Batteries don't hold a charge!! !

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I have a Duracell charge thing and 4 double AA rechargeable batteries that came with it. I got Christmas 2006 lately on the Wii it seems the batteries don't hold a charge. The battery icon on Wii out of 4 bars said 3 so it said there was a charge but the Lost communication part/and calibrate thing (on Wii Sports Resort) kept popping up) Since I've had the batteries/recharge device since Christmas 2006 do I need new batteries/recharge kit? Thanks.

if they are from 2006, it is a good bet that the batteries need to be replaced. the charger should be fine as long as your local mains are stable [no surges].

Rechargeable batteries do not stay charged over a long period of time. They are great for high drain uses, but they are a little like using a water jug with a slow leak. It is normal for them to lose a charge after a while. Try recharging them again. Give them plenty of time for charging. Some chargers need up to 16 hours for the charge cycle. If that doesn't work, the problem could be the charger. The odds of all of the batteries being bad is near zero.

Rechargeable batteries get weaker and weaker as you use them. They last less and less and then pretty soon they don't hold a charge anymore. You would have to buy new ones.

Replace them, it means they are out of power and use, it's happened to me before after I tried to attempt recharging my batteries and putting them in my camera and nothing's happened.

Also if you use the device frequently, you are most likely to bump into these issues.... I'm afraid you will need to buy yourself a new one.
Definitely get yourself new rechargeable batteries, it will save you money on buying them.

The rechargeable battery in my old laptop computer went from being able to run the computer on battery mode for 2 hours down to keeping it going for around 20 seconds! The battery was about 8 years old though.

Unfortunately this will happen whether you use them or not

I dread to think that years from now, I won't be able to enjoy my Game Boy Micro or my original fat DS without plugging it into the wall =/

My Game Boy Color (and I guess my original non-lit GBA) will still take AAs just fine

It also depends on the number of charge/discharge cycles you put them through, and whether you allow the battery to fully charge and discharge each time. Repeated charge/discharge, or charging when they are not fully discharged, will shorten their life. Finicky things, so they are.

Heat isn't good for them either, I think.

Charging when not fully discharged was bad for the overall life of the older technology Nickel Cadmium (Ni-Cd) batteries. These days, most rechargeable batteries (AA or AAA) are Nickel Metal Hydride (Ni-Mh). Ni-Mh batteries do not have this problem, but rather benefit from frequent charging. Giving them a full charge once you start the charge cycle is a good idea, though. There is a lot of good info at Wikipedia on this subject.

When I said that the batteries were probably not the problem, I should have said they were probably not the problem if you haven't charged them very many times. Usually they are good for somewhere between 500 to 1000 charge cycles.

Oh, I didn't realise that, thanks.