I was looking at getting a Polaron EX charger, which has 4 separate chargers built in, and wiring it like this:
Basically, divide the pack into module groups of 3. Then have a switch where I can engage/disengage the chargers and the battery pack. This way I can have isolated chargers and I can also get them balanced.
Is there a speed advantage to charging 3 packs at a time?