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Re: Re: Re: Battery charger hookup
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Posted by Jon H on March 28, 2004 at 19:07:27 from (69.26.16.167):
In Reply to: Re: Re: Battery charger hookup posted by RAB on March 28, 2004 at 12:19:17:
Those old JD's with the center tapped 24V system are a challenge to charge batteries without danger of explosion or runaway. With the batteries mounted under the floor with tight clearences,the chance of sparks and explosion are greater if you try to attach the charger at the battery. It is better to attach the charger to the battery cables at the starter. The cable attached to the solenoid has a negative connection and the one connected to the stud on the starter side has a positive connection. If you are charging the batteries with a 24V charger,you connect the pos clamp to the starter stud and the neg clamp to the solenoid stud.
If you intend to charge the batteries seperatly with a 12V charger,you connect the neg clamp to the starter solenoid stud and connect the pos clamp to a good ground on the engine untill that battery is charged. To charge the other battery you connect the pos charger clamp to the starter side stud,and the neg clamp to a good ground on the engine untill the other battery is charged. If you are using a 12V charger,do not exceed 30 amps charge rate as the center tap wire will not take much more than that.
By connecting the charger at the starter you eliminate the danger of battery explosion,but then have the danger of shorting the starter trigger connection to the battery and causing the engine to crank up and run over you if the tractor is in gear. The world will be a better place when the last one of those 24V,battery destroying abominations is converted to 12V neg ground with an alternator.
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