Battery charging question.

OK, so I have this 1953 M38A1 with the 24 volt system. There are 2 batteries hooked up in series to make the 24 volts. I'm wondering if I use a standard 12 volt trickle charger across both batteries to maintain the charge during periods of non-use if it will do the job, or do I have to have each separate battery hooked up to it's own charger.:? Also, when I get the old Willys fired up for the first time in about 4 months, will my local auto parts store be able to check the charging system with the same equipment they use to check most 12 volt systems?

The reason I ask is that after sitting for 4 months, one of my batteries was completely dead and the other was half charged. I want to make sure the generator is actually charging like it's supposed to. BTW, I do have a battery cutoff switch and it was turned to OFF while the Jeep sat. The batteries were new last summer. Any input is appreciated as usual! Thanks!

 

Easiest way to check the generator is to start the engine and run at maybe....1500 rpm and check across the battery for a voltage reading. The generator should be producing atleast 25-26.5 volts. Don't forget to check the regulator operation too. Based on what you described, I would take the batteries out and trickle charge them and then check electrolite level in each. This will identify a bad cell. Then load test them both. Once you determine they are good, and you know the generator is charging, I would make sure that nothing is hooked to the battery that is not going through the battery disconnect switch.

Good luck.....

 

As far as charging batteries it is a good idea, especially in your case to disconnect them from the vehicle. And I also Popoff The covers to make sure I am not boiling my battery. Unfortunately, if they are completely dead. They may not take a charge. as far as checking the generator system. I don't know anything about that. I do know that with an alternator system. If you disconnect the battery while the engine is running, and it continues to run your alternator is good. But as far as a generator once again I have no idea.
Doug/Tucson

 

to charge both batteries hook them to the charger in parallel. that should charge both.