RE: Stylus battery holder.....
We solder them here. We use a different technique that does not damage the cell internally, thus it still gives good performance. It's REALLY easy to damage nimh and nicd cells with a soldering iron. We've killed quite a few.
The spring battery holders are ok, just clean them once in awhile.
The radio will work on 3 cell lipo so many people are adapting a 3 cell lipo into the radio battery holder.