Originally Posted by
ehartman_49348
It's hard to say how long it will take to charge a specific pack. It depends on the quality of the pack, how well it balances and how full it is when you start charging. Based on some 'charge races' that Johny5 has done, this charger does charge more efficient/faster at the same amperage than other chargers available.
+1 to that! Both channels charge equally as efficient in my experience, given the same charge rate of course. But being a 1/10 racer I never have a need for anything more than 10a and have only charged one 4s pack for a friend. I don't recall the time it took though.