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24volt Batteries
- Thread starter MikeKennedy
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2x 27F6 is what you want from Napa.
~John
~John
John is probably right...but if you can shoot a pic of the battery on the other side and post it, that would take away any doubts.
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The batteries will come in R or L designations for post orientation of in C or F designations for Chevy or Ford (which really translates to right or left posts). Napa uses the C and F designation.
BJ74s, HZJ73s use C batteries, HJ6* series take one of each, but it's best to run two F batteries and move the cables around on the right side. BJ6* series need a little battery cable work on the right side to make things work properly when using two F batteries.
~John
BJ74s, HZJ73s use C batteries, HJ6* series take one of each, but it's best to run two F batteries and move the cables around on the right side. BJ6* series need a little battery cable work on the right side to make things work properly when using two F batteries.
~John
- Thread starter
- #25
nope only need 2 - 27F batteries.
so they line up like this + - ________+ -
so they line up like this + - ________+ -
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- #26
Mike: Of course! I should have just drawn it out...it's been an aweful long week, and I'm glad it's over. Hopefully the brain cells recover a little bit after a restful long weekend. 
0nly Optimas for me.
I bought a pair of Optima Red tops in May 1998, and just replaced them in August 2010. In fact, only one of them was bad, but I replaced them as a set anyway. I did make new hold-downs to compensate for the smaller 34R size, but they are better than the original hold-downs. I am make a point of rotating batteries each year to equalize their long-term life expectancy.
That would be over 12 years on one pair of Optima batteries. That was through brutal cold of Edmonton winters and heat of the southern USA. I would never use anything else!
I bought a pair of Optima Red tops in May 1998, and just replaced them in August 2010. In fact, only one of them was bad, but I replaced them as a set anyway. I did make new hold-downs to compensate for the smaller 34R size, but they are better than the original hold-downs. I am make a point of rotating batteries each year to equalize their long-term life expectancy.
That would be over 12 years on one pair of Optima batteries. That was through brutal cold of Edmonton winters and heat of the southern USA. I would never use anything else!
0nly Optimas for me.
I bought a pair of Optima Red tops in May 1998, and just replaced them in August 2010. In fact, only one of them was bad, but I replaced them as a set anyway. I did make new hold-downs to compensate for the smaller 34R size, but they are better than the original hold-downs. I also make a point of rotating batteries each year to equalize their long-term life expectancy.
That would be over 12 years on one pair of Optima batteries. That was through brutal cold of Edmonton winters and 100F summer heat of the southern USA. I would never use anything else!
I bought a pair of Optima Red tops in May 1998, and just replaced them in August 2010. In fact, only one of them was bad, but I replaced them as a set anyway. I did make new hold-downs to compensate for the smaller 34R size, but they are better than the original hold-downs. I also make a point of rotating batteries each year to equalize their long-term life expectancy.
That would be over 12 years on one pair of Optima batteries. That was through brutal cold of Edmonton winters and 100F summer heat of the southern USA. I would never use anything else!
You seem to be the exception, rather than the rule. So it makes me wonder what you are doing different that seems to give you exceptional longevity with your Optimas in a 24V application?
I'd place on my bet on rotating them batteries, also helps alot if there isnt any faulty wiring and stuff like that which could eat batteries empty...
Dave 2000
Not all Land Rovers are useless!
Might as well bring this on over here,
https://forum.ih8mud.com/80-series-tech/410360-optima-red-yellow.html
regards
Dave
https://forum.ih8mud.com/80-series-tech/410360-optima-red-yellow.html
regards
Dave
Yeah...but GregB is pretty anal about his Land Cruisers...he's not exactly the kind of guy who would have faulty wiring. He also rotated his Red Tops regularly...and they still died early. He also had a Solar COnverter load balancer connected.
Just curious to see if there's a different method that may be making a huge difference in those who have had good experiences with the Optimas in a 24V setting...
Well, I suspect the only thing I am doing differently is rotating them once per year. I should say that I have a 12vdc stereo/CD changer player directly connected to the passenger battery, so that sets up a known unbalance. Bad idea I know, but I did it anyway over 17 years ago. That stereo was my original reason to rotate annually.
Let me note that with 3 pervious pairs of batteries, I could never get more than 3-4 years total, despite the rotation routine.
Let me note that with 3 pervious pairs of batteries, I could never get more than 3-4 years total, despite the rotation routine.
I too have been running Optimas. First 2 red tops that lasted just over ten years, and only one was bad. So I went to two new Yellow tops because the people at Total battery told me that my taking the batteries out for the winter ( I didn't drive the cruiser in the winter as I live in Ontario and they like a lot of salt on their roads) was very bad for the Red Tops. They like to be used. the Yellow Tops are only three years old but I've had no problems I do rotate they once a year and have I Solar Converter hooked up to the battiers for the stereo and 12 volt plug in for charging the other toys, phone, nav, ... Don't know what you guy are talking about. Excides are junk though. Couldn't get them to hold a charge.
Hmm...interesting.
I'm glad you have had good experience with Optima's in a 24V configured truck.
I have not...three times, in 24V trucks. In cleanly wired 24V trucks. And I know a good number of others who have not as well, in 24V trucks. They won't get my money again, in 24V trucks. I wonder if some of this is where they were manufactured, change in material, or other changes done at the factory which are behind the scenes. My understanding is the earlier ones were not as problematic.
12V trucks...fill your boots.
gb
I have not...three times, in 24V trucks. In cleanly wired 24V trucks. And I know a good number of others who have not as well, in 24V trucks. They won't get my money again, in 24V trucks. I wonder if some of this is where they were manufactured, change in material, or other changes done at the factory which are behind the scenes. My understanding is the earlier ones were not as problematic.
12V trucks...fill your boots.
gb
I've got red tops in the HJ 61 I bought from Marko over 5 years ago. No problem.
Rotated them twice.
Wouldn't buy them again though. Too expensive, and not required for the application, really.
My guess would be that it has something to do with charging voltage. Low voltage kills AGMs and gel cells. This is a generalization that is found in the marine world.
Rotated them twice.Wouldn't buy them again though. Too expensive, and not required for the application, really.
My guess would be that it has something to do with charging voltage. Low voltage kills AGMs and gel cells. This is a generalization that is found in the marine world.
