Charging a Battery Using 240V Instead of 110V

Hi Guys

I have bought a remote control car from over in America and the battery is charged using a 110V 60Hz adapter and the output is DC 9.6V 250mA. I live in new Zealand which is 240V and 50Hz incoming supply.

I have another 240V adapter that has the same connection which is 250V 50Hz and the output is 11.5V and 180mA. Can I use that to charge the battery? I believe i should only be worried about having a higher ampere or is that incorrect?

If thats incorrect i have another adapter that i could convert that is 240V 50Hz with a 9V output but is 350mA.