Better go with Sony Cycle Energy battery and Sony Charger BCG-34HLD4EN, where you can charge both AAA and AA batteries. Also you can opt for 2100 mAh batteries( for toys) as they are sufficient for your toys & also less weight...
Currently seems to be out of stock except in Shopclues not sure if it's reliable place.
Do we get any chargers with indicators like number to indicate how much charge etc?