Fuel gauge will not show more than half

I Have a 2004 Quest and just replaced the battery the other day. Now the Fuel gauge will not show more than 1/2 a tank. At first it was showing completely empty, then moved up to 1/4. I knew there was more than that, so I filled it up. After I filled the tank the gauge still only shows half.
Any ideas?
Thank you in advance.

it works again
The other day my wife hit a large bump anf the guage started to work again.
Fuel Gauge
I had this happen to my 2k4 Nissan Titan. They will have to replace the float in the gas tank.
Do you know if it was
Do you know if it was related to changing the battery or just a coincidence?
Fuel Gauge
On our Titan, it just went. There was no relation to battery change and I suspect it is just coincidence in your case.