And as an electronics designer I can write it can go either way depending on the design decision by the maker.
You removed the possibility of a direct yes or no by not supplying make and model number.
My laptop came with 6-cell battery and 65watt charger. Now I want to purchase other 9-cell battery. Do I need a 95watt charger to charge it or my old 65watt charger will work with 9-cell battery?