some have indicated they place their batteries on a charger once or twice a year to "condition" them.
the other day I ran the car battery down. I jumped the car and all is fine with the world.
just for giggles I thought I would try putting a charger on it.
How long does one leave the battery on the charger?
btw... I am finding out "maintaince free" batteries require maintaince...

 

Best way to bring up a battery is with a trickle charger. A slow charge over 24hr period works pretty good.

MikeyB