15 minutes to christmas.. WooHoo.. Just wish insomnia wasn't always with me.. I'm gonna have to meet santa at the door.
anyway, that beep, beep sounds like the charger is reading a reverse polarity somewhere. Take some pliers of some kind, or your wire cutters, and grab on to each individual battery bar and give it a wiggle. Keep in mind you don't want to "short" the pack by having the plyer touch another bar. You just giving the solder joint a good test to see if one may be a cold joint not allowing power through.
I've never had this happen but are the batteries old and possibly one has gone completely reversed/dead?
Associated FT B4.1; SC10; T4
All tekin RS 17.5; RSPro 10.5; RS 13.5
All Savox 1258TG's (power caps on rx's)
DX3R w/ SR3100's & Gens Ace Batteries
Now, to be able to drive, priceless