My DS internal clock is freezing

I own this DS lte for about a year. Recently the internal clock just stop. I cant fully enjoy games like animal Crossing or Pokemon. anyone can help?

If it's still in warrenty send it back to get it fixed

the warranty expired months ago

Ravecthe warranty epired months ago

do you know how it happened? and when?

Go into your gamestore to get the battery replaced. Shouldn't cost much.

Replying to #5

is it really the battery? wow, i didnt know the battery affected the time

Replying to #6

the internal battery is needed to keep the clock running.

My bad, I should have stated that it wasn't the main battery.

I took my DS to the store where I bought it, but they said they know nothing about it so there is nothing they can do. Sadly Nintendo is not that famous where I came from. It it was a PSP, it will be another way around. Is it possible for to purchase the internal battery and fix it myself? anway, thanks for the help, deeply apreciate it! :D