As with most any of these types of after market repair manuals, they are limited on the amount of information they have. However, it is right on par with others from Clymer and Chiltons. For the $20 or so that you pay for the manual, you still get a lot of information you didn't have before. Don't expect too much and you won't be disappointed.
No where in this book does it say what the specs are for the battery. Even the schematic diagram leaves a few things out. Some things are pretty general, other things are okay. I've seen better service manuals but overall its okay.