Review (4/5): Best toothbrush I've ever owned!
I should have bought one of these years ago. It really does give you a dentist clean on your teeth. I received it yesterday and put it on the charger. I noticed that it uses Nickel Metal Hydride batteries. They need proper care to last and get maximum capacity. This is mentioned no where in the instructions. Thankfully I am familiar with proper care and charging of batteries. Anyway, these batteries are better than NiCads, which had an almost instant memory effect. Memory in a battery is when you don't discharge it completely and then recharge it. The next time it will stop working at the point it was charged up. Nickel Metal Hydride batteries can develop a memory, but it takes many times for it to happen. Still, to get the fullest use of them, you should discharge them completely before recharging them. Also, a complete charge before using to stabilize the battery. Putting the toothbrush on the charger after each use will dramatically shorten the life of the battery. Only charge it once it is dead. It would be better if they were to move to Lithium Polymer batteries like laptops and cellphone use. The have no memory effect, only a finite number of charge cycles before the battery starts to quickly degrade. If the battery is not discharged past 60% it won't use up a charge cycle. So with Lithium Polymer batteries it is not only OK, it is desirable to put them on charge after each use. I expect to get a long useful life out of my unit. Anyway, I think that most of the people reporting short battery life either had the previous revision with NiCad batteries or are not charging/discharging the batteries properly or both. [[ASIN:B000050FDE Oral-B Professional Care 1000 Power Toothbrush]]
Anyway, I used the toothbrush before going to bed and it was the cleanest my teeth ever felt outside of the dentist. They still felt clean when I woke up in the morning. I did learn the hard way not to hit the power button until the brush head was in my mouth. It flung the toothpaste everywhere and made a mess. I tried following the quadrant thing, but ended up using a pattern of my own for the two minute clean cycle. The pressure sensor works quite well, it only activated a couple of times on me.