Camcorder Battery Replacements Works Well How Come My Camcorder Won't Work Unless I Hold Down The Battery?

How come my camcorder won't work unless I hold down the battery? - camcorder battery replacements works well

My friend dropped my camera on the carpet and broke the battery. I had a spare battery and not re-start and then I had to keep the battery. The battery in a larger and are still not being pressed. Is there a way to fix the old battery, or keep the new battery without having to press all the time? Thank you. Sony DCR-TRV720 is a replacement battery and Sony NP-F330 InfoLithium battery.