Quote Originally Posted by EricJRW View Post
Basically, at what point is a battery tender a good idea?
If you use your motorcycle regularly, you do not need to use any charger. Only if the drain current is such that your breaks between rides drains the battery to say 12.6 V would you need a battery maintainer.

I use one during winter storage.

I use a CTEK 3300 which has an AGM/cold weather mode as well.