Okay another stupid question??? I have just brought tx and rx shrinkwrapped battery packs for my radio. I also purchased a charger which has a hitec plug which plugs straight into the hitec plug on the rx batterys and a jack which plugs into the side of my transmitter and charges the tx batterys.
There are two red lights to indicate that the batterys are charging but what I want to know is how will I now when the batterys are fully charged. I thought the light might change to green but I have had them on charge for four hours now and the light is still red. Or am I being a tad hasty perhaps and need to wait longer before they are fully charged.

Thanks,

Troy.