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Brie 10-18-2015 06:07 PM

Bus Batteries?
Okay, so how I change them seems pretty self explanatory. Take out the bolt, slide batteries out, disconnect, and replace. What I can't figure out is what to replace them with. Right now there are two honking batteries from California in there. I can't remember what amp they are, going to have to check in the morning.

What do you guys have in your bus, especially those of you from climates that hit the below zero mark in winter? What do you put in them? Do you have no maintenance or do you fill your own batteries?

Hank's P-O-S 10-18-2015 06:43 PM

I have three batteries. Each battery is 900 cold cranking amps, so that's 2700 cca.
This is more than enough even if you will be starting routinely at -40.
These batteries are 5 years old and are a better house brand battery.
The bus started fine at -20 Celsius after sitting most of the winter in central canada.
They are the reuular add water batteries although I have never checked them.

charles_m 10-18-2015 07:40 PM

Most medium duty trucks will start handsomely with a single 8D size battery. Coaches and semis use 2. I have a dt466 and the single 8D i run spins it plenty fast for plenty long, down into the -10f temps

EastCoastCB 10-18-2015 09:25 PM

Two 31's here.

gbstewart 10-18-2015 09:38 PM


Originally Posted by EastCoastCB (Post 126723)
Two 31's here.

me too

opus 10-18-2015 09:40 PM

I have 2-8D's.

Hank's P-O-S 10-18-2015 09:47 PM

Battery size really does not matter. I have seen both 8-D batteries and regular fulsize car batteries with the same ratting and I have never seen 8-D's go up to 2700 cca. Really you could go up to 3600 cca worth of batteries in a single battery box. I did see some "comercial" regular size batteries that were 1200 cca each at the local farm supply. If you can afford beter brands of batteries I would recommend buying interstate or deca batteries, they are some of the best.

Brie 10-18-2015 09:56 PM

Good to know. I have a fairly large (though not infinite) budget for this project and I want to make sure she can survive wintering in Maine while still keeping the cooling capability of a California bus for the summer trips. Between the oil jelling and the batteries kicking it, that's proving to be more complicated than I expected. Not to mention the cost of having pressurized antifreeze changed out :facepalm:

Dragonpop 10-18-2015 10:07 PM

Mine came with two 8D batteries NAPA brand, that were 8 years old when they died
so I went back with two more 8D batteries NAPA brand 1300 amp hour rating. Truck
mechanic 2 doors down said I may need all I can get for cranking amps.

charles_m 10-19-2015 12:33 AM

I think you meant 1300 Cranking Amps dragonpop...

how big is your motor, brie? that will make a difference.

also, what are you talking about with oil jelling and changing pressurized antifreeze? Never heard of either of those!

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