Kastar 2-Pack 1.2V Ni-MH AAA 1000mAh Rechargeable Battery w/Tabs Compatible with Electric Razors Toothbrushe High power Static Applications (Telecoms UPS and Smart grid) Electric Moped Waterpik

Used these to replace the batteries in my waterpick toothbrush.1. Use a quarter to open the bottom of the toothbrush.2. Remove the head of the toothbrush.3. Push the metal shaft into the toothbrush. All electronics will come out the bottom in 1 piece when you do this.4. Pull the old batteries out but don’t pull too hard because the will remain attached by two wires.5. Use your soldering iron to remove the wires from the top of the batteries. You need to remove the heat shrink to get to the wires.6. Remove as much of the tabs on the new batteries as you can. On one battery remove both tabs. On the other battery remove 1 tab. I was able to remove 1 with the soldering iron. The other two I just pulled off and chunks were left. Not a problem.7. With some rough grit sandpaper sand the three ends of the batteries that don’t have a tab. You can see the ends go from shinny to a dull color. Also sand the inside of the tab that is left.8. Dip the end of your soldier in some flux and dab a little on one end that does not have the tab. Heat up the surface of the battery where you put the flux and add a little solder to the end of the battery. Do this on all three open ends and inside the remaining tab.9. Put the two batteries together with the tab touching both batteries. Make sure you are attaching the tab to the opposite polarity on the second battery. I put the two batteries side by side in a vice.10. Use your iron to hold the tab down on the second battery. Once you see the solder liquify remove the iron. I used a dental pick to hold the tab in place while I did this.11. At this point I wrapped cheap Kapton tape around the two batteries to keep them together.12. Solder the two wires from the toothbrush to the opposite end of the battery pack. Make sure the black wire is to the negative end and red to the positive.13. I then wrapped the batteries longways with Kapton covering the ends.14. Put the batteries in the electronics of the toothbrush.15. Put the electronics back in the housing. Pay attention to where the lights are supposed to be to help align everything.18. Put the bottom back in.17. Put the brush head back on.These batteries are 1000mha compared to the 750mha that were removed so they will probably take a little longer to charge but should also last a little longer before needing a recharge.

As expected. Charged Very Fast.

I bought these batteries to replace the ones in my 2-year-old Remington PF7200. The original batteries were getting tired. I replaced the original 600 mAh batteries with these 1000 mAh batteries. It's like night and day the performance of the shaver. Tons of power now. Probably better than when the shaver was new. So the batteries work great. I would say however that it's not easy to remove/replace the batteries. It requires some experience with soldering and a good soldering setup. But $42 for a new shaver vs. $9 for new batteries is a great deal. I also replace the foil cutters every 6 months so there's no need to buy a new shaver.

purchased this battery to replace one in a rechargeable shaver that would no longer hold a full charge. after replacing battery and charging, the shaver WAS worse than it was with the old battery that barely held a charge. Upon further inspection I noticed the solder had separated from on of the battery leads. Additional heat and flux solved the problem, the shaver is now working. The battery leads appear to be stainless and it is difficult to get solder to properly adhere.

Soldered into my sonic toothbrush, perfect

I bought these to replace the batteries in my Waterpik SR-3000 tooth brush. They have large tabs, that if overheated, can short the cells. For a second tooth brush repair I purchased the Kastar AAAX2 2.4V MSM 1000mAh Ni-MH Rechargeable Battery. These are the same batteries wrapped in thin plastic just like the batteries being replaced with red & black wire leads that are much easier to work with. just cut the wires to length, and slide on some 3/32" or 1/16" dia. heat shrink and solder the wires. Better yet they are priced lower.

I used these to replace the factory rechargeable batteries in my Braun trimmer. Easy to install if you have basic soldering skills. So far, I haven't had to charge my trimmer in about three weeks. I use it every couple days to neaten and trim my mustache and beard. They are holding up very well since the initial charge. Great deal. For about nine dollars and a little bit of my time I saved having to buy a new trimmer. Hopefully, the batteries will hold up for a couple years. At the moment, I'm very happy with them.

These batteries gave my Braun 5514 electric razor new life, with approximately 33% more capacity (the original batteries were rated at 750 mAH). The original batteries pretty much died and would not hold a charge more than a few moments (not minutes). Following a couple of different links to instructions how to take the razor apart and replace the batteries, I was successful. Now the razor hums like it did when it was brand new. So far, I have charged the unit twice, and the razor just has been humming away, holding its charge for quite a while between charges (I have yet to keep time). Bottom line, I'm happy with these batteries so far. If they last more than a few years, I will be happy!