If a charger was using a simple full wave bridge rectifier design (such as: **broken link removed**). How could you modify it to have an LED indicator about the charge status of the battery? My original thinking was to run an LED in series with the load (rechargeable battery), but that was based on thinking that the battery would eventually stop taking a charge and no current would flow through that node anymore...so the LED would shut off. I've decided that probably wouldn't work though. Can someone help me with this?