The heads are impossible to get off for replacement. I found a video that recommended using the time of a fork to depress the tab to remove. I am now sitting here with a bloody finger as I stabbed myself with the fork and will likely need a tetanus shot.

I bought this a few weeks ago, I attempted to change battery, twist off replace battery and twist back together. Simple, but after installation the neg end of battery will not make contact with probe. The whole assembly has shifted and make reinstalling the new battery useless and the tooth brush JUNK. DO NOT BUY THIS CRAPPY TOOTH BRUSH.

My family has been using these battery powered toothbrushes for years. They work great and last quite a while. Easy battery replacement keeps them going strong. On the down side, the clear plastic covers that used to be included with the toothbrush aren't included anymore. This is a negative for the product as these keep hair and other nasty stuff off the brush end of the toothbrush while not being used. You should really reconsider including these with the toothbrushes and even as a replacement (maybe include 1 with each set of replacement brush heads).

Great little toothbrush. I got an Oral b deep clean to replace another brand that I had for many years. I bought a new replacement and found the new design to be defective which drove me to Oral b. I have had good results with the Oral b and I will be sticking with it. Very happy.

I was disappointed that the new L7811 does not have a cover like the last time. I will not be buying them again unless you get covers back. Also disappointed that it says they are made in Mexico instead of US. I need to start looking better at products.

I have been using this toothbrush for years; it clean very well and the battery lasts quite a while. However, at some point the design changed for the way the battery sits inside the brush, and when I try to change the battery, it's impossible not to bend the lower contact permanently, which means instead of replacing batteries and toothbrush heads, I have to replace the entire toothbrush. I feel that this is a waste of both money and resources. I hope the battery compartment can be changed to avoid this!

I’ve been using this brush for awhile, probably 8-10 years. I’m on my 2nd one cuz as another user mentioned, the head became a little difficult to remove, which I attributed to slight amount of residue from a small amount of part of the toothpaste that will remain under the head after rinsing it off, which will build up/gather slightly enough to fill the gaps of the guides that the head slides into then locks. I did however figure out that when I remove the old head I use the brush to clean away all the dusty residue that has gathered in that area & works like a charm. The other thing I have done is start to use rechargable batteries in the toothbrush, since I do use rechargable AA & AAA batteries in other things like a TV remote, flashlights, etc...

I have been using this toothbrush for several years - I love it. It's one of the best battery powered toothbrushes I've ever found and I've tried a number of electric toothbrushes, including those that go on the charging base - those brush heads don't do what this brush does. Now the store where I was buying them doesn't carry them anymore and it appears as if it's not available in any stores in the Los Angeles area. I went into panic-mode the other night, but I guess I can order them online, but will have to pay shipping. :( Phooey!

This is a really good toothbrush but the issue I have is when I needed to change the batteries, it was not an easy task and one I was able to get them changed, the toothbrush would not work once I put the cap back on but if I remove the cap and touch the batteries it would work. So this task needs to be easier and work once the batteries are changed

This is the best toothbrush of any electric or battery operated toothbrush I have ever used. It has a large head which is so much better than the smaller toothbrush heads because it allows you to reach more of your mouth at once and no matter which way you are going in your mouth you can get more than one small section at a time.