I've been using the DCB1112 12amp fast charger for a bit over three years now. Like the 8amp one you show, it has a fan. I should plug it into a power meter. It will charge my 60V 6AH battery in about an hour.
20V MAX*/FLEXVOLT® 12 Amp Fan Cooled Fast Charger
Quickly charge 20V MAX* and 20V/60V MAX* FLEXVOLT® batteries with this 12 Amp Fast Charger. This charger offers a high charge rate that rapidly charges batteries, as well as a two-stage LED state of charge indicator to display when it is fully charged to keep you productive on the job.www.dewalt.com
Yea, I have basically never used my 118...I hate the noise of the fan and I have dozens of batteries, so I rarely need to be charging a battery quickly to keep going.