I haven't ridden my bike in a few weeks so I went to take the battery out and put it on the charger, and I accidentally touched my key into the charging port under the rubber flap and it shorted out the circuit.  When I plug my battery in, the red light doesn't come on, it stays green and stays at 9 bars, where it was when I plugged it in.  Is there any way to reprogram the memory or set point, or is there a fuse to replace?

My wife and I just bought new RR6, when I am going up a steep hill and am shifting down, when I reach my thumb up to the shifter to shift, often the throttle slips in my palm and I suddenly lose my speed and momentum. By the time I shift down and turn the throttle back on my speed is so slow I have to shift down into "2 & 1", and I waste battery getting my speed back up. Also, it's even more hazardous for my wife trying to shift down moving her thumb up to shift, loosening her grip on the handle bars, it's almost impossible for her to shift down. I think that I want to install a Shimano 7 spd Quick Shift under bar mount so I can easily use my thumb, will any Shimano 7 spd Quick Shift work with the existing Shimano Altus 7 spd derailer?