I just got this charger about 2 weeks ago and it's way faster than my old i4 at least with 2 battery's with 4 it's about the same. I have noticed one concerning issue though it heats up way more than my old i4 I was wondering if anyone else has this charger and has noticed this as well. I know the manual says it's ok for it to heat up the actual batteries aren't hot just the charger other than that I think it's a great charger especially since it has the Imr recovery mode