Exell Battery 2.4V Razor Battery Compatible with 800RX, 805RX, 815RX, 815RX/A, 900RX, 950RX, 900, Remington 2B3, 3BF1C, 8BS3-1C, 9BF21C, MK1V, PM 950, SM400, XLR 900, XLR 920 Replaces Razor-3

Performed as expected.

Perfect fit for a Norelco 800RX shaver battery swap out renewal.Pleasant surprise bonus - the battery set already have one end (+ -) joined jumpered so all you have to do is un-solder the old batteries from the printed circuit board (PCB) and then solder two tabs of the new batteries on the + and - terminals on the shaver PCB.Recommend purchasing (via Amazon) a Titan 12710 Tamper Proof Star/Torx Key Set (we bought the two pack) so you can get into the Norelco case. Often personal electronics like shavers and radios have recessed fasteners that are hard to get to with normal tools with fat/large shafts. The Titan key set is reasonably priced and well finished and were instrumental in completing this battery swap out. This tools set can be used with security Torx/star fastener heads or regular non-security head fasteners.

This battery was perfect to resurrect my old Norelco 950RX shaver. The battery package was supposed to include with a small Torx screw driver but none was found. Fortunately I had a long shaft Torx driver that would extract the screws. Once inside it was easy to unsolder the old battery and solder in the new one. Getting the shaver back together was a bit of a challenge but patience and perseverance paid off and the new battery works just like new. Added some new shaver heads (in another review) and this razor shaves better than a fancy Norelco that I bought several years ago.

They fit the old Norelco perfectly and brought it back to life. Not too difficult to solder using a pen-style soldering iron and conical tip. Pay attention to polarity and fold over the soldering tabs when installing.

They work. They take and hold a charge. Only one minor problem is that they are maybe a fourth of a millimeter to big in diameter. Not much of a problem. Just stripped off the covering where it interfered with the plastic housing. Problem solved.

Did not fit the 815RX.

I bought these to replace my Norelco 950RX batteries. Though the listing shows a mini Phillips head screwdriver, that wasn't included. It doesn't really matter because what is needed to remove the four shaver case screws is a Torx T-9 screwdriver which I got at Home Depot. More important is the battery set didn't have positive + sticker. So when I soldered the leads I had a 50-50 chance of getting the correct polarity.

Batteries+ didn't have the battery that fit my Norelco shaver but the clerk gave me the number and told me I could find it on Amazon. I did. When it came I took it to the same gentleman at Batteries+ and he soldered it in. Works great now.