I don't think my original battery is quite up to snuff. I only get about 4 minutes flying time. Charging doesn't seem to take too long and am wondering if the charger is working properly.
I notice that when plugging in a depleted battery all 4 LED's flash briefly (so I know all the LED's are working). But during the charging cycle LED # 1 comes on periodically (maybe once a minute, briefly), and OCCASIONALLY the #2 LED flashes briefly (but very rare), and I don't think I've ever seen the #3 LED flash.
It makes me think of poor connections inside the pack. Maybe #3 cell is not charging, or perhaps not discharging when flying (i.e. remaining charged and that's why I don't see #3 LED flash during charge cycle). I will try to check the cells after the next flight (discharged batteries) with a voltmeter.
I kind of assume the black lead would be common (negative), and the Red, Blue, Yellow will be the + for each separate cell. I also assume that the 3 cells should read the same (or very similar voltages). Can anyone confirm?
Sorry about my 3 posts in my short time as a newcomer. As I gain expereince, any useful info I obtainn will shared with all. Thinking about getting a generic battery + charger but don't want to start throwing gobs of money at this project just now.