I can’t turn on my 3DS

I bought it 2 years ago but haven’t used it for a year and last 2 days I used it again. At first , my 3ds was out of battery so i charged it but for the first hour it wouldnt turn the orange light on and after awhile the orange light turned on and could be used. But yesterday I remembered that I just used my 3ds for like an hour(The battery also lost just a little) and then turned it off but at night I couldn’t turn it on again. Therefore I have to charge it and the same problem happened ( the first hour it didnt turn on any lights but when it fully charges I can turn it on). And today it’s the same issue, I turn on my 3ds it wont work and now I’m charging it again.