2.5 hp honda engine alternator ? as i need to charge at about 40 amp its the regulator, i need to know, i know u can get one that keeps the batterys in good order but i dont know the name of it. i live where there is no mains electricty so i have to make my own, bulk of power comes from solar but i still need a stand by source of charging as a battery charger needs 230v supply the generator needed uses alot of fuel where a small engine will use a lot less

Posted on Oct 20, 2008

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It would be a very complicated way of charging a battery . Apart from having to have a power source to spin the alternaftor around you will also need a voltage control system (regulator) or else you will cook the battery. Unless you really know what you are doing i wouldn't recommend it

Surely it would be cheaper to get a regular battery charger.

Posted on Oct 19, 2008


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1 Answer

P00A B/1 Com1 ; p00P B/1 Com2

code p0045 refers to turbo/super charger boost control solenoid---circuit open causes ==wiring--boost control solenoid
p0046 refers to turbo/ super charger boost control solenoid--circuit range/ performance===causes ---wiring---boost control solenoid ---mechanical fault.
code refers to system voltage --low===causes wiring---poor connection---battery---alternator
it also refers to ECM power relay control--circuit open===causes -wiring --- ECM relay.
looks like 2 boost solenoids and I would ensure that the battery posts and terminals are shiny clean and tight. have a load test done on the battery to check for bad cell and check the alternator drive belt for condition and tension . Have an out put test done by an accredited auto electrician on the alternator

Dec 31, 2013 | 2008 Dodge Avenger

1 Answer

I am having issues charging my battery. I had a full charged battery on the car, drove it for a while and they electronics started to fail. I stopped the car to check if theres any issues, i thought a

I would be having another test done on the alternator by an auto electrician as I suspect that you have a faulty rectifier in the alternator. This is using ac current to charge the battery but with ac current as much goes in same amount comes back out. I would also have a load test done on the battery as if a multimeter was used to check the battery voltage that will not detect a bad cell

Dec 10, 2013 | 2006 Dodge Charger SRT-8

1 Answer

1994 LeBaron battery and alternator good but will not charge

Check for power on the large wire at the alternator. this can be done with the engine off. If there is not battery voltage at that wire at the alternator than there is an open circuit beaten the alternator and the batty. If I remember correctly there are fusible links somewhere in that circuit. Either way you'll have to start digging in to see where the problem is on that wire.

Jun 16, 2013 | 1994 Chrysler LeBaron

1 Answer

Car wont stay running after battery change

Was the car acting the same way before the battery change? Turn on the lights to see if the battery is charged--they should run for ten minutes or so without dimming. If not, charge the battery with an external charger--several hours with a high current charger, overnight with a low current charger. If charging the battery fixes the problem, then measure the battery voltage at the posts with the engine running--you should read 13.5 volts or a little more. If you read 12.6 volts or less, the alternator is likely in trouble. Take the car to AutoZone or similar business for a free check of the charging system. Hope this helps, but if doesn't, check back with us and include any additional symptoms noted plus what you have done to rectify things.

Oct 10, 2010 | 2006 Volkswagen Jetta

1 Answer

My car only will star with a bost and it turns of if u take the boster of

I assume the booster you refer to is a battery charger. If it starts and runs with the charger on but quits when the battery charger is removed, your charging system is not working (alternator). In most cases the alternator will supply enough voltage to keep the cars electrical system functioning even with a bad battery. Sounds like you have both a bad battery and a bad alternator.

Nov 16, 2009 | 1990 Nissan 300ZX

1 Answer

325ci wouldn't turn on so I got a jump and then when I turn it of

A working alternator can try to charge a bad battery but won't. Have the battery and charging system checked with a machine. Also note: your alternator is not designed to charge a battery. It is made to maintain the state of charge present in the battery. If the battery has been drained, then jumped, the alternator can put a surface charge there but will never fully charge the battery...This is only done with an external battery charger. Not doing this will over-work the alternator and shorten battery life!

Jul 30, 2009 | 2003 BMW 325

2 Answers

Dead battery on tahoe 2005 - now no power to ignition

provided you disconnected the battery before you charged it, its probably just a new battery you need, but if you did not diconnect it you have probably done damage to the starter motor and maybe the alternator and god knows what else

Jun 13, 2009 | 2004 Chevrolet Tahoe

2 Answers

1995 Nissan 240sx will not keep running.


you need to replace your battery.since the alternator is supposed t o charge the battery. y dont you start your vehicle, have it run for 1 hour or go on an hours drive, come back home, turn it off,after five minutes start the vehicle..see if it starts.if it does not, that means your battery is dead.

hope this helps
kind reagards

Mar 10, 2009 | 1995 Nissan 240SX

1 Answer

Car will not jump start

Check battery voltage. If volts are very low, put on charger. In many cases, you can't jump through a really dead battery... not enough voltage gets through to computer etc to make systems operate.
Battery may be used up... if it will not take a charge, replace it and check charging system before driving. PS: use a charger to charge battery. If it is very low, you candamage charging system in other vehicle. Also,,, You cleaned terminals already RIGHT???

Dec 16, 2008 | Mazda MX-6 Cars & Trucks

1 Answer

Ticking noise when trying to start

charge the battery if it take a charge and holds it make suer there are no interior lights left on,if not ,make sure the terminals are tight if all is good then replace the battery

Dec 10, 2008 | 1989 Pontiac Firebird

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