Kastar Battery Replacement for Electric Shaver Battery BT-2AA, Philip Norelco 138-10334 13810334 4822-138-10334, 138-10673 13810673 4822-138-10673, 138-10727 13810727 4822-138-10727, SHB1 SHB2 DLC5112

Battery fit in the shaver fine. The solder tabs lined up with the circuit board. I have run the battery through several recharge and discharge cycles and has worked fine. Battery last about 40-45 min. in one continuous running.

Replaced batteries on an older chaver and now it works like new

Works as expected. Although unfortunately the shavers are made to solder in the batteries, I was able not to have to solder them in. I was able to leave a tab of metal in the shaver from the old batteries by breaking the old tab off close to the old batteries and bending the left over metal into a spring like tab with which the new batteries labs can be bent to have contact with. I've done this with two Norelco shavers with good results.

I replaced the original battery with this product a few months ago.The original battery had worked for more than 10 years. But this battery started to have problems after a couple of charges. Now it's totally dead (after 5-6 charges).Never buy this product.Either the one I bought is a defect or it's a fake.The quality of this product is totally unacceptable.

The batteries worked great for about 8 months and now they are dead. I expected more life out of them then that, but then again, they weren't that expensive. So I give them a 3 stars.

As long as you know how to solder, these batteries will give your shaver an extended life. I replaced the batteries twice before the motor started to drop substantially in performance and the blades got noticeably dull.

Replaced the factory battery in my nearly 10 year old Norelco 6885XL that just wouldn't hold a charge anymore. It was a great shaver and I hated to replace it, so I figured I'd try to repair it. With this battery pack and a set of replacement heads, it's like a brand new shaver!Yes, there is some shaver disassembly and desoldering/soldering involved. In my 6885XL, there were some small plastic retaining pieces that you have to carefully remove and replace. As far as the soldering, it wasn't a big deal for me as I solder regularly, but for those inexperienced or less equipped for soldering (a desolder pump or wick is a must to do the job easily), I see how it might be awkward or challenging. If your shaver is like mine, you need to desolder and unbend the tab ends from the *bottom* of the circuit board, then just pull the tabs completely out with the old battery. Replace with the new battery and insert tabs (check polarity!) into holes, bend them over, and solder again on the back of the circuit board.

I have no issue with the battery; I would have liked to have known before hand that the installation was a bit tricky. Do not expect a quick fix; you don't just change out these batteries like any old AA or AAA. You have to remove the old ones and solder in the new ones. So if you don't own a soldering iron and don't feel inspired to learn a new skill, I would suggest buying a new shaver all together.