Review (5/5): Works Great, Four Years Now!
My finance owns the same toothbrush in the rechargeable model, but I opted for this battery-operated unit. The brushes are, I believe, different, so consider that if you're buying a second Sonicare for travel.
I read the reviews here on Amazon and as a result I applied a little petroleum jelly to the rubber seal on the door of the battery compartment. When I use the toothbrush I lay it on its side afterward or flick the brush several times with my finger before setting it upright. It's been some years now and it works perfectly. Batteries last a long time and are inexpensive to replace. The toothbrush keeps my teeth really clean.