I wrote about these before and it looks they are on sale again. We have had ours for a month or so and everything is working great. I have replaced the batteries in the smoke detectors, remote controls and my computer mouse with these rechargeables and could not be happier about the fact that I no longer have to buy/throw away regular batteries.
Any, if you are interested, the package contains 20 AA batteries and a compact travel charger. Not as good as a deal as I got, but for $19.99 and free shipping(not an affiliate link), it’s hard to go wrong.