Originally Posted by neospud

If you charge one battery at 20 amps, finishing quicker, you can avoid the whole parallel charge fiasco! Some simple logic to consider: If you parallel charge 2 batteries and don't have 2 more batteries to charge while you're running the first 2, your charger would be sitting there doing nothing. You will run the 2 batteries down, then charge them simultaneously and wait for them to finish.

This is the same as having a single battery and waiting between charges only with longer intervals... I like to charge one fast, and run it while charging a second pack. Gens Ace easily handle 5c charges.

This may not be your scenario. I know you have two 3s and two 2s so you can keep your charger busy no problem. Still charging a single battery means you would need to own fewer batteries as long as you could charge them as fast as you drain them.

If your charger is maxed out, you're not charging your batteries as fast as they will allow which to me reduces my time out running my cars. I have one battery that has a 2c max charge rate and it really throws me off...

Just my 2c...