I've a digital camera that takes hours to charge the battery, is it normal?

Depending on how long you've had the battery and how many times you've charged it, that will affect the charging and life of the battery.

When the battery is charged on a regular basis, or isn't allowed to discharge before charging it will damage the internal components of the battery.

If you want to try and speed up the charging of your battery do what you can to run it all the way down, then let it sit for a while. Pop it on the charger, and let it charge, run it down again. Charge it again and the battery should be "refreshed."

Its good to do with anything that has a rechargeable batteries. It will make the battery last longer (time wise, and life wise). I do this with my laptop battery over the weekend when not using it.

Hope this helped.

it can take from 2 to 4 hours to charge a camera battery.

yes that is normal, specially if your battery has higher capacity. also, try not to charge in cold environments because the chemicals in the battery will take longer due to the cold temperature.

buy an extra battery. keep it charged so you don't have any down time.

how old are the batteries? if they are a few yrs old and you use it alot they might be done for.
is it a kodak? the docks will discharge the battery dead before they recharge.
also overnight type chargers will give a better , long lasting charge that these new quick chargers (15min,30min,1hr)