I just bought new rechargeable batteries, and got only a few shots. Why so little usage from new batteries? Is something wrong?

Rechargeable battery is most likely shot. Replace with new one, charge it again and should work fine

Buy the best quality batteries, but NOT the highest mAhr ones. They are designed for long usage for low drain applicaions but may not be able to deliver the high currents required by digital cameras. 2100-2400mAh is said to be best. Also, use a good quality charger that can discharge and slow recharge to reconditionbatteries. I recently bought a Maha charger and some Imedion batteries. Now my camera works as it should. (previously it lost the auto-focus after a few shots). A bit expensive but cheaper than a new camera!

Some time battery connector a camera get oxidize please check it if it is clean it hope your problem will solve

I have the same problem too. It's just started happening. The camera is about 3 years old. I've cleaned the battery contact points with an eraser and ensured there's contact. All seems fine. I only get about 5 shots out of brand new AA batteries, then a black screen with message 'change the batteries'. Can anyone help?

I use the adapter plugged in all day long, it will not do any damage to your battery. You can leave it plugged in a work as long as you want. Just make sure you get the lithium ion battery as that is the latest..in fact I would get it off of the Acer home page if possible. As for as how long a battery last, depends on the usage and how many times you recharge it. Lithium are good for over 1000 recharges so again depends on your usage. Its the recharge that wears it down. Hope this helps. Pls rate this solution.

i suggest replacing a fresh battery will most likely solve your prob, overtime rechargeable battery can drain easily, try changing with a new battery and see if it does work well, there might be insufficient current, thats why it tends to drop of voltage easily upon using, 
there is a specified lifetime for rechargeable battery, depends on your usage and charging method, theymaybe fully charged but sometimes wont give you enough power to drive 
cheers

Alkaline batteries are a No-No Rechargeable Ni Cads are little better The Best are NiMh Rechargables in the AA cell range or Li-on in the specialist range. Always get for the best.

totally discharge the batteries [by putting them in a torch to tun them right down] the rechagre them fully, If this does not improvethings = the repair djop but be warned it can be pricey - almost new camera time perhaps.

You might want to try NON rechargeable batteries, particularly "digitally" rated alkalines. If this won't do it, I'd take it to get looked at.

Have you tried a different charger?