Estry 2.4V BK-4MCCE Battery Replacement for WATERPlK Sensonic Plus SR-3000 Sensonic Plus SR-3000E 900 Sonic Toothbrush BK-4MCCE Battery

My expensive high-end WaterPik Electric Toothbrush and WaterPik combo finally stopped working because the rechargeable battery in the Toothbrush was dying rapidly. My husband though the whole product had to be replaced, but I pried open the Toothbrush, found the rechargeable battery pack, looked for it on Amazon, and found the exact one I needed!The company clearly doesn't expect customers to do this replacement, since the battery pack is soldered in place - but if you're handy and can do solder repairs, it's simple and effective. We SAVED a $100+ WaterPik device, for a small fraction of the cost!! ❤️

I had nearly lost heart but decided to just try to remove the plug on the bottom of my 1000 and found that it popped off. Inside was a battery just like this one. I've had the toothbrush for over 12 years now, probably, and it was about time the battery fizzled out...still working but holding no charge to speak of. I replaced it and, lo, my toothbrush is like new again.Takes a soldering iron but, really no biggie to do this.

This absolutely did the trick for the WATERPlK Sensonic we had where it wouldn't complete a brushing cycle or hold a charge. It lasted about 2 years which was not as long as the original lasted. I might try a different replacement but the replacements might be all the same.

I bought this battery as a replacement for the one in my SR-3000 Waterpik toothbrush. After soldering the connections to the net battery, I installed it tin the toothbrush and charged it 24 hours. It worked fine, As is my habit, I put it back in the charger after use and noted by the lights that it had discharged quite a bit. It took a couple of hours to pick up. Same thing after each use. Then, after a couple of days, despite showing fully charged, it went completely dead after only thirty seconds of brushing. The ole battery lasted 14 days on a charge and never quit after one brushing when fully charged. This battery must have developed a memory. Absolutely no good for an electric toothbrush or anything else for that matter.

I bought these as a replacement for the batteries in my Sonicare tooth brush. They work great.

Easy enough to install on my older Waterpik power toothbrush. Works great, just like new. Saved me from having to decide, and spend, on a new replacement brush.

Worked as advertised. Had to solder tab to wires, no problem.

Watched a tube video on how to replace the batteries in our toothbrush. A little soldering and I saved the price of a new unit. Took about 10 minutes.