I've got a dead battery.

What's the best way to charge it?

What should I NOT do?

 

Ok, it depends on how old the battery is.If your battery is from '02 or older i reccommend replacing it.If you do replace it then you should get a gel cel non-spill battery.They are only about 5 dollars more than a normal battery would be and they last longer and dont die as often.they are around 70 dollars.But if you want to charge it just take your normal car charger and put it on 12 volt charge.DO NOT put it on 55 volt start.It will fry it.Just a 12 volt charge for about 5 min.I had to replace my battery in my 660 because it would not stay charged.I am happy with my gel cell.

 

It's a 2001.

Can I just boost the battery in my quad using the battery in my vehicle?

 

Yes, like faster said by charging it. Your battery is 4 years old though, and you can try charging it but if it just keeps on dieing after that then its probably time for a new battery like he said. And those no spill gel cells would be good for atv's because of all the shaking and getting flipped sometimes and things that happen to your quad.