[suicideneil]

I dont think there is such as thing as a maximum capacity it can handle, its more a case of charge rate; it will take twice as long to charge a 10,000mah pack vs a 5,000mah pack, given the maximum charge rate of 5amps. Seeing as these chargers are limited to 50watts, a 2s 5000mah pack will charge in 1 hour @ 1C charge rate, a 3s 5000mah pack will take 1 1/4 hours, since the charge rate will drop below 1C in order to not excede the charger's power rating ( 63watts required for 1C charge ).