Hello people, im new to RC helicopter and also new to this forum. So definitely i need help on some things.

I just bought a Japan Version VI Ligting Force NO 6263 indoor/outdoor rc heli. The battery which comes with the heli has a description of KAN Ni -MH 8.4V, 7x2/3AAA 400mAh.

I charged the battery for almost 12 hours but i can onli fly my heli for around 5-10 mins. why is this so? can anybody help?

sounds about right, i'd be surprised if you go more than 10 minutes on a nimh battery