Yes, it's done. Or, the trickle charger that keeps it charged is of poor quality... and is trying to continue charging it even though it's fully charged now.... so it's service life will be shortened.
No.
The old battery was bad it could cause a power surge and plow the main fuse.
Bad battery.
I got shocked by a search protector which didn't feel good even though im 12 years old. I felt a very bad shock but didnt die even though its only like... 10 minutes after i got shocked. TIP: turn off the search protector then plug in the AC adapter or what ever it is... Then turn on the search protector. Could SAVE MANY LIVES! Im doing better after 15 minutes. Be SAFE!!! :D
bad cells usally the water in the battery gets low damaging the cell
You probably have a dirty carburetor causing that surge.
the engine to stall and surge at idle
Yes and No, It depends on what place it is or how bad it is.
That number varies with each type protector. Protectors for one type of surge and that work by absorbing energy are rated in joules. These are typically hundreds or a few thousand joules. Protectors for all types of surges and that work by connecting energy harmlessly to earth are rated in amps. This second type protector is for all types of surges including lightning. Lightning typically can be 20,000 amps. So a minimal 'whole house' protector is 50,000 amps. Obviously that first type protector fails on other and destructive type surges. Since hundreds of joules cannot absorb surges that may be hundreds of thousands of joules (ie due to linemen errors or lightning). Amps is the useful measurement for more robust protectors that address all types of surges.
No, a bad coil will not drain the battery.
bad alternator, bad voltage regulator, bad battery, bad connections.
to sign up for brain surge you should go to yahoo and search "how to get on brain surge" and something should say message board ,click it and then say how bad you want to be on it and hopefully they will add you. Goodluck!!!!