Large Scale Central

Which Batteries?

Electronics Power and Sound
#1

What battery sizes should I be using for installation in locos/tender/trailcars?

I see the following sizes advertised:

AA
C
sub C
and so on.

I know the voltages are the same and the amperage ratings are different. But assuming I get a battery pack with sufficient amperage for a reasonable run time, which size is best. I read something about charge and discharge rate differences between the sizes.

Knowing what load and usage the batteries get in our train use, what do you experts recommend?

I have mostly TEs but have one RCS unit also.

Thanks

Andre’

#2

By no means an expert, but I have done quite a few conversions so here goes. You should find out the current draw of the locomotive to help determine the mA rating. If your engine draws 1 amp then a battery rated a 1000mA should last about 1 hour. Use the pack with the largest mA rating that will fit. By fit I mean: size for application,cost,weight, and voltage and mA rating. For size I mainly use 2 of the sub C 7.2v racing style packs in trailing cars and tenders. It also is a fit for my wallet as these are mass produced and cost less. As for weight I see no use carrying around a 10 amp battery if you will be running for maybe 2hrs and drawing only 1 amp. You’ll just wear out the journels. Many find 14.4 volts is suitable for small engines and diesels. Larger engines take can more volts. For me it is more cost effective to fit 2 7.2v sub c 2200mA batteries in most engines, as I get the best deals on these. What ever you decide make sure you have an appropriate charger.

#3

Andre,
You might want to read this as well.

http://www.largescalecentral.com/LSCForums/viewtopic.php?id=6660

#4

Thanks Tony…that’s what I needed!

Andre’