If You Want Identical Function, But Only Pay Less Than Half The Price, Then ...,
This review is from: Duracell Mobile Charger With 2AA And 2AAA Pre Charged Rechargeable Nimh Batteries, CEF23DX4N (Electronics)
... You should consider the Australian version (Duracell Mobile Charger with 4 AA Rechargeable NiMH Batteries, CEF23AU) of this charger.
There are three virtues in this Duracell charger:
1. It can charge any AA and AAA combination of batteries, unlike inferior chargers that must charge in pairs.
2. This is a smart charger that will stop charging once the correct voltage has been reached, thus preventing over-charging.
3. Because of the built-in USB port, it can also become a charger of small electronics such as MP3 players, digital cameras, cellphones, etc.
CEF23DX4N is the U.S. version which comes with 2 AA and 2 AAA rechargeable batteries. It costs $39.99. Its plug is foldable, but even in the retracted position, it still protrudes considerably from the base of the charger unit to make placing it evenly on a flat surface not possible. The U.S. version also comes with a car adapter cable.
CEF23AU is the Australian version which comes with 4 AA rechargeable batteries. It costs $18.89. The capacity of each AA battery is 2000 mAh.
The difference is in the shape of the plug, but a small converter is included with CEF23AU, so you can plug it into any 120V U.S. wall socket.
The U.S. version is less bulky than the Australian version with the converter attached, but I bought the Australian version because of its less than half of the U.S. version price.
In both country versions, the electrical plug base is detachable to make the whole unit more manageable when used as a USB charger.
Because of the substantial charger plug protrusion, I'd suggest plugging it in a wall socket (where the two plug blades are vertically oriented), rather than a horizontal power strip, so that the plug will stay in place while the batteries are being charged.