These are Hybrio batteries, which means that they retain their charge for up to a year unlike ordinary rechargeables.
Although at 1600mAh they are not top of the range spec, they are ideal for anything that doesn't have a huge current drain (i.e. things like clocks, remote controls, MP3 players, torches etc)
Better still, with this deal, you are getting them for around half price - which makes this an absolutely cracking deal. And yes, you can recharge them in any battery charger!
With incredible energy retention, these Uniross batteries come pre charged and are ready to use out of the pack. Each battery holds 70% of its charge over 12 months and replaces up to 1000 ordinary Batteries.