I ordered these batteries because they are of a type that I use and I had no spares. As it happens, the motherboard battery on my PC (which I had been using for about 5 years) was found to have failed and I replaced it with one of these today. Although they are of a good make and price with a good delivery time, it may be another 5 years or more before I can complete this review on the first one. Alas, I have no idea when I will be using the other three of them.