A friend of mine has a Mogul and he is having this issue as well on WM6. Having a Hermes on WM5 and WM6, this has always been the case. Shogunmark and Faria discussed this in a thread at length and tried to port the Wizard driver (which would decrease in incriments of 1%) but to no avail. Its a shame such a good device has such a tedious shortcoming.
We're making a big assumption that pocketpc's that report in 1% increments are truly that accurate. I'm sure they're not. It's also fairly likely that reporting in 10% increments increases battery life not just per charge but also over the life of the battery. This is a pretty good tradeoff, in my opinion. I'd rather have a battery that lasts 3 years than have one that lasts one year, wouldn't you?
This is also one of the more nitpickier of the 'complaints' on the Hermes, even if all other things are equal.
Why? I guess it is quite normal (i.e. not magical) to expect one of the official roms to have it fixed. And I didn't mean to bump the thread. I got my 8525 only a few days ago and I was reading through the posts in the forum and I saw this one and I was surprised that the first post is more than a year old and no solution was found. I thought it was weird so I wanted to leave a post.