12v battery sizes

[JohnHudak]

While searching for some batteries to power my 1 1/2" EMD model 40 project, I came across this chart that lists the physical sizes of 12v automotive batteries.
I'd like to squeeze in the biggest battery I can, and was looking for something just like this...
John

http://www.rtpnet.org/~teaa/bcigroup.html

[Kevin_S]

John, one thing to think of is when you have to replace the batteries. A group 24,27,and 29 are very common sizes that can be found at most stores. Some of the other group sizes might have to be ordered or visit multiple shops to get all you need.
-Kevin S.

[srrl5]

Keep in mind for an electric locomotive you want Deep Cycle batteries not car batteries.

David

[Solar1953]

I have a Super Huskie that uses size 26R batteries. Unfortunately, these don't seem to be available in a deep cycle version, and I am forced to use automotive batteries in this size; however, they DO seem to hold up much better over the long term than I would have expected.

[Miserlou57]

A Model 40 project.... cool!

any pics?

[SteveM]

And you can get group 27 in deep cycle. It's a pretty good size battery.

Make sure it's a "deep cycle" and not "dual use". There are batteries that are sort of between automotive and deep cycle, You want a pure deep cycle (unless you have a pressing need to keep jump starting your car).

Steve

[JohnHudak]

A Model 40 project.... cool!

any pics?

I started this project about a year and a half ago, and I'm getting close to making a test run in a month or so... It has two 350 watt wheelchair motors connected to a common shaft. From there the RPM is reduced to a jackshaft under the chassis, and reduced again to each axle.. I'm using timing belts instead of chains.
It will have a 4QD controller and will operate at 24 volts..
Here's a pic taken about a year ago.. Not much different looking now as I was working on other projects. I still need to add the side skirts, fuel tanks, etc....
John

[PSeyfrit]

Boating stores ussually have Deep Cycle batteries, (have 3 8D Gell Cell batteries on my boat, 13 years old and still working)

[Dan_M]

I'd look for a deep cycle battery with the highest RC (Reserve Capacity) for a given size.

[JohnHudak]

Yep, deep cycle is the way I'm going, but I am limited as to what I can fit in the noses of the model 40...
That's why I needed to know the actual sizes of the batteries..
John

[David_T]

Try the actual battery manufacture's website. Just search for their names, Trojan, Empire etc.