[epoxy]

charging with the digiQ turned on is also a bad thing,
the software of your tank might get "damaged".

the blinking red charginglight on the controller could mean 3 things:

1. the AA batteries in your controller are drained too low.
2. the internal 1/4AAA tankbatteries are history.
3. some other problem.

does your tank still blink at all when you turn it on ?

best thing is to open up your tank and visually check the batteries.
remove the shrinkwrap from the batterypack to have a good look.
look for any "salty" looking crystals on the batteries or worse,
on the PCB soldering points.

if it all looks normal, you could use a voltmeter to check if the batterypack
still holds and voltage at all.

if you got a "older" non-rotator combatdigiQ you should seriously be thinking about new
batteries. the older start to leak at sometime.
so far i had 6 tanks damaged beyond repair in this way.