How long should i be charging these batteries?

[Conrad11]

Hi there,

How long should i charge 1000mAh rechargable batteries for with a charger which has this spec:

Input:
9V 550mAh

Output:
2.4X1 (-...) 1000mA
2.4X2 (-...) 500mA

Thanks

EDIT:

I will be charging 2 batteries at once.

 

[Conrad11]

Ok guys, cheers for the advice. 2Hours it'll be then.

I am not sure whether my charger has one of these delta peaks tings, but it does have an lcd screens which shows me how much its charged and when its charged and the speed etc.....but i am under the impression that it doesnt work very well (the batteries dont last that long), im hoping it automatically stops charging when full

 

[Conrad11]

Its a generic one: Just says Super Charger on the back with the model number: kn-990a:

This one here: http://www.laptopbattery.net.nz/images/box.jpg