somehow it seems cheating to use br here, but I guess that works.  Do you have these vertically aligned to the bottom so they're the right distance above the bottom edge in both single line and two-line variants? Actually, I suppose the single line notifications have battery icons above, so maybe they're all the same height.

I don't like the way you do localization in advance like this, and I worry about concatenating separately localized strings, but it will probably be fine.