I have a hp nc6400 that I put a new battery in.. when you try to run laptop on just battery it wont run but for just a few minutes altho it says fully charged...then when you put ac adpter back in it says 75% charged...

Is it a bad battery ? or maybe the charger? the charger is not oem it is a replacement

Is the battery a HP original and did you charge it completely before use. ?
Also what OS are you running..

no it is a replacement running win 7 pro and i dont know if it was fully charged before use but I am assuming it was...as they just recently tried to run it with just battery...it is a laptop I upgraded for someone...I did go ahead and order a oem charger...

As it's a non-brand and new it may well need a few charge/discharge cycles before the OS registers it correctly..

As it's a non-brand and new it may well need a few charge/discharge cycles before the OS registers it correctly..

Thanks you are always great with the help!

Are you the one that installed the battery ? Did you check the ah rating on them to make sure it was close ?

Are you the one that installed the battery ? Did you check the ah rating on them to make sure it was close ?

I did not instal but i did make sure it was compatible I havent heard from him yet tonight..he did say the last dischrge/charge he got more life out of it..I do believe curly was right..I am hoping anyway