By November 7, 2007 0 Comments Read More →

How to Determine Alternator Amps


I have an Isuzu Rodeo that has a bad alternator. I’m being asked 60 amp or 70 amp. How can I tell which one it is?

Thank you

Hey there,

There is usually a sticker/decal or stamping on the alternator case itself that will have the amperage and casting number. If there is not a sticker, clean the case real good and rub some chalk on it so the indented stamping will show up.


Austin Davis

About the Author:

Austin Davis, consumer car repair advocate. "Hi there! I love to help people solve their car repair problems and I hope my site was helpful to you today. Thank you for stopping by."