I really can't answer on that specific phone, sorry, but in my experience, from new, batteries require a long charge, I seem to recall 12 hours or so, but subsequent charges are a lot less.
That said, I haven't got a new one for maybe a couple of years.
If yours is yaking seemingly too long, it could be that you have a dodgy battery supplied. This happened to me once, and it took ages to realise it was nothing I was doing (or not doing)
all it says in the manual is how to insert the sim card & battery (as if nobody will know) & only use the phone when it is fully charged. It does not actually give a length of time to follow. I just thought somebody might know...